Cyphocarididae
Creators: name: Hughes, Lauren E.
name: Lowry, James K.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Cyphocarididae

description: Key to world Cyphocarididae species
1. Pereopod 7 basis posterior margin smooth. Coxae 1–2 reduced, covered by coxa 3................................................................................................... Procyphocaris indurata (K.H. Barnard, 1925)
- Pereopod 7 basis posterior margin serrate. Coxae 1–3 all small, partly covered by coxa 4................ 2 (Cyphocaris)
2. Pereopod 5 basis posterior margin with spur................................................................ 3
- Pereopod 5 basis posterior margin without spur............................................................. 14
3. Pereopod 5 basis posterior margin spur extremely elongate, reaching beyond pleonite 1.............................. 4
- Pereopod 5 basis posterior margin spur not reaching beyond pleonite 1.......................................... 10
4. Pereopod 5 basis posterior margin spur ventral margin with serrations........................................... 5
- Pereopod 5 basis posterior margin spur ventral margin smooth, without serration.................................. 8
5. Pereopod 5 basis posterior margin spur ventral margin with single serration...................................... 6
- Pereopod 5 basis posterior margin spur ventral margin with multiple serrations..................................... 7
6. Pereonite 1 dorsal projection short, not extending beyond head.......................... C. geyserensis Ledoyer, 1986
- Pereonite 1 dorsal projection long, extending well beyond head.................................. C. tartaros sp. nov.
7. Gnathopod 2 coxa sub-triangular. Epimeron 2 posteroventral corner quadrate. Telson almost reaching posterior end of uropod 3........................................................................... C. ohtsukai Tomikawa, 2009
- Gnathopod 2 coxa sub-quadrate. Epimeron 2 posteroventral corner rounded. Telson not reaching mid-length of inner ramus of uropod 3........................................................................ C. cornuta Ledoyer, 1978
8. Head eye not greatly enlarged, length twice as long as wide. Telson reaching posterior end of uropod 3......................................................................................... C. bellona Lowry and Stoddart, 1994
- Head eye greatly enlarged, length at least 3 times longer than wide. Telson exceeding posterior end of uropod 3......... 9
9. Pereonite 1 forming long, narrow, slightly up-turned process in male, not developed in female. Telson 1.5 × as long as uropod 3........................................................................... C. johnsoni Shoemaker, 1934
- Pereonite 1 forming long, narrow, slightly down-turned process in both sexes. Telson 1.8 × as long as uropod 3................................................................................. C. tunicola Lowry and Stoddart, 1997
10. Pereopod 5 basis posterior margin spur margins serrate...................................................... 11
- Pereopod 5 basis posterior margin spur margins smooth...................................................... 12
11. Pereopod 4 coxa anterior margin is subacute. Telson short not reaching the end of uropod 3......... C. anonyx Boeck, 1871
- Pereopod 4 coxa anterior margin is broadly rounded. Telson long reaching end of uropod 3............. C. ananke sp. nov.
12. Pereopod 5 basis proximal posterior margin smooth................................... C. faurei K.H. Barnard, 1916
- Pereopod 5 basis proximal posterior margin serrate......................................................... 13
13. Pereopod 5 basis posterior margin spur not exceeding merus.............................. C. bouvieri Chevreux, 1916
– Pereopod 5 basis posterior margin spur exceeding length of merus....................... C. challengeri Stebbing, 1888
14. Pereonite 1 dorsal projection extending well beyond head.................................................... 15
- Pereonite 1 dorsal projection absent or extending slightly beyond head.......................................... 16
15. Pereopod 5 basis posterior margin weakly serrate (or strongly in male), posterodistal corner rounded...... C. nesoi sp. nov.
- Pereopod 5 basis posterior margin strongly serrate, posterodistal corner subacute............. C. richardi Chevreux, 1905
16. Head lateral cephalic lobe concave......................................... C. latirama Hendrycks & Conlan, 2003
- Head lateral cephalic lobe subacute................................................... C. polaris Gurjanova, 1951
description: Published as part of Hughes, Lauren E. & Lowry, James K., 2015, A review of the world Cyphocarididae with description of three new species (Crustacea, Amphipoda, Lysianassoidea), pp. 1-40 in Zootaxa 4058 (1) on pages 34-35, DOI: 10.11646/zootaxa.4058.1.1, http://zenodo.org/record/235526