The Red Sea species of Cymo de Haan, 1833 (Decapoda, Brachyura, Xanthidae), associates of scleractinian corals Author Brösing, Andreas Author Al-Aidaroos, Ali M. Author Türkay, Michael text Zootaxa 2014 3779 2 195 214 journal article 46223 10.11646/zootaxa.3779.2.5 bdf4a112-3306-4082-bd8e-bc44aa82ed65 1175-5326 251073 98D08549-691E-4B64-A19F-D2A67F4FCCFA Key to Red Sea species of Cymo 1. Frontal margin lined with coarse, blunt granules of irregular sizes; dorsal surface of carapace, cheliped carpus and palm with similarly shaped granules usually in clusters; front appears quadrilobed ( Fig.14 D)..................... C. quadrilobatus - Frontal margin and chelipeds with pointed spines, front bilobed................................................. 2 2. Carapace of nearly circular shape, frontal margin with bifurcated spines, fingers of cheliped of white or black colour...... 3 - Carapace slightly longer than wide, frontal margin with relatively longer frontal spines than in the other three species ( Fig. 14 B); fingers of chelipeds of gray or pale colour.................................................. C. deplanatus 3. Frontal margin with two bifurcated spines on each lobe ( Fig. 14 A), entire chelipeds..................... C. andreossyi - Frontal margin with one bifurcated spine on each lobe ( Fig.14 C), fingers of larger cheliped black but distally white, black col- ouration on pollex extending onto male palm................................................. C. melanodactylus