Pachyschesidae Kamaltynov, 1999
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publication ID |
https://doi.org/ 10.11646/zootaxa.3610.1.1 |
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publication LSID |
lsid:zoobank.org:pub:AA71AC2D-C7BF-43AE-9E25-29A5EC843B89 |
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DOI |
https://doi.org/10.5281/zenodo.6150759 |
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persistent identifier |
https://treatment.plazi.org/id/164ACE3F-BE1B-FFAF-FF0B-FD26FE32B34B |
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treatment provided by |
Plazi |
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scientific name |
Pachyschesidae Kamaltynov, 1999 |
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Pachyschesidae Kamaltynov, 1999 View in CoL
Type genus. Pachyschesis Bazikalova, 1945 .
Diagnostic description. Body laterally compressed. Eyes well developed, poorly developed or absent, if present then round, ovoid, reniform, ventrally tapered or subrectangular. Antennae 1–2 calceoli absent. Antenna 1 longer than antenna 2; peduncular article 1 longer than article 2; article 2 longer than article 3; article 3 shorter than article 1; peduncular articles 1–2 not geniculate; accessory flagellum short or minute. Antenna 2 peduncular article 1 enlarged, bulbous. Mandible palp symmetrical. Maxilla 1 basal endite apically setose; palps symmetrical. Maxilla 2 basal endite without oblique setal row. Labium inner lobes vestigial or absent. Coxal gills on pereopods 2–6, not stalked; sternal gills absent; sternal blisters absent; oostegites fringing setae simple. Gnathopod 1 subchelate; similar in males and females (not sexually dimorphic); similar in size to gnathopod 2; propodus palm without robust setae along palmar margin. Gnathopod 2 subchelate; similar in males and females (not sexually dimorphic); carpus not produced along posterior margin of propodus, projecting between merus and propodus. Pereopods 3–4 not sexually dimorphic. Pereopod 4 without posteroventral lobe. Pereopod 5 subequal in length to pereopod 6; coxa with large or with small anteroventral lobe. Pereopod 7 subequal in length to pereopod 5. Pleonites 1–3 without dorsal carinae. Urosomites 1–3 free; with slender or robust dorsal setae. Urosomite 1 without large distoventral robust seta. Urosomite 2 without dorsal setae. Uropod 1 without basofacial robust setae. Uropod 3 not sexually dimorphic; biramous, with plumose setae; endopod shorter than exopod. Telson deeply cleft ; dorsal or lateral robust setae absent; apical robust setae absent.
Habitat. Freshwater, epigean.
Included genera. Pachyschesis Bazikalova, 1945 .
Distribution. Lake Baikal.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.