Key to Western Australian Bubocorophiina

For quick comparison of Rhinoecetes species see Figs 1–2

1. Uropod 2 absent (Fig. 22 us).......................................................... Sinoecetes reni sp. nov.

- Uropod 2 present with 1 ramus.......................................................................... 2

2. Rostrum absent; pseudorostrum present on frons........................................ Cephaloecetes enigmaticus

- Rostrum present....................................................................................... 3

3. Rostrum split into two acute points (Fig. 23 cdv)............................. Pararhinoecetes bicornis gen. et sp. nov.

- Rostrum straight or curved, pointed....................................................................... 4

4. Maxilla 1 palp of single article (Fig. 19, mx1 plp).................................... Borneoecetes minimus sp. nov.

- Maxilla 1 palp of two articles............................................................................ 5

5. Uropod 1 peduncle dorsal surface with 1 to a few simple setae.................................................. 6

- Uropod 1 peduncle dorsal surface with robust setae........................................................... 7

6. Coxal plates and pereopods sparsely setose with short setae (Figs 1 and 3); uropod 2 ramus reaching to distal margin of uropod 1 peduncle.............................................................. Rhinoecetes sinuduopopulus sp. nov.

- Long coxal plate and pereopodal setae forming dense lateral network (Figs 1 and 7); uropod 2 ramus reaching to distal 4/5 of uropod 1 peduncle........................................................ Rhinoecetes makritrichoma sp. nov.

7. Uropod 1 peduncle dorsal surface with row of 4–7+ robust setae (e.g. Fig. 6 us).................................... 8

- Uropod 1 peduncle dorsal surface with a few (up to 3) robust setae and occasional simple setae....................... 10

8. Uropod 1 peduncle distoventrally with coarsely dentate corona (e.g. Fig. 6 up ped 1).......................................................................................................... Rhinoecetes rockinghamia sp. nov.

- Uropod 1 peduncle distoventrally with finely fimbriate corona (e.g. Fig. 7 up1 vv).................................. 9

9. Eye lobes truncate in lateral view, acutely pointed in dorsal view (Fig. 9 clv, cdv). Pereopods 3–6 sparsely setose. Uropod 2 peduncle with mid-dorsal simple seta; ramus with 2 lateral and 1 or 2 apical simple setae adjacent to terminal robust seta................................................................................... Rhinoecetes lowryi sp. nov.

- Eye lobes rounded in lateral and dorsal view (Fig. 15 clv, cdv). Pereopods 3–4 basis and merus anterior margins with long densely set setae; pereopods 5–6 basis with groups of very long anterodistal setae. Uropod 2 peduncle and ramus without simple setae...................................................................... Rhinoecetes wamus sp. nov.

10. Uropod 1 peduncle dorsal surface with 1 robust seta and a few simple setae (Fig. 13 us); ramus uropod 2 reaching apex of uropod 1 peduncle.............................................................. Rhinoecetes karkharius sp. nov.

- Uropod 1 peduncle dorsal surface with 2–3 robust setae and occasional simple setae................................ 11

11. Rostrum curved; eyelobes broadly rounded (Fig. 11 clv). Male antenna 2 articles 4 and 5 sparsely setose (Fig. 11). Uropod 2 ramus reaching 2/3 along inner ramus uropod 1......................................... Rhinoecetes caetus sp. nov.

- Rostrum straight; eyelobes broad, apically rounded truncate (Fig. 17 clv). Male antenna 2 articles 4 and 5 densely setose (Fig. 17). Uropod 2 ramus reaching 1/3 along inner ramus.................................... Rhinoecetes setosus sp. nov.