Taxonomic revision of the genus Paramunida Baba, 1988 (Crustacea: Decapoda: Galatheidae): a morphological and molecular approach Author Cabezas, P. E. text Zootaxa 2010 2010-12-03 2712 1 60 journal article 1175­5334 Paramunida tricarinata ( Alcock, 1894 ) ( Figs. 15H , 18I ) Munida tricarinata Alcock, 1894: 324 (Andaman Sea, 205 m ); 1901: 246 (Andaman Sea and Arabian Sea off N. Maldive Atoll, 205–384 m ). — Alcock & Anderson 1895 : pl. 12, fig. 1 (no record). Paramunida tricarinata Baba 2005: 304 (key, synonymies). — Baba et al. 2008: 175 (list of occurrences). — Baba et al. 2009: 283 , figs. 260–261 ( Taiwan) . Paramunida scabra Wu et al. 1998: 145 , figs 41, 42G ( Taiwan) . — Macpherson 1993: 462 (in part) (not P. scabra ( Henderson, 1885 )) . Dubious identity: Munida tricarinata Laurie 1926: 138 (Providence and Saya De Malha Bank, 281– 275 m ). — Tirmizi 1966: 202 , fig. 21 ( Zanzibar and Maldives , 183–457 m ). Paramunida tricarinata . — Baba 1990: 968 , fig. 15b ( Madagascar , 308–444 m ). — Macpherson 1993: 469 , fig. 11 ( Maldives Islands and Madagascar , 238–428 m ). Material examined. Taiwan . Dashi fishing port (no depth recorded), Yilan County , 05 August 1982 : 1 M 8.0 mm. — 09 September 1989 : 1 ov. F 7.0 mm, 2 F 8.3–8.5 mm . — 03 March 1991 : 1 M 8.4 mm , 2 ov. F 7.9–8.1 mm , 1 F 5.2 mm . — 19 April 1995 : 1 M 9.1 mm , 1 ov. F 9.1 mm . — 13 June 1995 : 1 M 8.9 mm . — 09 November 1995 : 4 M 10.2–12.7 mm , 2 F 10.4–12.7 mm . — 28 January 1997 : 1 M 9.6 mm . — 01 September 1997 : 1 ov. F 9.8 mm . — 23 September 1997 : 1 M 9.8 mm , 1 ov. F 9.5 mm . — 30 October 1997 : 1 ov. F 10.1 mm. — 18 November 1997 : 1 M 8.6 mm . — 05 December 1997 : 1 M 10.1 mm , 1 ov. F 8.9 mm . — 26 January 1999 : 1 M 9.0 mm. — 23 March 1999 : 1 M 9.8 mm . — 09 December 2003 : 1 F 11.5 mm . — 16 December 2004 : 6 M 10.8–11.6 mm , 1 ov. F 11.4 mm . FIGURE 18. Left antennule and antenna, ventral view. A, Paramunida pronoe , NORFOLK 1, Stn CP1670, ovigerous female 8.3 mm. B, P. proxima , SALOMON 1, CP1831, male 11.6 mm. C, P.salai , SALOMON 1, Stn CP1831, male 11.0 mm. D, P. scabra , KARUBAR, Stn 86, male 10.4 mm. E, P. setigera , MUSORSTOM 3, Stn 139, male 10.3 mm. F, P. spatula , BENTHAUS, Stn DW1897 , holotype, male 9.4 mm (from Macpherson, 2006 ). G, P. stichas , HALIPRO 1, Stn CP877, ovigerous female 11.0 mm. H, P. thalie , EBISCO, Stn CP2632 , male 8.8 mm. I, P. tricarinata , MUSORSTOM 2, Stn 35, male 9.0 mm. Philippines . MUSORSTOM 2. Stn 31, 13°40'N , 120°54'E , 24 November 1980 , 204– 230 m : 5 M 8.7–11.6 mm , 2 ov. F 8.5–9.0 mm (MNHN-Ga3430). — Stn 35, 13°28'N , 121°12'E , 160–198 m : 2 M 7.7–9.0 mm, 3 ov. F 9.0– 9.6 mm , 1 F 7.3 mm (MNHN-Ga3431) . Diagnosis. Rostrum spiniform, 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 row of 3 well-developed spines. Cardiac region with 3 or 4 well-developed spines. Tufts of long and dense setae setae along anterior branch of cervical groove. Sternal plastron with numerous striae on sternites 4–7. Lateral margin of antennular segment 1 with distal slender portion about half as long as proximal inflated portion. Antennal peduncle with anterior prolongation of antennal segment 1 spiniform; segment 2 slightly longer than broad, with distomesial spine spiniform, slightly overreaching end of antennal peduncle, distolateral spine not reaching end of segment 3; segment 3 1.4 times longer than broad. Base of P1 carpus without bundle of setae. P2 propodus about 9 times as long as wide, and 1.2–1.4 times dactylus length. Remarks. Paramunida tricarinata is very similar to P. crinita n. sp. , from the Philippines , and P. ascella n. sp. , from Vanuatu . P. tricarinata can be differentiated from P. crinita by the following characters: — A row of 3 or 4 distinct spines instead of 1 (rarely 2) well-developed spines. — The distomesial spine of the antennal segment 2 overreaches instead of never reaching the end of the antennal peduncle. P. tricarinata is easily distinguished from P.ascella by the following aspects: — Rostrum is spiniform rather than triangular. — The distomesial spine of the antennal segment 2 is spiniform instead of mucronated. Furthermore, this spine distinctly overreaches the antennal peduncle in P. tricarinata , whereas the spine never exceeds this peduncle in P. ascella . The genetic divergences between P. tricarinata and the other two species were: P. crinita 1.13% (16S rRNA) and 2.06% (ND1), and P.ascella 1.41% (16S rRNA) and 2.19% (ND1). Paramunida tricarinata is also closely related to P. marionis n. sp. from Madagascar , and they can be differentiated by the following characters: — P. marionis has a very spiny gastric region with well developed spines, whereas in P. tricarinata the spines are fewer and smaller in size. — The distolateral spine of the antennal segment 2 never reachs the end of the antennal segment 3 in P. tricarinata , whereas this spine slightly overreaches the end of the third segment in P. marionis . The occurrences of P. tricarinata along the western Indian Ocean (coast of Africa, Madagascar , Arabian Sea) (e.g. Laurie 1926 ; Tirmizi 1966 ; Baba 1990 ) should be considered with caution. Most of Paramunida species show restricted geographic ranges so it is not unlikely that such records may correspond to the new species described herein ( P. marionis and P. mozambica ), which are morphologically very close related to P. tricarinata . Therefore, a careful comparison would be desirable in order to confirm their identity. Distribution. Arabian Sea, Maldives Islands, Andaman Sea, Taiwan and Philippines , between 205 and 384 m . The occurrences in other localities require confirmation (see above).