Caribboecetina

1. Rostrum bifid; eyes on lateral surface of head, not on projecting eyelobes; article 2 of mandible palp longer than wide at base; inner ramus of uropod 1 about as long as outer, cylindrical............................... Concholestes Giles, 1888

- Rostrum normal or absent; eyes on projecting lobes; article 2 of mandible palp vestigial or absent; inner ramus of uropod 1 at most half length of outer, flattened........................................................................ 2

2. Uropod 3 without ramus............................................................................... 3

- Uropod 3 with articulating ramus........................................... Africoecetes armatus (Griffiths, 1974)

3. Pereopods 5–7 without accessory claw.................................................................... 4

- Pereopods 5–7 with accessory claw.......................................... Polynesoecetes kekeae Myers, 1989

4. Ocular field of eye lobes inflated; inner lobes of lower lip complexly lobate (Fig. 4 C); basis of pereopod 7 lateral surface with vertical row of long setae in middle (Fig. 4 E 1)............................................................. 5

- Ocular field of eye lobes not inflated; inner lobes of lower lip simple (Fig. 4 D); basis of pereopod 7 lateral surface without row of long setae in middle (Fig. 4 E 2)................................................... Caribboecetes Just,1983 J

5. Mandible palp 2-articulate, barely reaching beyond apex of incisor (Fig. 2 2a); male antenna 2 at most as long as head and pereon combined............................................................... Ambicholestes Just, 1998 K

- Mandible palp 1-articulate, pointed, overreaching incisor with at least 1/3 palp length (Fig. 2 2b); male antenna 2 at least as long as head, pereon and pleon combined............................................. Australolestes Just, 2011 L