taxonID	type	description	language	source
03AA4D09FFF1FF91ECACFA1F1BADF02D.taxon	type_taxon	Type genus. Odius Liljeborg, 1865.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF1FF91ECACFA1F1BADF02D.taxon	diagnosis	Diagnosis [emended from Ariyama (2011)]. Body compressed laterally. Rostrum well developed. Pereonites dorsally flush, usually raised into thin keels. Pleonites often with dorsal projections. Antennae short, accessory flagellum present or absent. Mouth parts conically developed. Upper lip narrow, tip asymmetrically incised. Mandible styliform; incisor toothed, accessory blades strong or absent, molar triturative; palp 3 - articulated, article 1 shorter than half length of article 3. Lower lip without inner lobes, outer lobes thin. Maxilla 1 with small inner plate bearing 1 – 3 apical setae; outer plate conical; palp 1 - or 2 - articulated. Maxilla 2 with inner plate lacking facial row of setae. Maxilliped, palp 3 - or 4 - articulated. Gnathopod 1 weak, chelate, carpus and propodus elongate. Gnathopod 2 subchelate, merus and carpus produced posterodistally. Coxa 4 with large acute posterior projection. Pereopods 5 – 7 with bases expanded posteriorly. Urosomites free. Uropods biramous, both rami of uropod 1 subequal in length, outer rami shorter than inner in uropods 2, 3. Telson entire or incised. Genera included. Antarctodius Berge, Vader & Coleman, 1999; Cryptodius Moore, 1992; Gordonodius Ariyama, 2011; Metodius gen. nov.; Odius Liljeborg, 1865; and Postodius Hirayama, 1983.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF2FF91ECACFC631FD7F452.taxon	vernacular_names	[Japanese name: Kawari-subeyokoebi-zoku, new]	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF2FF91ECACFC631FD7F452.taxon	type_taxon	Type species. Metodius cyanomaculatus sp. nov.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF2FF91ECACFC631FD7F452.taxon	diagnosis	Diagnosis. Body, anterodorsal corner of pereonite 1 slightly produced; dorsal projections of pereonites 1 – 5 absent, those of pereonite 6, 7 and pleonites absent or present; posterolateral margin of pleonite 3 with acute, upwardly directed projection at midpoint. Eyes longish reniform. Antenna 1, peduncular article 2 shorter than article 1; accessory flagellum 1 - articulated; primary flagellum with many aesthetascs in male. Upper lip, tip incised asymmetrically. Mandible slender; incisor wide, fan-shaped; lacinia mobilis present on left side, also fan-shaped; accessory blades developed; molar pear-shaped; palp long, slightly distal to molar. Lower lip, outer lobes not notched inside, tips projected. Maxilla 1 short; inner plate small, bearing 1 – 3 apical setae; outer plate acutely projected apically, with many robust setae on mediodistal margin; palp 1 - articulated, short, tip rounded, without setae. Maxilla 2, inner plate shorter than outer plate, mediodistal margins of both plates strongly setose. Maxilliped, inner plate setose; outer plate short, not reaching distal end of palp article 2; palp 4 - articulated, article 2 medial margin slightly expanded, article 4 long triangular. Coxa 1 relatively small, coxae 2 – 4 progressively wider and longer; inner surfaces of coxae 2 – 4 each with “ holder structure ” (its triangular process holding anterior coxa together with coxal plate). Gills present on gnathopod 2 – pereopod 6. Oostegites of female present on gnathopod 2 – pereopod 5. Gnathopod 1, propodus projected posterodistally, projection with short robust seta; dactylus small. Gnathopod 2, propodus large, ca. 0.9 – 1.0 times of coxal length, palm weakly oblique, defined by small projection, margin minutely serrated. Pereopods 3, 4 slender, 5 – 7 stout; meri projected distally, projections not reaching distal end of carpi, dactyli each with nail. Uropods, inner ramus of uropod 3 relatively wide; peduncles of uropods 1, 2 and both rami bearing many robust setae. Telson minutely cleft or entire, lateral margins each with pair of penicillate setae.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF2FF91ECACFC631FD7F452.taxon	etymology	Etymology. From the Greek met (= beyond) and Odius (type genus of the family).	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF2FF91ECACFC631FD7F452.taxon	discussion	Remarks. Metodius gen. nov. differs from the other odiid genera in the short maxilla 1 palp with rounded bare tip and the large gnathopod 2 propodus almost the same length as the coxa 2.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF2FF91ECACFC631FD7F452.taxon	distribution	Distribution. Japan only.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF3FF9BECACFF7E1CEAF525.taxon	vernacular_names	[Japanese name: Rurihoshi-subeyokoebi, new]	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF3FF9BECACFF7E1CEAF525.taxon	description	(Figs 2 – 6)	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF3FF9BECACFF7E1CEAF525.taxon	materials_examined	Type material. Holotype: ovigerous female, 5.0 mm (OMNH-Ar- 12230), Nodahama Beach, Izu-ōshima Island (Ōshima Town), Tokyo Prefecture, 34 ° 47 ′ 49 ′′ N, 139 ° 21 ′ 31 ′′ E, 12 m depth, using SCUBA, 24 March 2015, coll. O. Hoshino. Paratypes: male, 3.5 mm (OMNH-Ar- 12231), same locality, 10 m depth, using SCUBA, 4 April 2015, coll. O. Hoshino; male, 2.8 mm (OMNH-Ar- 12232), same locality, 10 m depth, using SCUBA, sandy bottom, 23 December 2015, coll. O. Hoshino. Type locality. Nodahama Beach, Izu-ōshima Island, Tokyo Prefecture in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF3FF9BECACFF7E1CEAF525.taxon	etymology	Etymology. From the Greek cyano (= dark blue) + the Latin maculatus (= maculate), referring to the body coloration.