taxonID	type	description	language	source
FD0939C193A752B5ADF3B39DCE60C59B.taxon	materials_examined	Material examined. Four specimens dissected, valves preserved in one cardboard cell slide (SMF 57049 - 57052). Seventy-five specimens undissected, stored in one vial filled with 80 % ethanol. All specimens were collected from the sampling station SO 250 _ 9 of KuramBio II expedition (RV Sonne, 250 th Expedition), trawled from 43 ° 48.43 ' N, 151 ° 44.35 ' E, 5134 m to 43 ° 47.64 ' N 151 ° 44.51 ' E, 5101 m by AGT on 19 th August, 2016.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
FD0939C193A752B5ADF3B39DCE60C59B.taxon	distribution	Distribution. This species has been found from the abyssal plain of Northwestern Pacific, ranging from 39 ° 43.47 ʹN, 147 ° 10.11 ʹE, 5229 m to 39 ° 42.54 ʹN, 147 ° 9.51 ʹE, 5217 m (Karanovic and Brandao 2015). This study is the second record of Keysercythere enricoi, and it is collected from sunken natural wood pieces on deep-sea in the same way as previous report (Karanovic and Brandao 2015). Because we found this species approximately 600 km to the southwest from the type locality, it must be widely distributed in this area, and its distribution can be associated with natural wood falls scattered on the deep-sea floor.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
CAFC6DB6A43C54D999736AADFB623298.taxon	materials_examined	Material examined. Holotype: adult male (SMF 57053), RV L 0.38 mm, H 0.18 mm; LV L 0.38 mm, H 0.16 mm; dissected, soft parts mounted on two glass slide and valves on cardboard cell slide. Paratypes: 1 adult female (SMF 57054); dissected, soft parts mounted on a glass slide and valves on a cardboard cell slide: 1 juvenile (SMF 57055) in 80 % ethanol.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
CAFC6DB6A43C54D999736AADFB623298.taxon	diagnosis	Diagnosis. Shell trapezoidal in lateral view, with inflated medial portion of the shell. L around 0.38 mm. External surface of carapace reticulated characterized by polygonal muri and pitted secondary reticulation within the fossae. Sensilla long existing non-collar pores surrounded with distorted shaped sieve pores (Type C pore; see review by Danielopol et al. 2018). Hp: ejaculatory duct coiled many times; hook-like process rectangular shape with round corners and a concave along distal margin; distal lobe broad sub-triangular shape.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
CAFC6DB6A43C54D999736AADFB623298.taxon	description	Description of adult male (based on holotype SMF 57053). Carapace (Figs 3, 4 A-D, G) trapezoidal in lateral view, with inflated medial portion of the shell (Fig. 3). L around 0.38 mm. Greatest H situated behind middle L, equaling 35 % of total L. Dorsal margin somewhat roughly rounded, dorso-anterior margin converge rapidly anteriorly to a pointed tip located near the ventral margin, ventro-anterior margin relatively gently converge comparing with dorso-anterior margin, ventral margin concave immediately situated in front of middle L. Posterior margin slightly broader than anterior margin. Both valves bearing one protrusion on posterior end. External surface reticulated characterized by polygonal muri and pitted secondary reticulation within the fossae (Fig. 4 A, D, G). Sensilla long existing non-collar pores surrounded with distorted shaped sieve pores (Fig. 4 G); sieve pores clearly arranged in clusters, visible as pockmarks on the inside of the shell; approximate length major axis 6 - 30 μm and minor axis 6 - 12 μm (Fig. 4 B, D). Some simple pores (Type A sensu Puri and Dickau, 1969) existing on rim (Fig. 4 H). Inner calcified lamella broadly developed anteriorly and posteriorly in both valves (Fig. 3). Four adductor muscle scars form a vertical row (Fig. 3). Hingement merodont: LV carrying dents in medial element, posterior element with several sockets, anterior element with several shallow sockets (Fig. 4 D); RV with corresponding grooves in medial element, anterior and posterior elements elongated knob with shallow dents (Fig. 4 B). A 1 (Fig. 5 A) six podomeres [four and five podomeres divided by suture, same as defined 4 a and 4 b by Smith and Tsukagoshi (2005) and Boxshall et al. (2010)]. First podomere bare. Second podomere 1.5 times as long as first podomere, with one