taxonID	type	description	language	source
BC1A5767D8CD572182EED951CA1108B2.taxon	description	Description. Head and cephalic appendages. Carapace with anterior margin obtusely produced into wide, triangular rostrum (Fig. 2 C, D); cervical groove distinct at anterior two-fifths, posterior margin excavated, leaving last thoracic somite uncovered in dorsal view, but sufficiently covered laterally (Fig. 2 A, B): antero-ventral corner rounded (Fig. 2 A, B). Eye slightly depressed, subglobular in dorsal aspect; cornea comprise of small tube-like ommatidia situated in antero-lateral part without ocular process (Fig. 2 C-E). Antennule with first segment of peduncle longer than wide, with dorsal projection bearing 3 setae (Fig. 2 F, H); distolateral corner of first segment greatly produced anteriorly, distal part with 5 setae; second segment shortest, with dorsal projection bearing 2 setae and distal part with 2 setae; third segment subequal to first segment, with dorsal projection bearing 4 setae dorsally, middle part with 2 setae at the mesial margin for female while no seta on male, respectively and 2 setae at distomesial corner for male while 3 setae for female; the lobe completed with several long setae on male (Fig. 2 G) while no long setae on female. Antennal peduncle more robust in male than female and reaching 0.8 length of antennular peduncle and the sympod rounded (Fig. 2 I, J); antennal scale elongated, elliptical with apical suture, setose all round, reaching middle part of third segment of antennular peduncle, nearly 3 times as long as wide, not reaching distal end of antennal peduncle (Fig. 2 I, J). Labrum triangular, without process or spine in anterior part but with expanded disto-lateral parts (Fig. 2 K). Mandibular palp 3 - segmented, second segment longest and widened at mid-length, with barbed setae on both margins, 3 on middle part of inner margin, 1 seta on proximal part of outer margin and 5 setae on the distal margin of the second segment (Fig. 2 L); incisor process well developed and comprised of a series of teeth forming serrated sharp ridge; lacinia mobilis showing different shape in right and left mandibles, and spine row and molar process clearly visible (Fig. 2 M). Maxillule well developed, basal lobe with spines densely, wider than precoxal lobe (Fig. 2 N). Maxilla with 4 distal setae and smooth setae on exopod (Fig. 2 O); distal segment of endopod longer than proximal one; basal and coxal endites well developed, with dense setae. Thoracopods. Flagelliform part of first and eighth thoracopodal exopods composed of 8 segments (Figs 3 A, 4 C), while second to seventh thoracopodal exopods with 9 segments (Figs 3 C, E, G, I, 4 A, B). First thoracopodal endopod short and basis well developed, larger than endite; medial margins of carpus, propodus and dactylus heavily setose (Fig. 3 A, B). Second thoracopodal endopod stout (Fig. 3 C); basis with 2 setae; preischium with 1 seta, shorter than basis; ischium longer than preischium with 6 setae; merus longest, with 2 setae; carpopropodus 0.75 times as long as merus, with several barbed setae (Fig. 3 D); dactylus 0.5 times as long as carpopropodus, 1.6 times as long as width, with several barbed setae (Fig. 3 D). Third and fourth thoracopodal endopods similar in form (Fig. 3 E, G) and more slender than second (Fig. 3 C); basis with 2 setae; ischium slightly longer than merus, with 4 - 6 setae on inner margin; merus slightly shorter than carpopropodus; carpopropodus constituting 3 sub-segments with barbed setae, basal segment longest and second shortest; dactylus short, apex with long barbed seta and several setae (Fig. 3 E-H). Fifth thoracopodal endopod longest (Fig. 3 I), with similar morphological characters to sixth, seventh, and eighth (Fig. 4 A-C). Sixth thoracopodal endopod (Fig. 4 A) subequal in length to seventh and eighth (Fig. 4 B, C); basis with 1 seta, ischium longer than merus, with several setae; merus with 6 setae; carpopropodus constituting 4 sub-segments, with several setae, basal segment longest, third segment shortest; dactylus short, with several setae. Penis (Fig. 4 C) long, 0.8 times as long as ischium of eighth thocacopodal endopod, apex rounded, with several smooth setae. Pleon and pleopods. Abdominal somites smooth, without hairs, spines or folds, ventral sternites without process, anterior 5 somites subequal in length, sixth somite 1.3 times as long as preceding somite (Fig. 2 A, B). Five pleopods reduced to unsegmented lobes, not modified; first pleopod shortest, second to fourth ones subequal in length and fifth pleopod longest, 1.6 times as long as fourth (Fig. 4 D-H). Uropod and telson. Uropodal endopod slightly shorter than exopod, without spine on ventral side of statocyst region (Fig. 4 I). Telson (Fig. 4 K-N) subtriangular, 0.8 times as long as sixth abdominal somite, 1.3 times as long as basal width, excluding apical denticles, with 11 - 18 ar ticulated denticles in males and 12 - 19 in females on distal quarter margin (Table 1), increasing in length distally.	en	Yolanda, Rofiza, Sawamoto, Shozo, Lheknim, Vachira (2019): A new species in the genus Heteromysoides (Crustacea, Mysida, Mysidae) from Songkhla Lagoon, southern Thailand. Zoosystematics and Evolution 95 (2): 535-542, DOI: http://dx.doi.org/10.3897/zse.95.39214, URL: http://dx.doi.org/10.3897/zse.95.39214
BC1A5767D8CD572182EED951CA1108B2.taxon	etymology	Etymology. This species is named after the locality, Songkhla Lagoon, where of the specimens were found.	en	Yolanda, Rofiza, Sawamoto, Shozo, Lheknim, Vachira (2019): A new species in the genus Heteromysoides (Crustacea, Mysida, Mysidae) from Songkhla Lagoon, southern Thailand. Zoosystematics and Evolution 95 (2): 535-542, DOI: http://dx.doi.org/10.3897/zse.95.39214, URL: http://dx.doi.org/10.3897/zse.95.39214
BC1A5767D8CD572182EED951CA1108B2.taxon	distribution	Distribution. This species was captured in brackish waters above a muddy substratum at Thale Sap and Thale Sap Songkhla, Songkhla Lagoon, southern Thailand.	en	Yolanda, Rofiza, Sawamoto, Shozo, Lheknim, Vachira (2019): A new species in the genus Heteromysoides (Crustacea, Mysida, Mysidae) from Songkhla Lagoon, southern Thailand. Zoosystematics and Evolution 95 (2): 535-542, DOI: http://dx.doi.org/10.3897/zse.95.39214, URL: http://dx.doi.org/10.3897/zse.95.39214