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF3FF9BECACFF7E1CEAF525.taxon	description	Description of female. Based on holotype, ovigerous female, 5.0 mm (OMNH-Ar- 12230). Body (Fig. 2), pereonites and pleonites lacking dorsal projection. Head (Figs 2, 3). Lateral cephalic lobe acutely projected anteroventrally. Eyes large, 8.3 % length of body. Antenna 1 stout; length ratio of peduncular articles 1 – 3 1: 0.65: 0.3; accessory flagellum slender, tip with 1 plumose and 2 simple setae; primary flagellum with 7 articles, article 1 elongate, each article with several aesthetascs. Antenna 2 also stout, almost same length as antenna 1, with ratio of lengths of peduncular articles 3 – 5 1: 1.7: 1.5; flagellum with 5 articles, article 1 long. Mandible, incisor wide, distal margin with 9 – 10 denticles; left lacinia mobilis bearing 10 denticles; accessory blades 13 in number; palp long, length ratio of palp articles 1 – 3 1: 3.55: 2.65, article 3 with numerous fine setae on anterior margin and lateral surface and 3 thick setae on tip. Maxilla 1, inner plate ovoid, with 3 setae on tip; medial margin of outer plate bearing 4 large and ca. 20 small robust setae, dorsal surface covered with many fine setae, palp very short. Maxilliped, inner plate slightly projected mediodistally, bearing 8 plumose setae; outer plate rounded, mediodistal margin minutely serrated, distal margin with several thick setae; laterodistal corners of palp articles 1, 2 each bearing a few robust setae, article 3 setose mediodistally, article 4 slender, about half length of article 3. Pereon (Fig. 4). Gnathopod 1 small; coxa narrow; basis slightly widened proximally, anterior and posterior margins without plumose setae; posterodistal projection of propodus with 1 robust, 1 plumose and several short setae; dactylus slightly exceeding tip of robust setae on propodus, bearing small robust seta and several short setae. Gnathopod 2 far larger than gnathopod 1; coxa with blunt projection and plumose seta on posterior margin, inner surface with tiny process; basis without plumose setae on anterior and posterior margins, posterodistal corner weakly projected, bearing robust seta; ischium also projected posterodistally; merus with 3 and 3 robust setae on posterior margin and at posterodistal corner, respectively; carpus projected posterodistally, tip with 4 robust setae medially; propodus long and wide, ca. 0.9 times length of coxa, anterodistal corner projected and excavated, palm slightly rounded, with many serrations, posterodistal corner and posterior margin with 9 and 2 robust setae, respectively; dactylus slender, tip narrowed, slightly exceeding posterodistal corner of propodus. Pereopod 3 longer than gnathopod 2; coxa with blunt projection and plumose seta posteriorly, inner surface with small triangular process; basis with 14 plumose setae on anterior margin and 5 small robust setae on posterior margin, posterodistal corner bearing 6 robust setae; ischium with 2 small robust setae on posterior margin; merus bearing 2 anterior, 3 anterodistal, 4 posterolateral, 5 posteromedial and 2 posterodistal robust setae; carpus with 4 anterodistal, 2 posterolateral, 4 posteromedial and 5 posterodistal robust setae; propodus with 6 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 4 longer than pereopod 3; coxa wide, inner surface with large triangular process; basis with 4 plumose and many short setae on anterior margin and 7 robust setae on posterolateral margin, posterodistal corner bearing 6 robust setae; ischium with 3 posterolateral and 2 posteromedial robust setae; merus with 1 anterior, 3 anterodistal, 2 posterolateral, 7 posteromedial and 2 posterodistal robust setae; carpus with 3 anterodistal, 4 posterolateral, 4 posteromedial and 5 posterodistal robust setae; propodus with 1 single and 5 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 5 slightly longer than pereopod 4; coxa lobate, anteroventral margin with 6 plumose setae on inner surface; basis produced posterodistally, posterior margin weakly convex, anteroproximal margin with 1 plumose and 1 robust setae, anterolateral surface and anterodistal corner bearing 9 and 2 robust setae, respectively; ischium with 4 robust setae on anterior margin; merus with 6 anterolateral, 2 anteromedial, 2 anterodistal, 1 posterior and 1 posterodistal robust setae; carpus with 4 anterolateral, 3 anteromedial and 3 anterodistal robust setae; propodus with 1 single and 6 couples of robust setae anteriorly; dactylus with plumose seta. Pereopod 6 slightly longer than pereopod 5; coxa lobate, anterior margin with 10 plumose setae; basis produced posterodistally, posterior margin weakly convex, anterolateral surface with many robust setae, anterodistal corner bearing 3 robust setae; ischium with 4 anterior robust setae; merus with 5 anterolateral, 2 anteromedial, 2 anterodistal and 2 posterior robust setae; carpus with 2 anterolateral, 4 anteromedial and 4 anterodistal robust setae; propodus with 7 couples of robust setae anteriorly; dactylus with plumose seta. Pereopod 7 a little longer than pereopod 6; coxa small, unlobed, anterior margin with ca. 20 plumose setae; basis wide, produced posterodistally, posterior margin strongly convex, anterior part with 8 marginal, 5 lateral and 2 distal robust setae, inner surface bearing many plumose setae; ischium with 3 anterior and 1 medial robust setae; merus bearing 3 anterior, 4 anteromedial, 2 anterodistal, 2 posterior and 1 posterodistal robust setae; carpus with 3 anterolateral, 3 anteromedial and 4 anterodistal robust setae; propodus with 1 single and 6 couples of robust setae anteriorly; dactylus with plumose seta. Pleon (Fig. 5). Pleopods, pleopod 3 shortest; peduncles each with many plumose setae laterally and 2 coupling hooks mediodistally, peduncle of pleopod 3 also bearing 4 robust and 5 simple setae mediodistally; outer rami longer than inner, outer and inner rami with 17, 18, 16 and 15, 16, 15 articles, respectively. Uropod 1 long; peduncle bearing 15 lateral, 1 laterodistal, 4 medial and 1 mediodistal robust setae; outer ramus with 12 lateral, 7 medial and 4 terminal robust setae, inner ramus with 6 lateral, 8 medial and 4 terminal robust setae. Uropod 2 short, ca. 0.7 times length of uropod 1; peduncle bearing 7 lateral, 1 laterodistal and 1 mediodistal robust setae; outer ramus ca. 3 / 4 times length of inner ramus, with 6 lateral, 2 medial and 3 terminal robust setae, inner ramus with 5 lateral, 5 medial and 3 terminal robust setae. Uropod 3 almost same length as uropod 2; peduncle with laterodistal robust seta; outer ramus ca. 0.6 times length of inner ramus, with 5 lateral and 3 medial robust setae and terminal short seta, inner ramus with 6 lateral and 7 medial robust setae and terminal short seta. Telson long triangular, tip minutely incised, with short seta. Description of male [based on paratype, 3.5 mm (OMNH-Ar- 12231)]. Eyes larger than those of female. Antenna 1 (Fig. 5 M-A 1), primary flagellum stouter than that of female, with 8 articles, each bearing numerous aesthetascs. Gnathopod 2 (Fig. 5 M-G 2) subequal to that of female except for oostegite, but propodus more slender. Pereopod 7 (Fig. 5 M-P 7), coxa anterior margin with 8 plumose setae; basis more slender than that of female, with 7 anterior, 5 anterolateral and 2 anterodistal robust setae, inner surface lacking plumose setae. Coloration in life [based on paratype, male, 2.8 mm (OMNH-Ar- 12232); Fig. 6]. Head white, eyes red. Body and coxae brown, with ca. 15 bright blue spots and several white spots, dorsal margin of body framed in red. Antennae white and partly bright red. Pereopods 5 – 7 except coxae white.