lateral distal seta. Third podomere one-third as long as first podomere, with one long antero-distal seta. Fourth to sixth podomeres same length as third podomere. Fourth podomere with one long antero-distal seta and one long lateral distal seta. Fifth podomere with three long antero-distal setae and one long postero-distal seta. Sixth podomere with two long distal setae and one long blunt tipped distal seta. A 2 (Fig. 5 B) five articulated podomeres. First podomere (basis) parallelogram-shaped, with setulae on antero-distal margin and one long six-annulated exopodite (spinneret seta) on antero-distal end. Second (first endopodal) podomere four-fifths as long as first podomere, with one short postero-distal spine. Third (second endopodal) podomere two-thirds as long as first podomere, with one short antero-distal seta. Fourth (third endopodal) podomere four-fifths as long as first podomere, with one stout postero-distal claw with curved tip and a row of setulae on posterior margin. Fifth (fourth endopodal) podomere small, with one stout distal claw with a row of setulae on postero-distal margin. Md (Fig. 5 C, D) coxa with one dorsal seta. Coxal endite consisting of eight teeth. Palp consisting of four podomeres. First podomere (basis) with one finger-like shaped sheet (exopodite) near proximal end, one short seta on dorsal margin, two short setae on ventral margin, and four long setulous setae on ventral side of distal margin. Second podomere with one setulous ventro-distal seta, one simple and setulous dorso-distal setae. Third podomere with one stout lateral distal claw. Fourth podomere with one broad and one slender distal claws each curved distally and with a row of setae on ventral margin. Mxl (Fig. 5 F) branchial plate (exopodite) with 11 plumose setae. Basal podomere with one palp (lost) and three endites. Endites: dorsal one with four simple distal setae; middle one with three simple distal setae; ventral one with three simple distal setae and one setulous distal seta. L 5 (Fig. 6 A) four articulated podomeres. First podomere with two plumose antero-lateral setae, one plumose antero-distal seta, and one plumose dorso-proximal seta. Second podomere half as long as first podomere, with one plumose antero-distal seta. Third podomere one-third as long as first podomere, bare. Fourth podomere half as long as first podomere, with one stout sclerotized distal claw with a few sharp spines on antero-distal margin. L 6 (Fig. 6 B) four articulated podomeres. First podomere with one plumose antero-lateral seta, one plumose antero-distal seta, and one plumose dorso-proximal seta. Second podomere half as long as first podomere, with one long simple antero-distal seta. Third podomere one-fourth as long as first podomere, bare. Fourth podomere three-eighths as long as first podomere, with one stout sclerotized distal claw with a few sharp spines on antero-distal margin. L 7 (Fig. 6 C) four articulated podomeres. First podomere with two simple antero-lateral setae and one plumose antero-distal seta. Second podomere three-fourths as long as first podomere, with one plumose antero-distal seta. Third podomere one-fourth as long as first podomere with a row of setulae on distal margin. Fourth podomere half as long as first podomere, with one stout sclerotized distal claw with a few sharp spines on antero-distal margin. Brush-shaped organ absent. Hp and posterior body (Fig. 6 E, F) symmetrical. Ejaculatory duct coiled many times. Hook-like process rectangular shape with round corners and a concave along distal margin. Distal lobe broad sub-triangular shape. Posterior body left and right sides bearing two setulous furcal setae.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
