Revision of the family Chasmocarcinidae Serène, 1964 (Crustacea, Brachyura, Goneplacoidea) Author Ng, Peter K. L. Author Castro, Peter text Zootaxa 2016 4209 1 1 182 journal article 37321 10.11646/zootaxa.4209.1.1 2de5b7bf-3975-458a-b200-07ec69f4e013 1175-5326 272646 849BAB5C-464A-4B4A-A586-5742411EDC01 Key to species of Alainthesius n. gen. 1. Dorsal surface of carapace almost smooth ( Figs. 20 C, D; 27D). G1 conspicuously short, stout ( Fig. 83 A, B) [ Madagascar ]......................................................................................... A. signatus n. sp. - Dorsal surface of carapace covered with small flattened granules ( Figs. 20 E–H; 27E, F). G1 relatively slender, with distal half elongated ( Fig. 83 D–G) [Papua New Guinea; New Caledonia; Fiji]................................ A. bertrandi n. sp.