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF3FF9BECACFF7E1CEAF525.taxon	biology_ecology	Habitat. Found on sandy bottom, 10 – 12 m depth.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF3FF9BECACFF7E1CEAF525.taxon	distribution	Distribution. Only Izu-ōshima Island in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	vernacular_names	[Japanese name: Shirahoshi-subeyokoebi, new]	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	description	(Figs 7 – 11)	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	materials_examined	Type material. Holotype: ovigerous female, 7.1 mm (OMNH-Ar- 12233), off Jōgashima Island, Miura City, Kanagawa Prefecture, 35 ° 08 ′ 25 ′′ N, 139 ° 32 ′ 30 ′′ E, 147 – 250 m depth, using dredge, 12 February 2015, coll. H. Kohtsuka. Paratypes: ovigerous female, 8.6 mm (OMNH-Ar- 12234), same locality, 35 ° 08 ′ 18 ′′ N, 139 ° 34 ′ 41 ′′ E, 86.8 – 87.7 m depth, sandy bottom, using dredge, 29 July 2014, coll. H. Kohtsuka; ovigerous female, 6.8 mm (OMNH-Ar- 12235), same locality, 35 ° 08 ′ 16 ′′ N, 139 ° 33 ′ 28 ′′ E, 100 – 103 m depth, using dredge, 20 January 2015, coll. H. Kohtsuka; male, 7.0 mm (OMNH-Ar- 12236), same locality, 35 ° 08 ′ 22 ′′ N, 139 ° 33 ′ 41 ′′ E, 95.2 – 95.9 m depth, gravel and sand bottom, using dredge, 5 November 2015, coll. H. Kohtsuka. Type locality. Off Jōgashima Island, Miura City, Kanagawa Prefecture in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	etymology	Etymology. From the Greek leuco (= white) + the Latin maculatus (= maculate), referring to the body coloration.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	description	Description of female. Based on holotype, ovigerous female, 7.1 mm (OMNH-Ar- 12233). Body (Fig. 7), pereonites 6, 7 with small and medium dorsal projections, respectively; pleonites 1 – 3 each with dorsal projection. Head (Figs 7, 8). Lateral cephalic lobe projected anteroventrally. Eyes large, 9.9 % length of body. Antenna 1 somewhat slender; length ratio of peduncular articles 1 – 3 1: 0.55: 0.25; accessory flagellum minute, tip with 1 thick and 1 simple setae; primary flagellum with 8 articles, article 1 elongate, each article with several aesthetascs. Antenna 2 slender, almost same length as antenna 1, with ratio of lengths of peduncular articles 3 – 5 1: 1.85: 1.4; flagellum with 10 articles, article 1 long. Mandible, incisor wide, distal margin with 9 – 11 denticles; left lacinia mobilis bearing 10 denticles; accessory blades 14 in number; palp long, length ratio of palp articles 1 – 3 in right 1: 4.1: 4.0, with numerous fine setae on anterior margin and lateral surface and 3 thick setae on tip. Maxilla 1, inner plate oval, with single seta on tip; medial margin of outer plate bearing 6 large and ca. 30 small robust setae and many simple setae, dorsal and ventral surfaces covered with fine setae, palp very short. Maxilliped, inner plate slightly projected mediodistally, with many plumose setae distally and medially; outer plate rounded, mediodistal margin distinctly serrated, distal margin setose; laterodistal corners of palp articles 1, 2 each bearing single robust seta, article 3 setose mediodistally, article 4 slender, ca. 0.6 times length of article 3. Pereon (Fig. 9). Gnathopod 1 small; coxa narrow; basis slightly narrowed distally, anterior margin with single plumose seta proximally, posterior margin lacking plumose seta; posterodistal projection of propodus with 1 robust, 1 plumose and several short setae; dactylus far exceeding tip of robust setae on propodus, bearing small robust seta, plumose seta and several short setae. Gnathopod 2 greatly larger than gnathopod 1; coxa with blunt projection on posterior margin, inner surface with tiny process; basis without plumose setae on anterior and posterior margins, posterodistal corner weakly projected, bearing 3 robust setae; ischium slightly projected posterodistally; merus with 2 robust setae at posterodistal corner; carpus projected posterodistally, posterior margin with 5 robust setae; propodus long and wide, almost same length as coxa, anterodistal corner projected and excavated, palm slightly rounded, with numerous denticles, posterodistal corner and posterior margin with single large and 7 small robust setae, respectively; dactylus slender, slightly exceeding posterodistal corner of propodus. Pereopod 3 a little shorter than gnathopod 2; coxa with blunt projection and plumose seta posteriorly, inner surface with small triangular process; basis without plumose setae, but with 9 and 4 robust setae on posterior margin and at posterodistal corner, respectively; ischium with 2 small robust setae on posteromedial surface; merus bearing 1 anterodistal and 1 posterodistal robust setae; carpus with 2 anterodistal and 4 posterodistal robust setae, posterior margin with 1 single and 3 couples of robust setae; propodus with 8 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 4 almost same length as pereopod 3; coxa wide, inner surface with large triangular process; basis without plumose setae, but with 10 and 4 robust setae on posterior margin and at posterodistal corner, respectively; ischium with posteromedial robust seta; merus with 1 anterodistal, 2 posterolateral, 2 posteromedial and 3 posterodistal robust setae; carpus with 3 anterodistal, 4 posterolateral, 5 posteromedial and 3 posterodistal robust setae; propodus with 8 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 5 slightly shorter than pereopod 4; coxa lobate, anteroventral margin with 6 inner and marginal simple setae; basis produced posterodistally, posterior margin distinctly convex distally, anterior part with 8 lateral, 3 medial and 2 distal robust setae; ischium with 3 robust setae on anterior margin; merus with 5 anterolateral, 1 anterodistal, 1 posterior and 1 posterodistal robust setae; carpus with 5 anterolateral, 5 anteromedial and 2 anterodistal robust setae; propodus with 1 single and 7 couples of robust setae anteriorly; dactylus with plumose seta. Pereopod 6 slightly longer than pereopod 5; coxa lobate, anterior margin with many plumose setae and strange-shaped thick seta; basis produced