CAFC6DB6A43C54D999736AADFB623298.taxon	description	Description of adult female (based on paratype SMF 57054). Carapace (Fig. 4 E, F, H) trapezoidal in lateral view, with inflated medial portion of the shell. LV, L 0.43 mm, H 0.17 mm. Dorsal and ventral margins almost flat. Both valves bearing one protrusion on posterior end. Muri of surface reticulation thicker than that of male. Mxl (Fig. 5 E) branchial plate (exopodite) with 13 plumose setae. Basal podomere with one palp (endopodite) and three endites. Palp consisting of one podomere, with three simple distal setae. Endites: dorsal one with four simple distal setae; middle one with four simple distal setae; ventral one with three simple distal setae and one setulous distal seta. L 5 (Fig. 6 D) small difference against male's L 5: one plumose antero-distal seta shorter rather than that of male. Copulatory organ and posterior body (Fig. 6 G) female genital opening paired. Sclerotized framework of genital opening roughly circular. Spermathecal duct long connecting with genital opening. Genital lobe paired with each two setulous furcal setae.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
CAFC6DB6A43C54D999736AADFB623298.taxon	etymology	Etymology. Named after reticulated surface ornamentation of the carapace.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
CAFC6DB6A43C54D999736AADFB623298.taxon	distribution	Distribution. Only recorded from the type locality.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
846117AB0A005381AB39763A7579C517.taxon	materials_examined	Material examined. Holotype: adult male (SMF 57056), LV; L 0.32 mm, H 0.16 mm: RV; L 0.31 mm, H 0.17 mm. Dissected, soft parts mounted on two glass slides and valves on a cardboard cell slide. Paratypes: 1 adult male (SMF 57057); dissected, soft parts mounted on a glass slide and valves on a cardboard cell slide: 2 female (SMF 57058, 57059); dissected, soft parts mounted on a glass slide and valves on a cardboard cell slide.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
846117AB0A005381AB39763A7579C517.taxon	diagnosis	Diagnosis. Shell sub-triangular in lateral view. LV; L 0.32 mm, H 0.16 mm: RV; L 0.31 mm, H 0.17 mm. Greatest H situated just behind middle L. External surface of carapace covered with shallow pits except central and mid-ventral areas of valves; pits size increasing from marginal to near central area of valves. Sensilla long existing non-collar pores surrounded with sieve pores. Hp: ejaculatory duct short and curved; hook-like process elongated conical shape; distal lobe sub-triangular.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
846117AB0A005381AB39763A7579C517.taxon	description	Description of adult male (based on holotype SMF 57056). Carapace (Figs 7, 8 A-D) sub-triangular in lateral view. LV; L 0.32 mm, H 0.16 mm: RV; L 0.31 mm, H 0.17 mm. Greatest H situated just behind middle L. Dorsal margin arched; RV more steeply arched than LV. Anterior margin rounded; RV narrower than LV. Ventral margin of both valve weakly concave situated in front of middle L. Posterior margin rounded. External surface covered with shallow pits except central and mid-ventral areas of valves; pits size increasing from marginal to near central area of valves (Fig. 8 A, B). Sensilla long existing non-collar pores surrounded with sieve pores (Fig. 8 C): circular shaped sieve pores in anterior and posterior areas, approximate diameter 4 μm; elliptical shaped sieve pores in other areas, approximate length major axis 10 - 20 μm and minor axis 4 - 9 μm. Inner calcified lamella broadly developed in both valves (Figs 7, 8 D). Four adductor muscle scars form a vertical row (Fig. 7). Hingement lophodont (Figs 7, 8 D). A 1 (Fig. 9 A) six podomeres [four and five podomeres divided by suture, same as defined 4 a and 4 b by Smith and Tsukagoshi (2005) and Boxshall et al. (2010)]. First podomere bare. Second podomere three-fifths as long as first podomere with one postero-distal seta. Third podomere two-fifths as long as first podomere with one short antero-distal seta. Fourth to sixth podomeres same length as third podomere. Fourth podomere with one short antero-distal seta and one long postero-distal seta. Fifth podomere with three long antero-distal setae and one long postero-distal seta. Sixth podomere with two long distal setae and one long blunt tipped distal seta. A 2 (Fig. 9 B) five podomeres. First podomere (basis) parallelogram-shaped, with one long two-annulated exopodite (spinneret seta) on antero-distal end. Second (first endopodal) podomere half lengths as first podomere, with one long setulous postero-distal seta. Third and fourth podomeres fused. Third (second endopodal) podomere half lengths as first podomere, with one short antero-middle seta, one short antero-distal seta, and two short postero-distal setae. Fourth (third endopodal) podomere