Scalopidia indica, Ng, Peter K. L. & Castro, Peter, 2013

Ng, Peter K. L. & Castro, Peter, 2013, On the genus Scalopidia Stimpson, 1858 (Crustacea: Brachyura: Goneplacoidea: Scalopidiidae), with the description of one new genus and three new species, Zootaxa 3731 (1) : -

publication ID	https://doi.org/ 10.11646/zootaxa.3731.1.2
publication LSID	lsid:zoobank.org:pub:ECD3423E-FB05-4783-A08A-64EF16C1A57F
DOI	https://doi.org/10.5281/zenodo.6152193
persistent identifier	https://treatment.plazi.org/id/F5548796-1D4B-D860-59BA-B84DFD8ED24D
treatment provided by	Plazi
scientific name	Scalopidia indica
status	sp. nov.

Treatment

Scalopidia indica View in CoL n. sp.

( Figs. 2 View FIGURE 2 E, F, 5B, 6B, 7E–F, 8C, 9C, D, 10B, 11C, D, 12E–H)

Scalopidia spinosipes .—Henderson 1893: 379.—Alcock 1900: 325.—Laurie 1906: 424.—Chopra 1935: 513.—Davie et al. 2002: 332.—Guinot et al. 2013: 118, 294 (part).

Material examined. Holotype —male (15.3× 21.7 mm) (ZRC 1999.0136a), Andaman Sea, Pichai Fish Port, Phuket, western Thailand, coll. trawlers, P.K.L. Ng, April 1999.

Paratypes — Thailand: 1 male (11.1× 15.4 mm) (ZRC 1999.0136b), same data as holotype.— 1 male (16.3× 22.6 mm) (ZRC 1999.212), Andaman Sea, Pichai Fish Port, Phuket, coll. trawlers, P.K.L. Ng, April 1999. Peninsular Malaysia: 1 female (10.0× 13.1 mm) (ZRC 1992.10459–10461), Penang, Langkawi.— 1 male (9.7× 13.2 mm), 2 females (10.7× 13.7 mm, 10.0× 13.1 mm) (ZRC 1992.10459–10461), Andaman Sea, between Penang and Langkawi, trawl, coll. C.P. How & C.O. Lau, 12 November 1991.— 1 female (13.1× 17.8 mm) (ZRC 1993.261), Andaman Sea, Batu Maung, Penang, coll. trawlers, H.R. Singh, 20 September 1982.

Diagnosis. Carapace subovate, lateral margins convex ( Fig. 2 View FIGURE 2 E, F); dorsal surface uneven with regions of different convexities ( Figs. 2 View FIGURE 2 E, F, 5B); cornea with pigmentation in centre ( Fig. 5 View FIGURE 5 B); cheliped carpus with long sharp tooth on inner dorsal angle, distal margin very finely granular or almost smooth; P2 merus dorsal margin with sharp granules and/or short spines, ventral margin with row of sharp spines ( Fig. 2 View FIGURE 2 E, F); P2 carpus unarmed ( Fig. 2 View FIGURE 2 E, F); P2 propodus with row of spines on dorsal margin ( Fig. 2 View FIGURE 2 E, F); P3, P4 dorsal margin with strong spines, ventral margin with 2 rows of sharp spines ( Fig. 2 View FIGURE 2 E, F); P3, P4 carpus each with rows of strong spines on dorsal margin, with low subdorsal ridge; P3, P4 propodus each with strong spines on dorsal, ventral margins ( Fig. 2 View FIGURE 2 E, F); P5 merus with strong spines on dorsal margin, ventral margin with numerous strong spines on proximal half of ventral margin ( Figs. 2 View FIGURE 2 E, F, 8C); surface of thoracic sternum distinctly mostly smooth or pitted, surface near sternoabdominal cavity with low, flattened granules ( Fig. 9 View FIGURE 9 C, D); episternite 7 as tranversely elongated, subrectangular plate ( Fig. 9 View FIGURE 9 D); male abdominal somite 6 slightly wider than long ( Figs. 9 View FIGURE 9 C, 10C); G1 distal part elongated, tip prominently open distally, distinctly flared ( Fig. 12 View FIGURE 12 E–G).

Etymology. The species name alludes to the species occurrence in the Indian Ocean.

Remarks. Records of Scalopidia spinosipes from Gulf of Manaar, Sri Lanka (Laurie 1906), Gulf of Martaban, India (Henderson 1893), Sandheads in the Bay in Bengal (Chopra 1935), Calcutta, India (Guinot et al. 2013) and Andaman Sea, Phuket (Davie et al. 2002) should be referred to this new species (see discussion for genus).

Scalopidia spectabilis n. sp.

( Figs. 2 View FIGURE 2 I, 5C, 6C, 7G, H, 8D, 9E, F, 10D, 13A–D, 14B)

Material examined. Holotype— male (11.5× 16.6 mm) (MNHN-IU-2013-507), station PS 14, 4– 5 m depth, Admosin Island, 5°05.1’S 145°48’E, Madang, Papua New Guinea, coll. Expedition PAPUA NUIGINI, 16 November 2012 Diagnosis. Carapace subovate, lateral margins gently convex with posterolateral sides subparallel ( Fig. 2 View FIGURE 2 I); dorsal surface uneven with regions of different convexity ( Figs. 2 View FIGURE 2 I, 5C); cornea entirely pigmented ( Fig. 5 View FIGURE 5 C); cheliped carpus with long sharp tooth on inner dorsal angle, distal margin very finely granular or almost smooth; P2 merus dorsal margin with sharp granules, ventral margin with row of strong spines ( Fig. 2 View FIGURE 2 I); P2–5 carpus, propodus dorsal margins without spines, dorsal margins, subdorsal ridges of carpi of P3, 4 lined with very low granules; P5 merus dorsal margin unarmed, ventral margin with 2 or 3 short spines on proximal half ( Figs. 2 View FIGURE 2 I, F, 8D); surface of thoracic sternum granular, those near sterno-abdominal cavity relatively larger ( Fig. 9 View FIGURE 9 E, F); episternite 7 as tranversely elongated triangular plate ( Fig. 9 View FIGURE 9 F); male abdominal somite 6 as wide as long, anterodistal angles prominently dilated ( Figs. 9 View FIGURE 9 E, 10D); G1 distal part elongated, tip prominently open laterally ( Fig. 13 View FIGURE 13 A–C).

Etymology. The species is named after its relatively colorful carapace when compared with congeners ( Fig. 14 View FIGURE 14 B).

Remarks. The species is diagnostic in characters discussed earlier (see Remarks for genus). Scalopidia spectabilis n. sp. also differs from congeners in that the anterodistal angles of male abdominal somite 6 are relatively more dilated ( Fig. 10 View FIGURE 10 D).