posterodistally, posterior margin distinctly convex distally, anterolateral surface with several proximal simple setae and 5 robust setae, anterior margin bearing 10 robust setae, anterodistal corner with 2 robust setae; ischium with 3 anterior robust setae; merus bearing 5 anterior, 1 anteromedial, 2 anterodistal, 2 posterior and 1 posterodistal robust setae; carpus with 6 couples of robust setae anteriorly; propodus with 8 couples of robust setae anteriorly; dactylus with plumose seta. Pereopod 7 a little shorter than pereopod 6; coxa small, unlobed, anterior margin with 13 plumose setae; basis wide, produced posterodistally, distal end of posterior margin strongly convex, anterior part with 12 marginal, 3 lateral and 2 distal robust setae, inner surface bearing many plumose setae; ischium with 3 anterior and 1 anteromedial robust setae; merus bearing 5 anterior, 2 anteromedial, 2 anterodistal and 1 posterior robust setae; carpus with 5 couples of robust setae anteriorly; propodus bearing 8 couples of robust setae anteriorly; dactylus with plumose seta. Pleon (Fig. 10). Pleopods, pleopod 3 shortest; peduncles each with many plumose setae laterally and 2 coupling hooks mediodistally, peduncle of pleopod 3 also bearing 5 robust and 3 simple setae medially and 6 plumose setae posteriorly; outer rami longer than inner, outer and inner rami with 18, 20, 19 and 18, 16, 17 articles, respectively. Uropod 1 long; peduncle bearing 5 lateral, 1 laterodistal, 10 medial and 1 mediodistal robust setae [lost in part; with 11 lateral, 1 laterodistal, 10 medial and 1 mediodistal robust setae in paratype, ovigerous female, 6.8 mm (OMNH-Ar- 12235)]; outer ramus with 8 lateral, 8 medial and 3 terminal robust setae, inner ramus with 6 lateral, 9 medial and 3 terminal robust setae. Uropod 2 short, ca. 3 / 4 times length of uropod 1; peduncle bearing 7 lateral and 1 laterodistal robust setae; outer ramus ca. 0.8 times length of inner ramus, with 7 lateral, 2 medial and 3 terminal robust setae, inner ramus with 6 lateral, 8 medial and 3 terminal robust setae. Uropod 3 almost same length as uropod 2; peduncle with 2 lateral and 1 laterodistal robust setae; outer ramus ca. 0.6 times length of inner ramus, with 5 lateral and 3 medial robust setae, inner ramus with 6 lateral and 8 medial robust setae and terminal short seta. Telson long triangular, tip acutely projected, not incised. Description of male [based on paratype, 7.0 mm (OMNH-Ar- 12236)]. Eyes larger than those of female. Antenna 1 (Fig. 10 M-RA 1), peduncular article 3 shorter than that of female; primary flagellum with 10 articles, each bearing many aesthetascs. Gnathopod 2 (Fig. 10 M-RG 2) subequal to that of female except for oostegite. Pereopod 7 (Fig. 10 M-RP 7), coxa anterior margin with 10 plumose setae; basis shorter than that of female, with 9 anterior, 4 anterolateral and 2 anterodistal robust setae, inner surface bearing only 2 plumose setae. Coloration in life [based on holotype, ovigerous female, 7.1 mm (OMNH-Ar- 12233); Fig. 11]. Eyes red. Body and coxae dark olive green, with ca. 20 white spots, middorsal margin of each pereonites and pleonites red surrounded by white, middle part of pereonite 4 and dorsal part of coxa 4 yellowish white (probably due to reflection of light). Gnathopod 2 white. Pereopods 3 – 7 except coxae and urosomite light olive green.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	discussion	Remarks. Metodius leucomaculatus sp. nov. differs from M. cyanomaculatus sp. nov. in the larger size, the dorsal projections on the pereonite 7 and pleonites, the distinct serration on the maxilliped outer plate, the longer dactylus of the gnathopod 1, the more slender bases of the pereopods, and the coloration.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	biology_ecology	Habitat. Found on gravel and sand bottom, 86 – 250 m depth.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFF8FF9DECACF99D1DB5F589.taxon	distribution	Distribution. Only off Jōgashima Island, Miura City in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFEFF9CECACF90C1FD7F028.taxon	type_taxon	Type species. Postodius imperfectus Hirayama, 1983. Diagnosis [emended from Ariyama (2011)]. Body, anterodorsal corner of pereonite 1 strongly produced; dorsal projections of pereonites 1 – 6 absent, on pleonites present, but small; posterolateral margin of pleonite 3 with acute, upwardly directed projection at midpoint. Eyes reniform. Antenna 1, peduncular article 2 shorter than article 1; accessory flagellum 1 - articulated; primary flagellum with many aesthetascs in male. Upper lip, tip incised asymmetrically. Mandible slender; incisor narrow; lacinia mobilis present on left side, slender; accessory blades weak; palp long, at same level as molar. Lower lip, outer lobes long, weakly notched inside. Maxilla 1, inner plate small, bearing 1 – 2 apical setae; outer plate styliform, with several robust setae on tip; palp 1 - articulated, slender, tip with long apical seta. Maxilla 2, inner plate shorter than outer plate, mediodistal margins of both plates strongly setose. Maxilliped, inner plate slender, with 2 – 3 robust setae on tip; outer plate long, exceeding distal end of palp article 2; palp 4 - articulated, article 2 medial margin weakly expanded, article 4 vestigial. Coxae 1 – 4 progressively wider, equally long; inner surfaces of coxae 2 – 4 each with “ holder structure ”. Gills present on gnathopod 2 – pereopod 6. Oostegites of female present on gnathopod 2 – pereopod 5. Gnathopod 1, propodus projected posterodistally, projection with short robust seta; dactylus small, triangular. Gnathopod 2, propodus not large, ca. 0.35 – 0.6 times of coxal length, palm transverse, distal margin serrated, with 2 – 3 robust setae on posterodistal corner. Pereopods 3 – 7 stout, meri projected distally, projections of pereopods 5 – 7 exceeding distal end of carpi, dactyli each with nail. Uropods, inner ramus of uropod 3 relatively wide; peduncles of uropods 1, 2 and both rami bearing many robust setae. Telson minutely cleft, lateral margins each with pair of penicillate setae. Species included. Postodius albifacies sp. nov.; P. igneus Ariyama, 2011; P. imperfectus Hirayama, 1983; P. ornatus Ariyama, 2011; P. sanguineus sp. nov.; and P. striatus Ariyama, 2011.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFEFF9CECACF90C1FD7F028.taxon	distribution	Distribution. Japan only.