Austinograea chubacarc n. sp. from the Manus and Woodlark Basins (western Pacific), and new records of A. alayseae Guinot, 1990 and A. hourdezi Guinot & Segonzac, 2018 (Crustacea, Decapoda, Brachyura, Bythograeidae)
Zoosystema 47
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Collected in the Woodlark Basin and Manus Basin during the French CHUBACARC 2019 cruise, a species of the genus Austinograea Hessler & Martin, 1989 (Bythograeidae Williams, 1980) was found to be distinct from its four congeners from the western Pacific: A. williamsi Hessler & Martin, 1989, A. alayseae Guinot, 1990, A. hourdezi Guinot & Segonzac, 2018, and A. jolliveti Guinot & Segonzac, 2018. Established here as A. chubacarc n. sp., it displays an original and unique character, which is regarded as having specific importance, namely in the male a narrow depression on the upper margin of the dactylus of the major chela (but not in the female). The presence of A. chubacarc n. sp.