Austinograea, HESSLER & MARTIN, 1989

Guinot, Danièle & Segonzac, Michel, 2018, A review of the brachyuran deep-sea vent community of the western Pacific, with two new species of Austinograea Hessler & Martin, 1989 (Crustacea, Decapoda, Brachyura, Bythograeidae) from the Lau and North Fiji Back-Arc Basins, Zoosystema 40 (5), pp. 75-107 : 96

KEY TO SPECIES OF AUSTINOGRAEA HESSLER & MARTIN, 1989

A key to the five species of Austinograea is provided, based on chelae, in order to potentially identify the crabs photographed in situ by evaluating the videos of the dives on board or later by examining the photographs.

1. Palm chela with outer surface devoid of coloured spot and inner surface without patches of setae. Subhepatic region of carapace glabrous ....................................................................... Austinograea alayseae Guinot, 1990

— Palm chela with outer surface bearing one spot ........................................................................................... 2

— Palm chela with outer surface bearing two coloured spots in males, inner surface with patches of setae. Subhepatic region of carapace with patches of setae ....................................................... Austinograea hourdezi n. sp.

2. One spot near base of fixed finger .......................................................................... Austinograea jolliveti n. sp.

— One spot near base of dactylus .................................................................................................................... 3

3. Palm chela with inner surface covered by patches of setae; small patch of setae on thoracic sternum at level of P1, especially in females ........................................................ Austinograea williamsi Hessler & Martin, 1989

— Palm chela with inner surface only setose on dactylus near occluding margin and on propodus near base of dactylus; no setae on thoracic sternum at level of P 1 in both sexes .................................................................. .............................................................................. Austinograea rodriguezensis Tsuchida & Hashimoto, 2002