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	vernacular_names	[Japanese name: Shirogao-subeyokoebi, new]	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	description	(Figs 12 – 16)	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	materials_examined	Type material. Holotype: female with juveniles, 4.1 mm (OMNH-Ar- 12237), Ōsezaki, Numazu City, Shizuoka Prefecture, 35 ° 01 ′ 36 ′′ N, 138 ° 47 ′ 05 ′′ E, 20 m depth, rocky reef with soft corals, using SCUBA, 9 April 2015, coll. Y. Kawahara. Paratypes: ovigerous female, 3.8 mm (OMNH-Ar- 12238); ovigerous female, 2.7 mm (OMNH-Ar- 12239); male, 2.4 mm (OMNH-Ar- 12240), same data as holotype. Type locality. Ōsezaki, Numazu City, Shizuoka Prefecture in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	etymology	Etymology. From the Latin albi (= white) + facies (= face), referring to the head coloration.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	description	Description of female. Based on holotype, female with juveniles, 4.1 mm (OMNH-Ar- 12237). Body (Fig. 12), pereonite 7 and pleonites 1 – 3 each with small dorsal projection. Head (Figs 12, 13). Lateral cephalic lobe projected anteroventrally. Eyes 6.8 % length of body. Antenna 1 stout; length ratio of peduncular articles 1 – 3 1: 0.65: 0.4; accessory flagellum minute, tip with 3 setae; primary flagellum with 5 articles, article 1 elongate, each article with several aesthetascs. Antenna 2 also stout, slightly shorter than antenna 1, with ratio of lengths of peduncular articles 3 – 5 1: 2.2: 1.65; flagellum with 5 articles, article 1 long. Mandible, incisor narrow, dorsal margin with 13 – 14 denticles; left lacinia mobilis slender, bearing 5 denticles; accessory blades slender, 11 in number; anterior margin distal to palp expanded; palp long, length ratio of palp articles 1 – 3 1: 4.75: 3.9, article 3 with numerous fine setae on lateral surface and 3 thick setae on tip. Maxilla 1, inner plate pearshaped, with 2 setae on tip; medial margin of outer plate bearing 7 large and ca. 20 small robust setae and many slender setae, palp with long apical seta and many short marginal setae. Maxilliped, inner plate distal margin bearing 3 robust setae; outer plate long, exceeding distal end of palp article 4; palp short, articles 2, 3 setose mediodistally, article 4 short, about 0.15 times length of article 3. Pereon (Fig. 14). Gnathopod 1 small; coxa narrowed distally; basis slightly widened proximally, anterior margin with single plumose seta and many short setae, posterior margin bearing a few short setae; posterodistal projection of propodus with 1 robust, 2 plumose and several short setae; dactylus bearing 2 needle-shaped and 3 plumose setae. Gnathopod 2 larger than gnathopod 1; coxa with blunt projection on posterior margin, inner surface with tiny process; basis with 3 plumose and many short setae on anterior margin, posterior margin bare, posterodistal corner bearing 1 robust and 2 slender setae; ischium with long robust seta at posterodistal corner; merus slightly projected posterodistally, with 5 and 2 robust setae on posterior margin and at posterodistal corner, respectively; carpus produced posterodistally, with 10 robust setae; propodus wide, ca. 0.45 times length of coxa, anterodistal corner slightly projected, palm straight, with many serrations, posterodistal corner with 2 robust setae; dactylus stout, with nail, tip not reaching posterodistal corner of propodus. Pereopod 3 far longer than gnathopod 2; coxa with blunt projection posteriorly, inner surface with small triangular process; basis with 17 plumose setae on anterior margin and 6 small robust setae on posterior margin, posterodistal corner bearing 6 robust setae; ischium with 2 small robust setae on posterior margin, posterodistal corner bearing 2 robust setae; merus with 6 anterior, 2 anterodistal, 4 posterior, 4 posterolateral, 2 posteromedial and 1 posterodistal robust setae; carpus with 3 posterolateral, 3 posteromedial and 6 posterodistal robust setae; propodus with 5 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 4 longer than pereopod 3; coxa wide, inner surface with very large triangular process; basis with> 20 plumose and many short setae on anterior margin and 7 robust setae on posterolateral margin, posterodistal corner bearing 6 robust setae; ischium with 11 posterior, 5 posterolateral and 2 posteromedial robust setae; merus with 5 anterior, 1 anterodistal, 3 posterior, 8 posterolateral, 10 posteromedial and 3 posterodistal robust setae; carpus with 1 anterodistal, 1 posterior, 2 posterolateral, 5 posteromedial and 6 posterodistal robust setae; propodus with 1 single and 5 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 5 almost same length as pereopod 4; coxa lobate, anteroventral margin with> 10 plumose setae on inner surface; basis produced posterodistally, posterior margin smooth, anterior margin with ca. 15 plumose and 8 robust setae, anterodistal corner bearing 3 robust setae; ischium with 10 robust setae on anterior margin; merus with 8 anterior, 9 anteromedial, 2 anterodistal, 7 posterior and 1 posterodistal robust setae; carpus with 2 anterior, 6 anteromedial and 5 anterodistal robust setae; propodus with 1 single and 4 couples of robust setae posteriorly. Pereopod 6 slightly shorter than pereopod 5; coxa lobate, anterior margin with> 20 plumose setae; basis produced posterodistally, posterior margin smooth, anterior margin with 6 plumose setae and ca. 10 short robust setae, anterolateral surface with several short robust setae, anterodistal corner bearing 2 robust setae; ischium with 7 anterior robust setae; merus with 6 anterior, 8 anteromedial, 2 anterodistal, 7 posterior and 1 posterodistal robust setae; carpus with 1 anterior, 1 anterolateral, 4 anteromedial and 5 anterodistal robust setae; propodus with 1 single and 5 couples of robust setae anteriorly; dactylus with plumose seta. Pereopod 7 a little longer than pereopod 6; coxa small, unlobed, anterior margin with ca. 15 plumose setae; basis wide, produced posterodistally, posterior margin weakly convex, anterior margin with 11 plumose setae and 8 short robust setae, anterolateral surface with several short robust setae, anterodistal corner bearing 3 robust setae, inner surface with many plumose setae; ischium with 5 anterior and 7 anteromedial robust setae; merus with 5 anterior, 9 anteromedial, 3 anterodistal, 8 posterior and 1 posterodistal robust setae; carpus with 1 anterior, 3 anteromedial and 6 anterodistal robust setae; propodus bearing 1 single