New western Pacific records of Homolidae De Haan, 1839, with descriptions of new species of Homolochunia Doflein, 1904, and Latreillopsis Henderson, 1888 (Crustacea: Decapoda: Brachyura) Author Forges, Bertrand Richer De Institut de Recherche pour le Développement, BPA 5, Nouméa cedex, New Caledonia. E-mail: richer @ noumea. ird. nc Tropical Marine Science Institute and Department of Biological Sciences, National University of Singapore, Kent Ridge, Singapore 119260, Republic of Singapore. E-mail: peterng @ nus. edu. sg Author Ng, Peter K. L. text Zootaxa 2008 2008-12-19 1967 1 35 journal article 1175­5334 Homolomannia sibogae Ihle, 1912 ( Figs. 9A–C , 10A–C ) Homolomannia sibogae Ihle, 1912: 208 ; 1913: 69 , pl. 3, fig. 16–18. — Serène & Vadon 1981: 121 . — Guinot & Richer de Forges 1981: 555 . — Guinot & Richer de Forges 1995: 460 , fig. 63b. — Tan et al. 2000: 183 . — Ng et al. 2001: 6 . — Richer de Forges & Ng 2007: 41 , fig. 8C, D. — Takeda & Manuel-Santos 2007: 88 , fig. 9C. — Ng et al. 2008: 40 . Material examined. Solomon Islands : SALOMONBOA cruise, stn. CP 2828, 10°27.40’S 161°58.76’E , 173–379 m , 20 September 2007 : 1 female (16.6 x 12.8 mm ) ( MNHN-B31284 ).— Stn. CP 2830, 10°46.31’S 162°19.99’E , 264–314 m , 21 September 2007 : 1 male (15.0 x 11.4 mm ) ( ZRC 2008.0981 ).— Stn. DW 2804 , 9°14.81’ S 161°20.96’ E , 150–175 m , 17 September 2007 : 1 female (11.4 x 8.3 mm ) ( MNHN-B31285 ). Philippines : PANGLAO 2004, stn. P2, 20 June 2004 : 1 male (25.8 x 19.7 mm ) (NMCR). – AURORA 2007, stn. CP 2656 , 16°02.8’ N 121°52.8’ E , 262–278 m , 20 May 2007 : 1 male (14.1 x 11.3 mm ), 1 female (18.6 x 13.7 mm ) (NMCR). – Stn. CP 2667 , 15°55.64’N 121°46.6’E , 292–307 m , 21 May 2007 : 1 female 11.6 x 8.3 mm ( ZRC 2008.0982 ).— Stn. CP 2708 , 15°07.1’N 121°37.9’E , 307–309 m , 28 May 2007 : 1 male (15.6 x 11.3 mm ) (NMCR).— Stn. CC 2743 , 16°01.3’N 121°51.1’E , 302–309 m , 2 June 2007 : 1 female (25.8 x 19.5 mm ) ( MNHN-B31286 ). Vanuatu : Espiritu Santo I., SANTO 2006, stn. AT 8 , 15°40.5’S 167°01.4’E , 366–389 m , 17 September 2006 : 1 female (8.6 x 6.3 mm ) ( MNHN-B31287 ).— Stn. AT 11 , 15°39.5’S 167°01.5’E , 272–286 m , 17 September 2006 : 1 female (17.0 x 13.1 mm ) ( ZRC 2008.0983 ). – Stn. AT 18 , 15°41.3’S 167°02.6’E , 321–336 m , 21 September 2006 : 1 male (14.3 x 10.6 mm ), 1 female (17.2 x 12.9 mm ) (MNHN- B31288).— Stn. AT 19 , 15°33.94’S 167°00.5’E , 503–600 m , 21 September 2006 : 1 badly damaged female ( MNHN-B31289 ).— Stn. AT 28 , 15°23.6’S 167°16.1’E , 342–350 m , 23 September 2006 : 1 male (16.9 x 12.7 mm , photographed) ( ZRC 2008.0984 ). Taiwan : Kaohsiung County , Tongkuang fishing port: 1 ovigerous female (35.3 x 26.2 mm ) ( ZRC 2000.2622 ). – Tungkang fishing port, 22 January 1996 , 50 m: 1 ovigerous female (32.2 x FIGURE 8. H. menezi n. sp. , male holotype (17.4 x 12.3 mm) (MNHN-B31283), Solomon Islands. Left G1. A: dorsal view; B: ventral view. Scales = 1.0 mm. FIGURE 9. Homolomannia sibogae , general views. A, male (27.6 x 19.5 mm) (ZRC 1999.0714), Taiwan; B, male (17.3 x 12.3 mm) (ZRC 1999.0714), Taiwan; C, female (17.0 x 13.1 mm) (ZRC 2008.0983), Vanuatu. FIGURE 10. Homolomannia sibogae , dorsal views of carapaces. A, male (27.6 x 19.5 mm) (ZRC 1999.0714), Taiwan; B, male (17.3 x 12.3 mm) (ZRC 1999.0714), Taiwan; C, female (17.0 x 13.1 mm) (ZRC 2008.0983), Vanuatu. 22.5 mm ) (ZRC 2008.0698). – Tungkang fishing port, 5 January 1999 : 3 males (17.3 x 12.3 mm , 20.4 x 15.3 mm , 27.6 x 19.5 mm ), 1 ovigerous female (34.4 x 25.6 mm ) (ZRC 1999.0714). Remarks . Homolomannia sibogae was described from Indonesia ( Ihle 1912 ) and later reported from Japan ( Sakai 1935 ), Taiwan ( Tan et al. 2000 ) and the Philippines ( Guinot & Richer de Forges 1995 ; Takeda & Manuel 2007; Richer de Forges & Ng 2007 ). Some small specimens examined by Guinot and Richer de Forges (1995) from New Caledonia were tentatively referred to Homolomannia aff. sibogae . As discussed by Guinot and Richer de Forges (1995) with regards to specimens from New Caledonia , specimens from Vanuatu also differ from typical H. sibogae from the Philippines and Taiwan in the following aspects: all are relatively small (ca. 17.0 mm carapace length) but adults ( H. sibogae is a larger-size species, with specimens 40.7 mm in carapace length still immature); the carapace is more quadrangular with the branchial area relatively less inflated laterally; and the strong hepatic spine is directed anteriorly (directed more obliquely in H. sibogae ). While these differences suggest two separate species, we prefer to have a larger series of specimens from New Caledonia and Vanuatu to better understand the extent of the variation before a decision is made. Interestingly, the bathymetric range of Homolomannia aff. sibogae from Vanuatu is from relatively shallower depths ( 173 to 600 m ) than those known thus far for H. sibogae from elsewhere. Material from the Philippines has been recorded from depths of between 204–1258 m ) ( Guinot & Richer de Forges 1995 ; Richer de Forges & Ng 2007 ). The single record of 50 m from southern Taiwan (ZRC 2008.0698) is an error as the collections from there were all from depths exceeding 200 m depth.