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 genera of Megaesthesiinae 1. G2 long, exceeding G1 length; basal, distal segments long ( Fig. 82 C, F, M)............................ Megaesthesius - G2 short, about 2/3 length of G1; basal segment short, distal segment spatuliform with short elongation ( Fig. 83 C)............................................................................................. Alainthesius n. gen.