and 4 couples of robust setae anteriorly; dactylus with plumose seta. Pleon (Fig. 15). Pleopods, pleopod 3 shortest; peduncles each with many plumose setae laterally and several plumose setae and 2 coupling hooks medially; outer rami longer than inner, outer and inner rami with 18, 18, 16 and 17, 16, 14 articles, respectively. Uropod 1 long; peduncle bearing 29 lateral, 1 laterodistal and 9 medial robust setae; outer ramus with 13 lateral, 6 medial and 3 terminal robust setae, inner ramus with 7 lateral, 9 medial and 3 terminal robust setae. Uropod 2 short, ca. 3 / 4 times length of uropod 1; peduncle bearing 10 lateral, 1 laterodistal and 2 medial robust setae; outer ramus ca. 3 / 4 times length of inner ramus, with 8 lateral, 1 medial and 3 terminal robust setae, inner ramus with 6 lateral, 6 medial and 3 terminal robust setae. Uropod 3 slightly shorter than uropod 2; peduncle with 1 lateral and 1 laterodistal robust setae; outer ramus ca. 0.6 times length of inner ramus, with 5 lateral and 1 medial robust setae and terminal short seta, inner ramus with 8 lateral and 7 medial robust setae and terminal short seta. Telson roundish long-triangular, tip with minute excavation. Description of male [based on paratype, 2.4 mm (OMNH-Ar- 12240)]. Antenna 1 (Fig. 15 M-A 1), accessory flagellum longer than that of female; primary flagellum with 6 articles, article 1 very long, each articles bearing many aesthetascs. Gnathopod 2 (Fig. 15 M-G 2) subequal to that of female except for oostegite, but basis without plumose setae and propodus more slender. Pereopod 3, basis with 3 plumose setae on anterior margin. Pereopod 7 (Fig. 15 M-P 7), coxa anterior margin with 4 plumose setae; basis anterior margin with single plumose seta and 6 robust setae, inner surface lacking plumose setae. Uropod 1, peduncle with 12 lateral, 1 laterodistal and 4 medial robust setae. Coloration in life (based on female, size unknown; Fig. 16). Head white, eyes light red. Body and coxae light orange, with 11 violet curved lines, middle dorsal margin of each pereonites and pleonites red. Antennae white and partly red. Pereopods 3 – 7 also light orange.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	discussion	Remarks. Postodius albifacies sp. nov. can be distinguished from the other Postodius species by the coloration and the combination of the shapes of gnathopod 2 and pereopods 3, 7 (see the above key). The uropod 1 peduncle with many lateral and medial robust setae is probably distinctive, although those in the females of four species are not shown in Ariyama (2011).	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	biology_ecology	Habitat. Found on rocky reef with soft corals, 20 m depth.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFFFFF82ECACFABB1D21F485.taxon	distribution	Distribution. Only Ōsezaki, Numazu City in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	vernacular_names	[Japanese name: Chigoke-subeyokoebi, new]	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	description	(Figs 17 – 22)	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	materials_examined	Type material. Holotype: ovigerous female, 3.4 mm (OMNH-Ar- 12241), Mihonoseki, Matsue City, Shimane Prefecture, 35 ° 33 ′ 25 ′′ N, 133 ° 16 ′ 55 ′′ E, 0.1 – 0.5 m depth, on a bryozoan Watersipora sp., 30 May 2020, coll. S. Morihisa. Paratypes: ovigerous female, 2.9 mm (OMNH-Ar- 12242); male, 2.0 mm (OMNH-Ar- 12243); male, 1.7 mm (OMNH-Ar- 12244), same data as holotype. Type locality. Mihonoseki, Matsue City, Shimane Prefecture in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	etymology	Etymology. From the Latin sanguineus (= blood-red), referring to the body coloration.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	description	Description of female. Based on holotype, ovigerous female, 3.4 mm (OMNH-Ar- 12241). Body (Fig. 17), pleonites 1 and 2 each with indistinct posterodorsal projection, pleonite 3 with blunt projection at mid-length. Head (Figs 17, 18). Lateral cephalic lobe projected anteroventrally. Eyes 7.3 % length of body. Antenna 1 stout; length ratio of peduncular articles 1 – 3 1: 0.7: 0.45; accessory flagellum minute, tip with 2 setae; primary flagellum with 6 articles, article 1 elongate, each article with several aesthetascs. Antenna 2 also stout, shorter than antenna 1, with ratio of lengths of peduncular articles 3 – 5 1: 1.5: 1.2; flagellum with 6 articles, article 1 long. Mandible, incisor narrow, dorsal margin with 13 – 14 denticles; left lacinia mobilis slender, bearing 12 denticles; accessory blades slender, 14 – 15 in number; anterior margin distal to palp slightly expanded; palp long, length ratio of palp articles 1 – 3 in left 1: 2.35: 2.6, article 3 with numerous fine setae on anterior margin and lateral surface and 3 thick setae on tip. Maxilla 1, inner plate longish pear-shaped, with single seta on tip; medial margin of outer plate bearing 8 robust setae and many fine setae, palp with 1 long and 2 minute setae on tip. Maxilliped, inner plate distal margin bearing 2 minute robust setae; outer plate long, exceeding distal end of palp article 4; palp short, articles 2 and 3 setose mediodistally, article 4 short, ca. 0.15 times length of article 3. Pereon (Fig. 19). Gnathopod 1 small; coxa narrowed distally; basis widened proximally, anterior margin with single simple seta, posterior margin bare; posterodistal projection of propodus with 1 robust, 1 plumose and 2 short setae; dactylus bearing 3 needle-shaped and 2 plumose setae. Gnathopod 2 larger than gnathopod 1; coxa with blunt projection on posterior margin, process on inner surface indistinct; basis with single anterior and 2 + 2 posterior plumose setae; ischium with robust seta at posterodistal corner; merus projected posterodistally, with 4 and 5 robust setae on posterior margin and at posterodistal corner, respectively; carpus produced posterodistally, with 7 robust setae; propodus wide, ca. 0.45 times length of coxa, palm almost straight, with many serrations, posterodistal corner and medial surface with 3 and 4 robust setae, respectively; dactylus stout, with nail, tip not reaching posterodistal corner of propodus. Pereopod 3 far longer than gnathopod 2; coxa with blunt projection posteriorly, inner surface with small triangular process; basis with 4 anterior and 6 posterior plumose setae, posterodistal corner bearing 2 plumose, 1 robust and 3 short setae; ischium with 3 robust setae on posterior margin; merus bearing 