OXYCEPHALIDAE

Zeidler, Wolfgang, 2016, A review of the families and genera of the superfamily PLATYSCELOIDEA Bowman & Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea), together with keys to the families, genera and species, Zootaxa 4192 (1), pp. 1-136 : 70

publication ID

https://doi.org/ 10.11646/zootaxa.4192.1.1

publication LSID

lsid:zoobank.org:pub:B3AE1A8B-EE40-4ACF-879B-33B55FBD1FB8

DOI

https://doi.org/10.5281/zenodo.6069317

persistent identifier

https://treatment.plazi.org/id/4A641514-180F-FFC6-FF5E-FF64FA15FCF1

treatment provided by

Plazi

scientific name

OXYCEPHALIDAE
status

 

Key to the genera of the family OXYCEPHALIDAE View in CoL

1. Body extremely slender, with long, needle-shaped rostrum. Pereopod 7 reduced to basis (sometimes with one or two additional articles)......................................................................... Rhabdosoma White, 1847 View in CoL

- Body only moderately slender, rostrum produced into sharp or blunt point, never needle-shaped. Pereopod 7 with all articles present or if reduced, body is robust....................................................................... 2

2. Rostrum with broad lateral flanges................................................ Calamorhynchus Streets, 1878 View in CoL

- Rostrum without lateral flanges.......................................................................... 3

3. Double urosomite length more than 3 x width. Uropod 1 with very short exopod................. Leptocotis Streets, 1877 View in CoL

- Double urosomite length less than 3 x width. Uropods 1–3 with well-developed exopoda and endopoda................. 4

4. Rostrum rounded or only slightly pointed. Pereopods 5 & 6 with basis not much wider than following articles........................................................................................ Glossocephalus Bovallius, 1887 View in CoL

- Rostrum pointed. Pereopods 5 & 6 with basis considerably wider than following articles............................. 5

5. Pereopod 6; basis with postero-distal corner produced into distinct, almost up-turned, triangular process. Pereopod 7 with reduced number of articles........................................................ Tullbergella Bovallius, 1887 View in CoL

- Pereopod 6; basis with rounded postero-distal corner, not produced. Pereopod 7 with all articles present................. 6

6. Uropods 2 & 3; endopod fused with peduncle. Gnathopod 1 chelate.................. Oxycephalus Milne-Edwards, 1830 View in CoL

- Uropods 2 & 3; endopod articulated with peduncle. Gnathopod 1 sub-chelate...................................... 7

7 Head barrel-shaped. Coxae free, without processes........................................ Streetsia Stebbing, 1888 View in CoL

- Head globular. Coxae fused with pereonites. Pereonite 5 (fused coxa) often produced into backward-pointed process................................................................................... Cranocephalus Bovallius, 1890 View in CoL

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