Pontonides Borradaile, 1917

Marin, Ivan, 2007, The coral-associated shrimp genus Pontonides (Caridea, Palaemonidae, Pontoniinae) in Nhatrang Bay, Vietnam, with description of two new species, Zootaxa 1635, pp. 1-21 : 17-18

Key to known species of Pontonides Borradaile, 1917

1. Rostrum short, not reaching beyond mid-length of basal antennular segment. Supraorbital carina reaching almost to tip of rostrum (except in P. ankeri sp. n.), with angular distal margin ........................................ 2

- Rostrum long, reaching beyond mid-length of basal antennular segment. Supraorbital carina reaching to mid-length of rostrum, with straight or oval distal margin.......................................................................... 6

2. Lateral margin of supraorbital carina convex ........................................... P. maldivensis (Borradaile, 1915) (associated with dendrophylliid corals, Tubastre a; Kenya, Maldives, Vietnam, Japan and Hawaii, 10–15 m).

- Lateral margin of supraorbital carina rectangular........................................................................................ 3

3. Carapace not gibbous, with areolate surface. Eyestalk with dorsal tubercle............................................... 4

- Carapace gibbous (especially in females), with non-areolate surface. Eyestalk without dorsal tubercle....5

4. Uropodal exopod without distolateral tooth. Palp of first maxilliped reduced ......... P. sibogae Bruce, 2005 (associated with dendrophylliid corals, Dendrophyllia ; West Pacific: Indonesia and Japan; 54–72 m)

- Uropodal exopod with distolateral tooth. Palp of first maxilliped vestigial.................................................. .......................................................................................................... P. sympathes Ridder & Holthuis, 1979 (associated with the black coral Antipathes galapagensis ; E Pacific: Galapagos Islands, Clipperton Island; 8–23 m)

5. Supraorbital carinae continuing to tip of rostrum; distal part of rostrum short ........ P. loloata Bruce, 2005 (associated with black corals, Cirripathes spp.; West Pacific: Papua New Guinea and Japan; 5–25 m)

- Supraorbital carinae continuing to mid-length of rostrum; distal part of rostrum long, especially in males. ............................................................................................................................................... P. ankeri n. sp. (associated with black corals, Cirripathes spp.; Indo-West Pacific: Seychelles, Indonesia, Philippines, Vietnam, Japan, French Polynesia, Hawaii, 10–35 m)

6. Pleuron of fifth abdominal segment rounded. Second maxilliped without fusiform setae on ischium ........ ............................................................................................................................................ P. tatianae n. sp. (associated with bushy black corals, Rhipidipathes sp.; West Pacific: Vietnam; 40–45 meters)

- Pleuron of fifth abdominal pointed. Second maxilliped with fusiform setae on ischium ........................... 7

7. Proximal margin of eyestalk concealed by supraocular eave ............................ P. asperulatus Bruce, 2005 (associated with black corals, Cirripathes spp.; Indo-West Pacific: Madagascar, Vietnam, Papua New Guinea; 15–25 m)

- Proximal margin of eyestalk exposed ..................................................................... P. unciger Calman, 1939 (associated with bushy black corals, Rhipidipathes sp. and possibly Antipathes sp.; Indo-West Pacific: Red Sea, Kenya, Marquesas Is., Vietnam; 40–50 meters)