4 anterior, 1 anterodistal, 2 posterior, 3 posterolateral, 1 posteromedial and 1 posterodistal robust setae; carpus with 1 posterolateral, 1 posteromedial and 3 posterodistal robust setae; propodus with 4 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 4 slightly longer than pereopod 3; coxa wide, inner surface with very large triangular process; basis with 13 anterior and 6 posterior plumose setae, posterodistal corner bearing 3 plumose, 3 robust and 1 short setae; ischium with 3 posterior robust setae; merus with 3 anterior, 1 anterodistal, 3 posterior and 3 posteromedial robust setae; carpus with 1 posterior and 3 posterodistal robust setae; propodus with 1 single and 4 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 5 shorter than pereopod 4; coxa lobate, anteroventral margin with 3 inner and 1 marginal plumose setae; basis produced posterodistally, posterior margin smooth, anterior margin with 6 plumose setae, anterodistal corner bearing robust seta; ischium with 4 robust setae on anterior margin; merus with 6 anterior, 2 anterolateral, 1 anteromedial, 3 posterior and 1 posterodistal robust setae; carpus with 1 anterolateral, 1 anteromedial and 5 anterodistal robust setae; propodus with 4 couples of robust setae posteriorly; dactylus with plumose seta. Pereopod 6 slightly longer than pereopod 5; coxa lobate, anterior margin with 6 plumose setae; basis produced posterodistally, posterior margin weakly convex, anterior margin with 2 + 1 plumose setae and 4 robust setae, anterodistal corner bearing 2 robust setae; ischium with 4 anterior robust setae; merus with 5 anterior, 2 anteromedial, 4 posterior and 1 posterodistal robust setae; carpus with 1 anterior, 2 anteromedial and 4 anterodistal robust setae; propodus with 2 single and 2 couples of robust setae anteriorly; dactylus with plumose seta. Pereopod 7 a little shorter than pereopod 6; coxa small, unlobed, anterior margin with 10 plumose setae; basis wide, produced posterodistally, posterior margin moderately convex, anterior margin with single plumose seta and 5 short robust setae, anteromedial surface with several short robust setae, anterodistal corner bearing 2 robust setae; ischium with 3 anterior robust setae; merus with 3 anterior, 2 anteromedial, 2 anterodistal and 4 posterior robust setae; carpus with 1 anterolateral, 3 anteromedial and 4 anterodistal robust setae; propodus with 2 single and 2 couples of robust setae anteriorly; dactylus with plumose seta. Pleon (Fig. 20). Pleopods, pleopod 3 shortest; peduncles each with many plumose setae laterally and 2 coupling hooks mediodistally; outer rami longer than inner, outer rami with 13, 13, 12 articles, respectively, inner rami with 11 articles. Uropod 1 long; peduncle bearing 10 lateral, 1 laterodistal and 4 medial robust setae; outer ramus with 7 lateral, 2 medial and 3 terminal robust setae, inner ramus with 3 lateral, 5 medial and 3 terminal robust setae. Uropod 2 short, ca. 0.7 times length of uropod 1; peduncle bearing 5 lateral, 1 laterodistal and 1 medial robust setae; outer ramus ca. 3 / 4 times length of inner ramus, with 4 lateral and 3 terminal robust setae, inner ramus with 3 lateral, 3 medial and 3 terminal robust setae. Uropod 3 shorter than uropod 2; peduncle with 1 lateral and 1 laterodistal robust setae; outer ramus ca. 0.6 times length of inner ramus, with 3 lateral robust setae and terminal short seta, inner ramus with 5 lateral and 4 medial robust setae and terminal short seta. Telson long-triangular, tip with 2 minute excavations. Description of male [based on paratype, 2.0 mm (OMNH-Ar- 12243)]. Eyes larger than those of female. Antenna 1 (Fig. 20 M-A 1) stouter than that of female; accessory flagellum longer; primary flagellum with 5 articles, article 1 very long, each articles bearing many aesthetascs. Gnathopod 2 (Fig. 20 M-G 2) subequal to that of female except for oostegite, but coxa inner surface with small triangular process, basis lacking plumose setae and propodus more slender. Pereopod 3, basis without plumose setae. Pereopod 7 (Fig. 20 M-RP 7), coxa with single plumose seta on anterior margin; basis roundish, anterior margin without plumose seta. Uropod 1, peduncle with 5 lateral, 1 laterodistal and 2 medial robust setae. Coloration in life [based on holotype, ovigerous female, 3.4 mm (OMNH-Ar- 12241) and paratype, male, 1.7 mm (OMNH-Ar- 12244)]. Female (Fig. 21). Eyes dark red. Body and coxae light blood-red, with ambiguous white spots, dorsal margin white and light blood-red. Antennae white and partly red. Pereopods 3 – 7 except coxae and urosome light orange. Male (Fig. 22). Eyes dark red. Body and coxae dark blood-red, with ambiguous white spots, dorsal margin white and dark blood-red. Antennae dark blood-red and partly dark red. Pereopods 3 – 7 except coxae and urosome light to pale orange.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	discussion	Remarks. Postodius sanguineus sp. nov. is characterized by the wider propodus of the gnathopod 2 in both sexes. The plumose setae on the bases posterior margins of the female gnathopod 2 and pereopods 3, 4 are probably unique in the genus, whereas Ariyama (2011) did not describe the female setation. In addition, the body coloration of P. sanguineus is distinctive in the genus.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	biology_ecology	Habitat. Found on a bryozoan Watersipora sp., 0.1 – 0.5 m depth.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFE5FF88ECACFBBE1D1EF7B1.taxon	distribution	Distribution. Only Mihonoseki, Matsue City in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFEBFF8FECACFB141D06F299.taxon	vernacular_names	[Japanese name: Mukashi-subeyokoebi-zoku]	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFEBFF8FECACFB141D06F299.taxon	type_taxon	Type species. Odius antarcticus Watling & Holman, 1981.