Cyphocarididae
Creators: name: Sorrentino, Rayane
name: Alves, Jessika
name: Johnsson, Rodrigo
name: Senna, André R.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Cyphocarididae

description: Key to world Cyphocarididae species (modified from Hughes & Lowry, 2015)
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........................................................... 15
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........................................... 0
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 Hughes & Lowry, 2015
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 & 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 Hughes & Lowry, 2015
12. Pereopod 5 basis proximal posterior margin smooth......................................................... 13
- Pereopod 5 basis proximal posterior margin serrate......................................................... 14
13. Gnathopod 1 merus with subtrapezoid serrated structure on the posterodistal corner. Pereopod 5 coxa well-developed lobe on anterodistal margin, broadly rounded and apically reverted backwards.............................. C. pedroi sp. nov.
- Gnathopod 1 merus anterodistal margin tapered. Pereopod 5 coxa, anterodistal margin expanded posteriorly, rounded.................................................................................... C. faurei K.H. Barnard, 1916
14. 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
15. Pereonite 1 dorsal projection extending well beyond head................................................... 16
- Pereonite 1 dorsal projection absent or extending slightly beyond head......................................... 17
16. Pereopod 5 basis posterior margin weakly serrate (or strongly in male), posterodistal corner rounded.............................................................................................. C. nesoi Hughes & Lowry, 2015
- Pereopod 5 basis posterior margin strongly serrate, posterodistal corner subacute............. C. richardi Chevreux, 1905
17. Head lateral cephalic lobe concave........................................ C. latirama Hendrycks & Conlan, 2003
- Head lateral cephalic lobe subacute................................................. C. polaris Gurjanova, 1951
description: Published as part of Sorrentino, Rayane, Alves, Jessika, Johnsson, Rodrigo & Senna, André R., 2016, A new species of Cyphocarididae (Crustacea, Amphipoda, Lysianassoidea) from off the northeastern Brazilian coast, pp. 345-356 in Zootaxa 4161 (3) on page 354, DOI: 10.11646/zootaxa.4161.3.3, http://zenodo.org/record/256244