same length as first podomere, with one stout setulous postero-distal seta. Fifth (fourth endopodal) podomere one-fourth as long as first podomere, with one stout distal claw with a row of spines on posterior margin. Md (Fig. 9 C) coxa with one slender dorsal seta. Coxal endite consisting of eight teeth. Palp consisting of three podomeres. First podomere (basis), with one short seta on ventral margin and two short dorso-distal setae. Second podomere with two short ventro-distal setae and one lateral distal seta. Third podomere, with two slender setae on ventral margin, one slender distal seta, and one stout distal claw curved distally with a row of setae on ventral margin. Mxl (Fig. 9 D) branchial plate (exopodite) strongly reduced, consisting with 1 seta. Basal podomere with one palp (endopodite) and three endites. Palp consisting of one podomere, with three simple distal setae. Endites: dorsal one with one simple and one spatula-like distal setae; middle one with one simple and one spatula-like distal setae; ventral one with two simple distal setae. L 5 (Fig. 9 E) four articulated podomeres. First podomere with one antero-lateral seta, one antero-distal seta, and one dorso-lateral seta. Second podomere one-fourth as long as first podomere, with one antero-distal seta. Third podomere one-eighth as long as first podomere, bare. Fourth podomere one-fourth as long as first podomere, with one stout sclerotized distal claw with a few spines on antero-distal margin. L 6 (Fig. 9 F) four articulated podomeres. First podomere with one antero-lateral seta, one antero-distal seta, and one plumose dorso-lateral seta. Second podomere half as long as first podomere, with one thick antero-distal seta. Third podomere one-sixth as long as first podomere, bare. Fourth podomere one-third as long as first podomere, with one stout sclerotized distal claw with a few spines on antero-distal margin. L 7 (Fig. 9 G) four articulated podomeres. First podomere with one antero-lateral spine, one antero-distal seta, and one dorso-lateral seta. Second podomere four-fifths as long as first podomere, with one thick antero-distal seta. Third podomere one-fifth as long as first podomere, bare. Fourth podomere three-fifths as long as first podomere, with one long stout sclerotized distal claw with a few spines on antero-distal margin. Brush-shaped organ absent. Oral cone (Fig. 10 A) subtriangular in lateral view, with six teeth on apex and one rake-like organ with three teeth. Hp and posterior body (Fig. 10 B) symmetrical. Ejaculatory duct short and curved. Hook-like process elongated conical shape. Distal lobe subtriangular. Posterior body left and right sides bearing two furcal setae.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
846117AB0A005381AB39763A7579C517.taxon	description	Description of adult female (based on paratype SMF 57058). Carapace (Fig. 8 E, F) sub-triangular in lateral view. LV; L 0.33 mm, H 0.20 mm: RV; L 0.33 mm, H 0.18 mm. L 5 (Fig. 9 H) longer than that of male in appearance. Four articulated podomeres. First podomere with two antero-lateral seta, one antero-distal seta, and one dorso-lateral seta. Second podomere four-fifths as long as first podomere, with one antero-distal seta. Third podomere two-fifths as long as first podomere, bare. Fourth podomere three-fifths as long as first podomere, with one stout sclerotized distal claw with a few spines on antero-distal margin. Copulatory organ and posterior body (Fig. 10 C) female genital opening paired. Sclerotized framework of genital opening roughly circular. Genital lobe paired with each two furcal setae.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
846117AB0A005381AB39763A7579C517.taxon	etymology	Etymology. The species epithet ' Redekea abyssalis ' refers to the abyssal zone of the Pacific Ocean where the species was discovered.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
846117AB0A005381AB39763A7579C517.taxon	distribution	Distribution. Only recorded from the type locality.	en	Tanaka, Hayato, Yoo, Hyunsu, Pham, Huyen Thi Minh, Karanovic, Ivana (2021): Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. Arthropod Systematics & amp; Phylogeny 79: 171-188, DOI: http://dx.doi.org/10.3897/asp.79.e62282, URL: http://dx.doi.org/10.3897/asp.79.e62282
