A new species of the genus Nihonotrypaea Manning & Tamaki, 1998 (Crustacea, Decapoda, Axiidea, Callianassidae) from the South China Sea

A new species of the genus Nihonotrypaea Manning & Tamaki, 1998, N. hainanensis sp. n., collected from the South China Sea, is described and illustrated. It is distinguishable from N. harmandi (Bouvier, 1901), N. japonica (Ortmann, 1891), N. thermophila Lin, Komai & Chan, 2007 and N. makarovi Martin, 2013 by having the elongated carpus of the male and female major cheliped. The new species is distinguishable from N. petalura (Stimpson, 1860) by the proximolower margin of the carpus of the male major cheliped bearing several small denticles