Cerviniella Smirnov 1946
Genus Cerviniella Smirnov, 1946 Amended diagnosis. Marine, free living Cerviniinae. Body with clear distinction between prosome and urosome. Prosome 4-segmented, with first pedigerous somite incorporated into cephalothorax. Urosome 5-segmented, comprising P5-bearing somite, genital double-somite, 2...
| Main Authors: | , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2012
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| Subjects: | |
| Online Access: | https://doi.org/10.5281/zenodo.5616002 http://treatment.plazi.org/id/03D1840FFFFA5973FF2A174AAFD8FADA |
| Summary: | Genus Cerviniella Smirnov, 1946 Amended diagnosis. Marine, free living Cerviniinae. Body with clear distinction between prosome and urosome. Prosome 4-segmented, with first pedigerous somite incorporated into cephalothorax. Urosome 5-segmented, comprising P5-bearing somite, genital double-somite, 2 free abdominal somites and anal somite. Genital doublesomite with P6 bearing 2–3 setae, lateral projections (when present) hook-like. Anal somite with operculum and large anal opening. Caudal rami elongate, slightly to markedly divergent, slightly to markedly asymmetrical, each ramus with 7 setae. Rostrum fused to cephalic shield. Antennule of female 5- to 7-segmented; with aesthetasc on segment II or III; additional aesthetasc present or absent on most distal segment. Antenna with allobasis or distinct basis; endopod 1- or 2-segmented, distal segment with 4 –7 apical elements and 2–3 elements laterally; exopod 4-segmented with armature formula: I-[1–2 setae], II-[1–2 setae], III-[1 seta], IV-[2–3 setae]. Mandible with gnathobase bearing multicuspidate teeth and 1 seta around distal margin; basis with 3–4 setae; endopod 1- or 2-segmented with 6–10 setae on distal segment; and exopod 1- to 4-segmented with 3–6 setae in total. Maxillule with well developed arthrite with 7–14 elements in total; coxa with endite bearing 2–6 setae and epipodite represented by 1 seta or completely absent; basis and endopod fused, with 5–14 setae; exopod 1-segmented, with 3 setae. Maxillary syncoxa with 4 endites, formula [3–4, 3, 2–3, 3]; allobasis with well developed basal endite forming claw with 1–3 accessory elements, endopodal armature of allobasis represented by 2 elements; endopod 1- to 3-segmented, with 4–8 setae in total. Maxilliped with syncoxa and basis or with elongated protopod; syncoxal endites formula [1–2, 2–3, 2], basal endite represented by 2 elements; endopod 2-segmented, formula: I-[0–1], II-[3–4]. P1 basis with 1 inner and 1 outer seta, exopod 1-segmented and endopod 1- or 2-segmented. P2–P3 basis with outer seta, ... |
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