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFEBFF8FECACFB141D06F299.taxon	diagnosis	Diagnosis [emended from Ariyama (2011)]. Body, anterodorsal margin of pereonite 1 not produced; dorsal projections of pereonites absent, those of pleonites present or absent; posterolateral margin of pleonite 3 with or without projection. Eyes variable. Antenna 1, peduncle with article 2 shorter than article 1; accessory flagellum absent or present. Upper lip, tip incised asymmetrically. Mandible conical; incisor narrow; lacinia mobilis present on left side; palp somewhat distal to molar. Lower lip with outer lobes long, strongly notched inside. Maxilla 1 with inner plate bearing 3 apical plumose setae; outer plate relatively short, styliform, with many robust setae on tip; palp 2 - articulated, wide, exceeding outer plate, with several apical setae. Maxilla 2, inner plate almost same length as outer plate, mediodistal margins of both plates strongly setose. Maxilliped, inner plate narrow; outer plate medium, reaching distal end of palp article 2; palp 4 - articulated, article 2 not expanded medially, article 4 short or long. Coxa 1 a little shorter than coxa 2; coxae 2 – 4 progressively wider, equally long. Gills present on gnathopod 2 – pereopod 7 (?). Oostegites of female present on gnathopod 2 – pereopod 5. Gnathopod 1, propodus not projected posterodistally, posterodistal corner with long robust seta; dactylus small, triangular, with several plumose setae. Gnathopod 2, propodus narrow, palm weakly transverse, distal margin serrated; dactylus with accessory spine. Pereopods 3 – 7, meri projected distally. Uropods, inner ramus of uropod 3 slightly wide; peduncles of uropods 1, 2 and both rami bearing many robust setae. Telson cleft or entire.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFEBFF8FECACFB141D06F299.taxon	discussion	Remarks. The diagnosis of the genus is emended mainly because the presence of the accessory flagellum and the gill on the coxa 7 is confirmed in the present study. However, in the papers dealing with the other Antarctodius species, the accessory flagellum is stated to be absent and the gill is not mentioned (Watling & Holman 1981, Coleman & Kauffeldt 2001, Labay 2010). A closer examination of them is needed.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFEBFF8FECACFB141D06F299.taxon	distribution	Distribution. Antarctic Ocean, Okhotsk Sea and Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFECFF8DECACFE3C1F05F0FD.taxon	vernacular_names	[Japanese name: Mukashi-subeyokoebi]	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFECFF8DECACFE3C1F05F0FD.taxon	description	(Figs 23, 24)	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFECFF8DECACFE3C1F05F0FD.taxon	materials_examined	Material examined. Female, 3.2 mm (OMNH-Ar- 12245), off Jōgashima Island, Miura City, Kanagawa Prefecture, 35 ° 07 ′ 14 ′′ N, 139 ° 34 ′ 24 ′′ E, 91 - 95 m depth, sandy bottom, using dredge, 17 June 2013, coll. H. Kohtsuka. Material for comparison. Holotype: male, 2.9 mm (1.7 mm in a straight line) (NSMT-Cr- 21285), midway between Kuchinotsu and Ohyano, Ariake Sound, 32 ° 34 ′ N, 130 ° 15 ′ E, 47 m depth, sandy gravel bottom, using Smith-McIntyre grab, 5 June 1997, coll. M. Azuma.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFECFF8DECACFE3C1F05F0FD.taxon	description	Description of female. Based on female, 3.2 mm (OMNH-Ar- 12245). Body (Fig. 23), pleonites 1 – 3 each lacking dorsal projection, pleonite 3 with small projection posteroventrally. Head (Figs 23, 24). Lateral cephalic lobe projected anteroventrally. Eyes 9.3 % length of body. Antenna 1 stout; length ratio of peduncular articles 1 – 3 1: 0.8: 0.35; accessory flagellum present, minute, tip with 1 seta; primary flagellum with 6 articles, article 1 not elongate, each article with a few aesthetascs. Maxilla 1 small; inner plate longish pear-shaped, with 3 plumose setae on tip; medial margin of outer plate bearing 8 robust setae and many thick and fine setae, palp 2 - articulated, tip heavily setose. Maxilliped, inner plate distal margin bearing 3 robust setae; outer plate truncate, slightly exceeding distal end of palp article 2, laterodistal corner with 7 robust setae; palp articles 2 and 3 setose mediodistally, article 4 long triangular, about 0.7 times length of article 3. Pereon and pleon (Fig. 24). Gnathopod 1 slender; coxa narrow; basis slightly widened proximally, anterior margin with several short setae, posterior margin bearing 6 long setae; posterodistal corner of propodus with long robust seta and 3 short setae; dactylus complexly trifurcated, exceeding tip of robust seta of propodus, bearing 2 plumose and 1 short setae. Gnathopod 2 larger than gnathopod 1; coxa almost straight, inner surface with tiny process; basis with single short seta on anterior margin; merus truncate distally, posterodistal corner with 2 robust setae; carpus produced posterodistally, with 2 anterodistal, 2 lateral, 3 posterior and 8 posterodistal robust setae; propodus short, with 2 anterior, 2 anterodistal, 5 lateral and 5 medial robust setae, palm slightly curved, with many serrations; dactylus short, posterior margin with small spine. Pereopod 7, coxa small, unlobed, anterodistal margin with 3 short setae, gill present; basis wide, produced posterodistally, posterior margin slightly concave, anterior margin with 8 plumose and 12 robust setae, anterolateral surface and anterodistal corner bearing 5 and 1 robust setae, respectively, inner surface with many plumose (?) setae; ischium with 1 anterior and 1 anterodistal robust setae; merus with 2 anterior, 7 anteromedial, 2 anterodistal, 4 posterior and 1 posterodistal robust setae; carpus – dactylus lost. Telson deeply cleft, both tips each with minute seta. Description of male [based on holotype, male, 2.9 mm (1.7 mm in a straight line) (NSMT-Cr- 21285)]. Antenna 1 with large accessary flagellum, tip with 2 setae (Fig. 24 M-AF). Pereopod 7, coxa with damaged fragment of gill. Both overlooked in Ariyama (2011). Coloration in life. Unknown.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFECFF8DECACFE3C1F05F0FD.taxon	discussion	Remarks. Ariyama (2011) described this species based on a single male specimen. The present female specimen, however, can be identified as Antarctodius japonicus, because most characters including important ones are shared with the holotype (ex. maxilla 1, maxilliped, gnathopods and telson), although there are some trifle differences.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFECFF8DECACFE3C1F05F0FD.taxon	biology_ecology	Habitat. Found on sandy gravel bottom and sandy bottom, 47 – 95 m depth.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
03AA4D09FFECFF8DECACFE3C1F05F0FD.taxon	distribution	Distribution. Ariake Sound in Kyūshū (Ariyama 2011) and off Jōgashima Island, Miura City (present study), both in Japan.	en	Ariyama, Hiroyuki (2021): Five species of the family Odiidae (Crustacea: Amphipoda) collected from Japan with descriptions of a new genus and four new species. Zootaxa 5067 (4): 485-516, DOI: https://doi.org/10.11646/zootaxa.5067.4.2
