Cumella

Petrescu, Iorgu, Chatterjee, Tapas & Schizas, Nikolaos V., 2014, Three new Nannastacidae (Crustacea: Cumacea) species from a Caribbean mesophotic ecosystem, Zootaxa 3765 (4), pp. 360-370 : 366-367

Key to species of Cumella genus from Western Atlantic (northern part)

A number of 38 species were known from the northern part of Western Atlantic Ocean. For 33 species are known the female or both sexes.

1. Carapace with dorsal spines and/ or tubercles............................................................... 2

- Carapace without dorsal spines and/ or tubercles........................................................... 20

2. Two dorsal row of spines on carapace.................................................. biserrata Petrescu, 2002

- One dorsal row of spines on carapace...................................................................... 3

3. Carapace with spines and tubercles..................................................... ruetzleri Petrescu, 2002

- Carapace with spines / tubercles......................................................................... 4

4. Carapace with dorsal tubercles........................................................... vicina Zimmer, 1944

- Carapace with dorsal spines............................................................................. 5

5. Ocular lobe with frontal and lateral lenses................................................................. 6

- Ocular lobe with two lateral lenses....................................................................... 16

6. Uropodal peduncle twice 6th pleonite length.............................. longicaudata Petrescu, Iliffe & Sarbu, 1994

- Uropodal peduncle shorter than twice 6th pleonite length...................................................... 7

7. Carapace with 4–12 dorsal spines......................................................................... 8

- Carapace with 1–3 dorsal spines........................................................................ 13

8. Carapace with 8–12 dorsal spines........................................................................ 9

- Carapace with 4–5 dorsal spines....................................................................... 12

9. Carapace with 12 dorsal spines................................................. spinifera Petrescu & Heard, 2004

- Carapace with 8 dorsal spines.......................................................................... 10

10. Uropodal peduncle shorter than 6th pleonite.............................. jamaicensis Petrescu, Iliffe & Sarbu, 1994

- Uropodal peduncle longer than 6th pleonite............................................................... 11

11. Uropodal endopod with 3 medial setae.......................................................... achimae n. sp.

- Uropodal endopod with 2 medial setae................................. pagani Petrescu, Chatterjee & Schizas, 2014

12. Carapace with 5 dorsal spines............................................. medeeae Petrescu, Iliffe & Sarbu, 1994

- Carapace with 4 dorsal spines..................................... manolelii Petrescu, Chatterjee & Schizas, 2013

13. Carapace with 3 dorsal spines.............................................. zimmeri Petrescu, Iliffe & Sarbu, 1994

- Carapace with 1–2 dorsal spines......................................................................... 14

14. Carapace with 2 dorsal spines........................................................................... 15

- Carapace with 1 dorsal spine................................................ antipai Petrescu, Iliffe & Sarbu, 1994

15. Uropodal peduncle setose..................................................... somersi Petrescu & Sterrer, 2001

- Uropodal peduncle glabrous........................................... gurui Petrescu, Chatterjee & Schizas, 2014

16. Carapace with serrate ventral margin..................................................................... 17

- Carapace with nude ventral margin............................................................ victoriae n. sp.

17. Carapace with 7 dorsal spines........................................................... serrata Calman, 1911

- Carapace with 4 dorsal spines.................................... alexandrinae Petrescu, Chatterjee & Schizas, 2012

18. Ocular lobe with lenses placed in two longitudinal rows....................................... pilosa Băcescu, 1971

- Ocular lobe with lenses normally placed.................................................................. 19

19. Ocular lobe with 5 lenses.............................................................................. 20

- Ocular lobe with 1–2 lenses..............................................................................

20. Body covered with long setae........................................................ coralicola Băcescu, 1971

- Body covered with shorter setae........................................................................ 21

21. Uropodal peduncle longer than 6th pleonite............................................................... 22

- Uropodal peduncle shorter than 6th pleonite.............................................................. 32

22. Ocular lobe with 7 lenses............................................................ murariui Petrescu, 2002

- Ocular lobe with 3–5 lenses........................................................................... 23

23. Ocular lobe with 5 lenses.............................................................................. 24

- Ocular lobe with 1–3 lenses............................................................................ 27

24. Carapace with a dorsal longitudinal carina............................................. abacoensis Petrescu, 1996

- Carapace without dorsal longitudinal carina................................................................ 25

25. Pereopod 5 with carpus times propodus length................................... garrityi Băcescu & Muradian, 1977

- Pereopod 5 with shorter carpus.......................................................................... 26

26. Pereopod 5 carpus times propodus length............................................ andri Petrescu & Iliffe, 1992

- Pereopod 5 carpus times propodus length....................................... bahamensis Petrescu & Iliffe, 1992

27. Ocular lobe with 3 lenses.............................................................................. 28

- Ocular lobe with 1–2 lenses............................................................................ 29

28. Uropodal endopod with 3 medial setae........................................... bacescui Petrescu & Iliffe, 1992

- Uropodal endopod with 2 medial setae................................ solomoni Petrescu, Chatterjee & Schizas, 2013

29. Ocular lobe with 2 lenses.............................................................................. 30

- Ocular lobe with 1 lenses............................................................... iliffei Băcescu, 1992

30. Pleonite 5 with 3 pigmented dots.................................................... tripunctata Băcescu, 1971

- Pleonite 5 without pigmented dots....................................................................... 31

31. Uropodal endopod with 2 medial setae................................................... ocellata Băcescu, 1992

- Uropodal endopod with 4 medial setae................................................... hirsuta ( Hansen, 1895)

32. Ocular lobe with 5 lenses.............................................................................. 33

- Ocular lobe with 2 lenses............................................................ meredithi Băcescu, 1971

33. Right uropodal endopod ........................................................... radui Petrescu & Iliffe, 1992

- Curved uropodal endopod........................................................... clavicauda Calman, 1911