A new species of trogloplacine crab of the genus Australocarcinus Davie, 1988 from a freshwater stream in Mahé, Seychelles (Crustacea, Brachyura, Chasmocarcinidae)

Australocarcinus insperatus sp. n., left G1 and G2; holotype male (10.7 × 8.6 mm) (ZRC 2017.1072), Seychelles. A ventral view B ventral view C distal part (ventral view) D distal part (dorsal view) E ventral view F area between basal and distal segments. Scale bars 0.50 mm (A, B, E); 0.25 mm (C, D, F).