Corophiini

Myers, Alan A., De-La-Ossa-Carretero, Jose Antonio & Dauvin, Jean-Claude, 2010, A new species of Medicorophium Bousfield, M. longisetosum n. sp. from the western Mediterranean, coast of Spain, Zootaxa 2450, pp. 53-60 : 59

Key to the Corophiini of the Mediterranean coast of Spain

1. Urosome segments coalesced ....................................................................................................................................... 2

- Urosome segments free................................................................................................................................................. 8

2. Uropods inserted in notches in lateral margins of urosome.......................................................................................... 3

- Uropods inserted in ventral surface of urosome ......................................................................... Apocorophium acutum

3. Antenna 2 article 4 with large terminal spine or spines (males)................................................................................... 4

- Antenna 2 article 4 with robust setae, but lacking spines (females)............................................................................. 6

4. Rostrum elongate, 1/3 length of antenna 1 article 1 ......................................................... Monocorophium insidiosum

- Rostrum short, less than 1/3 length of antenna 1 article 1............................................................................................ 5

5. Antenna 2 article 4 without robust setae........................................................................ Monocorophium acherusicum

- Antenna 2 article 4 with 2–3 robust setae.............................................................................. Monocorophium sextonae

6. Antenna 2 article 4 with solitary robust setae only................................................................ Monocorophium sextonae

- Antenna 2 article 4 with some paired robust setae ....................................................................................................... 7

7. Antenna 2 article 5 with two or more robust setae ........................................................ Monocorophium acherusicum

- Antenna 2 article 5 with one robust seta only................................................................... Monocorophium insidiosum

8. Uropod 3 ramus short, spatulate ................................................................................................... Corophium orientale

– Uropod 3 ramus elongate, parallel-sided ............................................................................................. ……………….9

9. Antenna 2 peduncular article 4 with an array of long robust setae................................ Medicorophium longistetosum

– Antenna 2 peduncular article 4 with a few short robust setae, or no robust setae ..................................................... 10

10. Rostrum triangular .............................................................................................................. Medicorophium runcicorne

– Rostrum truncate ................................................................................................................. Medicorophium annulatum