Deep-sea spider crabs of the family Epialtidae MacLeay, 1838, from Papua New Guinea, with a redefinition of Tunepugettia Ng, Komai & Sato, 2017, and descriptions of two new genera (Crustacea: Decapoda: Brachyura: Majoidea) Author Lee, Bee Yan Author Forges, Bertrand Richer De Author Ng, Peter K. L. text Zootaxa 2019 2019-06-18 4619 1 1 44 journal article 26462 10.11646/zootaxa.4619.1.1 9aaf6711-748d-4067-a759-26d37802b7fc 1175-5326 3248363 CA6AEB18-2F97-449C-AE34-E1509DFFC841 Crocydocinus vanuatu n. sp. ( Figs. 14C , 16C , 17G , 19 E–H) Rochinia aff. brevirostris — Richer de Forges & Ng 2013: 473 , fig. 4A [not Hyastenus brevirostris Doflein, 1904 ]. Material examined. Holotype : male (16.0 × 11.0 mm) ( ZRC 2011.1047 ), stn AT89, Big Bay , Espiritu Santo Island , Vanuatu , 630– 583 m , coll. SANTO 2006 Expedition , 13 October 2006 . Diagnosis. Carapace pyriform, covered with thick layer of setae, surface smooth when denuded ( Fig. 14C ). Pseudorostral spines straight, thick, short, diverging, V-shaped. Supraorbital eave fused to carapace; pre-orbital angle blunt; postorbital lobe cup-like, fused with hepatic spine, base swollen. Carapace with regions defined; gastric region swollen; epibranchial region slight swell; posterior region with small granule medially ( Fig. 14C ); 3 granules along lateral margin of carapace on margin of branchial region ( Fig. 17G ). Antennal flagellum slightly longer than pseudorostral spines. Basal antennal article longer than broad, distal angle rounded. Buccal frame covered by third maxilliped. Pterygostomial region with 3 granules on outer margin ( Fig. 16C ). Chelipeds slender, covered with setae except on fingers. Ambulatory legs slender, covered with layer of setae except on dactylus; P2 longest. Male tho- racic sternum depressed anteriorly; sternites 3 and 4 with concave surface, margin constricted with curved margin ( Fig. 16C ). Male pleon broad triangular ( Fig. 16C ). G1 straight, with distal tip sharp ( Fig. 19 E–H). Etymology. The species is named after the country from which the specimen was collected from. The name is used as a noun in apposition. Remarks. Crocydocinus vanuatu n. sp. was identified as R . aff. brevirostris by Richer de Forges & Ng (2013) but they noted it differed from the Bay of Bengal specimen as illustrated by Griffin & Tranter (1986: fig. 57c) in several aspects. Comparison of the present material with the type specimen of C . brevirostris ( Doflein, 1904 ) comb. nov. ( Figs. 13B , 15B , 17B ), revealed more differences, justifying treating them as two separate species. Crocydocinus vanuatu n. sp. lacks all the distinct large granules ( Fig. 14C ) seen in C . brevirostris comb. nov. ( Fig. 13B ); has only weak lateral branchial spines ( Fig. 14C ) (versus distinct lateral branchial spines in C . brevirostris comb. nov. ; Fig. 13B ); and the basal antennal article has a straight outer margin ( Fig. 16C ) (versus basal antennal article with slightly convex outer margin in C . brevirostris comb. nov. ; Fig. 15B ). Crocydocinus vanuatu n. sp. is only known from its type locality in Vanuatu .