Alcomaja miriky Ng & Forges 2015, n. sp.

Alcomaja miriky n. sp. (Figs. 17E, 20O–Q, 36O, 45H, 49G, 69B) Material examined. Holotype male (26.4 × 20.9 mm) (MNHN-IU-2010-929), station DW 3215, 12°32’S 47°54’E, 314–433 m, Madagascar, coll. MIRIKY, 30 June 2009. Paratype: Madagascar – 1 male (17.3 × 12.7 mm) (ZRC 2013.1409, ex MNHN-IU-2010-60), station CP 3284, 14°51’S 46°59’E, 236–297 m, coll. MIRIKY, 13 July 2009. Diagnosis. Carapace elongated, pyriform; dorsal surface of carapace and ambulatory legs covered with short, hooked setae; with small rounded granules (Fig. 17E). Pseudorostral spines relatively long, curved, with rounded cross-section (Fig. 36O). Antorbital spine almost straight; intercalated spine acutely triangular; postocular spine very long; 1 distinct hepatic spine (Fig. 36O). Lateral and branchial spines strong in juveniles and adults (Fig. 17E). Subhepatic region with rugose, weakly granulated surface. Basal antennal article with low granules and 2 tubercles, with 2 relatively long distal spines. Ischium of third maxilliped almost smooth to slightly rugose (Fig. 45H). Ambulatory legs relatively short, first leg never twice length of carapace; surfaces distinctly setose (Fig. 17E). G1 gently curved with distal part gently curved downwards (Fig. 20O–Q). Etymology. The species is named after the cruise that collected it, MIRIKY. The name is used as a noun in apposition. Remarks. Alcomaja miriky n. sp. is very close to A. nagashimaensis (T. Sakai, 1969). The main differences are as follow: the G1 of A. miriky is prominently less curved (Fig. 20O–Q versus Fig. 20A–J); the distal spines of the basal antennal article in A. miriky are relatively longer and sharper; the overall carapace is proportionately longer (Fig. 17E versus Fig. 17A–C); there is only one hepatic spine in A. miriky versus two in A. nagashimaensis (Figs. 17E, 36O versus Figs. 17A–C, 36M); there is one accessory spine on the postorbital spine in A. miriky which is absent in A. nagashimaensis (Figs. 17E, 36O versus Figs. 17A–C, 36M); and the pseudorostral spines of A. miriky are relatively longer and more curved (Figs. 17E, 36O versus Figs. 17A–C, 36M). Published as part of Ng, Peter K. L. & Forges, Bertrand Richer De, 2015, Revision of the spider crab genus Maja Lamarck, 1801 (Crustacea: Brachyura: Majoidea: Majidae), with descriptions of seven new genera and 17 new species from the Atlantic and Indo-West Pacific, pp. 110-225 in Raffles Bulletin of Zoology 63 on pages 152-154, DOI: 10.5281/zenodo.5384590