Paramunida echinata Macpherson, 1999

Cabezas, P. E., 2010, Taxonomic revision of the genus Paramunida Baba, 1988 (Crustacea: Decapoda: Galatheidae): a morphological and molecular approach, Zootaxa 2712, pp. 1-60 : 21-22

Paramunida echinata Macpherson, 1999

( Figs. 13A, 16G)

Paramunida echinata Macpherson, 1999: 420 , fig. 2 (Marquesas Islands, 102–430 m). — Baba 2005: 302 (key, synonymies). — Baba et al. 2008: 172 (list of occurrences).

Material examined. French Polynesia. Marquesas Islands. MUSORSTOM 9. Stn 1154, 07º58.5’S, 140º43.7’W, 23 August 1997, 102 m: 1 M 13.3 mm (holotype, MNHN-Ga4365). — Stn CP 1176, 08º45.8’S, 140º14.5’W, 25 August 1997, 260 m: 17 M 10.8–13.4 mm, 13 ov. F 10.8–12.7 mm, 1 F 9.1 mm (MNHN- Ga4367) .

Diagnosis. Rostrum triangular, larger than supraocular spines, with thin dorsal carina; margin between rostral and supraocular spines straight or slightly concave. Spinules on gastric and hepatic regions forming groups arising from scale-like striae and with few short uniramous setae. Mesogastric region with 3 welldeveloped spines. Cardiac region with 3 or 4 well-developed spines in midline. Few and short setae along anterior branch of cervical groove. Sternal plastron smooth, with some short median striae on sternite 4, and few short lateral striae on sternites 5–7. Lateral margin of antennular segment 1 with distal slender portion about half as long as proximal inflated portion. Antennal peduncle with anterior prolongation of segment 1 spiniform; segment 2 more than twice longer than broad, with distomesial spine mucronated, overreaching end of segment 3, distolateral spine not reaching end of segment 3; segment 3 1.5 times longer than broad. Base of P1 carpus without bundle of setae. P2 propodus about 10 times as long as wide, and slightly longer than dactylus.

Remarks. Paramunida echinata is related to P. labis from the Futuna and Wallis Islands, Fiji, Tonga, Chesterfield Islands, and New Caledonia (see below under Remarks for that species) and P. antares n. sp. from New Caledonia.

Paramunida echinata and P. antares can be easily distinguished by the shape of the distomesial spine of the antennal segment 2, which is slightly mucronated in P. echinata and spiniform in P. antares . The genetic divergences between P. echinata and P. antares were 2.80% (16S rRNA) and 10.92% (ND1).

Distribution. French Polynesia, Marquesas Islands, between 102 and 430 m.