Cebocaridae, Lowry & Stoddart, 2011

Lowry, J. K. & Stoddart, H. E., 2011, The new deep-sea families Cebocaridae fam. nov., Cyclocaridae fam. nov. and Thoriellidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea), Zootaxa 2747 (1), pp. 53-68 : 56

Key to Genera of Cebocaridae

1. Urosomites 1–3 free................................................................................... 2

– Urosomites 2 and 3 fused................................................................. Crybelocyphocaris

2. Pereopod 7 basis expanded posteriorly..................................................................... 3

– Pereopod 7 basis linear..................................................................... Cyphocarioides

3. Uropod 3 rami subequal in length........................................................................ 4

– Uropod 3 inner ramus shorter than outer ramus.............................................................. 5

4. Mandibular palp present; pereopod 7 simple................................................... Crybelocephalus

– Mandibular palp absent; pereopod 7 prehensile.................................................. Mesocyclocaris

5. Telson entire.................................................................................. Cebocaris

– Telson cleft.......................................................................................... 6

6. Mandibular palp present, 3-articulate...................................................................... 7

– Mandibular palp vestigial 1- or 2-articulate or absent............................................. Metacyphocaris

7. Antenna 2 flagellum well-developed; mandibular palp large, with setae on posterior margin of articles 2 and 3...................................................................................................... Metacyclocaris

– Antenna 2 flagellum very small or vestigial; mandibular palp small, with apical setae only............................ 8

8. Antenna 2 flagellum short; uropod 3 inner ramus slightly shorter than outer ramus...................... Paracyphocaris

– Antenna 2 flagellum vestigial (less than 3 articles); uropod 3 inner ramus much shorter than (less than 0.2 ×) outer ramus............................................................................................ Mesocyphocaris