Pkl. Ng et al., Taxonomic notes on three Indo-West Pacific species of Calappa (Decapoda : Brachyura : Calappidae), RAFFL B ZOO, 47(2), 1999, pp. 607-616
The nomenclature of the Chinese calappid crab, Calappa undulata Dai & Yang,
1991, is clarified. Calappa quadrimaculata Takeda & Shikatani, 1990, recen
tly synonymised with C. lophos (Herbst, 1782), is shown to be a valid speci
es, easily distinguished by various carapace and male abdominal features as
well as the live coloration of adults.