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 Microtopsis 1. Dorsal surface of carapace relatively smooth ( Fig. 18 A). Anterior part of lateral carapace margin with low granules ( Fig. 18 A). Male telson relatively semicircular ( Fig. 80 B). G1 is proportionately short, median twist weakly pronounced, tip gently hooked ( Fig. 81 A‒E) [Japan]........................................................................... M. takedai - Dorsal surface of carapace covered with distinct small granules ( Fig. 18 B, C). Anterior part of lateral carapace margin with short spiniform granules ( Fig. 18 B, C). Male telson triangular in shape ( Fig. 80 F). G1 proportionately long, with strong median twist, tip distinctly hook-shaped ( Fig. 81 G‒L) [Indonesia].......................................... M. teschi n. sp.