A new species of the genus Calliaxina Ngoc-Ho, 2003 from the South China Sea (Crustacea, Decapoda, Axiidea, Callianassidae)

A new species of the genus Calliaxina Ngoc-Ho, 2003, C. xishaensis sp. n., collected from the South China Sea is described and illustrated. It is distinguishable from C. thomassini Ngoc-Ho, 2014 by having the rostrum broadly triangular with pointed tip and is distinguishable from C. novaebritanniae (Borradaile, 1900) and C. punica (de Saint Laurent & Manning, 1982) by the posterior margin of telson being convex. It is also the first record of this genus from the China seas. A key to the species of Calliaxina is given