Epimeria

Lörz, Anne-Nina & Coleman, Charles Oliver, 2014, Amazing new Amphipoda (Crustacea, Epimeriidae) from New Zealand’s deep-sea, Zootaxa 3838 (4), pp. 423-434 : 442-443

Key to the Pacific species of Epimeria

1. Pereon segments lacking dorsal carinae.................................................................... 4

- Pereon segments bearing dorsal carinae.................................................................... 2

2. Coxa 5 produced...................................................................................... 3

- Coxa 5 not produced.................................................................................. 10

3. Dorsal carinae starting on pereon 4; epimeral plates bearing produced postero-lateral corners and at least two produced lateral

teeth each............................................................................... Epimeria victoria - Dorsal carinae starting on pereon 6; posterolateral corners of epimeral plates 1 and 2 rounded or weakly produced....... 11

4. Eyes present.......................................................................................... 7

- Eyes absent.......................................................................................... 5

5. Coxa 5 produced..................................................................................... 6

- Coxa 5 not produced..................................................................... Epimeria yaquinae

6. Pleonites 1–3 with dorsal carinae; urosomite 1 dorsally produced; coxae 1–3 ventrally rounded...................... 12

- Pleonites 1–2 smooth; pleonite 3 and urosomite 1 dorsally produced; coxae 1–3 ventrally pointed.... Epimeria subcarinata

7. Urosomite 1 bearing dorsally pointed tooth. Rostrum expanding beyond first peduncle article of antenna 1 .............. 9

- Urosomite 1 lacking dorsally pointed tooth. Rostrum not expanding beyond first peduncle article of antenna 1 ............ 8

8. Protrusion of coxa 5 reaching posterior margin of epimeral plate 2. Telson not cleft, coxae 1–3 ventrally rounded................................................................................................. Epimeria norfanzi

- Coxa 5 not produced. Telson cleft, coxae 1–3 ventrally pointed................................... Epimeria pelagica

9. Head ventral lobe not produced. Coxa 4 ventral protrusion as long as posterior protrusion, coxa 5 protrusion not reaching epi- meral plates............................................................................... Epimeria cora

- Head ventral lobe produced, coxa 4 twice as long as wide, coxa 5 protrusion nearly reaching second epimeral plate............................................................................................... Epimeria pacifica

10. Double dorsal carinae on pleonites 1–3 ................................................................... 13

- Single dorsal carinae on pleonites 1–3 ......................................................... Epimeria bruuni

11. Pereonites 6 and 7 laterally smooth; coxa 1 ventrally rounded....................................... Epimeria horsti

― Pereonites 6 and 7 laterally bearing projections; coxa 1 ventrally subquadrate.................. Epimeria emma sp. nov.

12. Rostrum not expanding beyond first peduncle article of antenna 1 ................................. Epimeria glaucosa

- Rostrum expanding beyond second peduncle article of antenna 1 ................................. Epimeria morronei

13. Pleonites laterally smooth........................................................... Epimeria sophie sp. nov.

- Pleonites laterally bearing several projections.................................................. Epimeria ashleyi