Neorhynchoplax Sakai, 1938

D., Guinot & de, Mazancourt V., 2020, A new freshwater crab of the family Hymenosomatidae MacLeay, 1838 from New Caledonia (Crustacea, Decapoda, Brachyura) and an updated review of the hymenosomatid fauna of New Caledonia, European Journal of Taxonomy 671 (671), pp. 1-29 : 18

Genus Neorhynchoplax Sakai, 1938

Type species by subsequent designation by Holthuis (1968): Rhynchoplax introversus Kemp, 1917 . The genus Neorhynchoplax , the richest hymenosomatid genus, currently contains more than 30 species, all from the Indo-West Pacific ( Ng et al. 2008, 2011: 53; Hsueh 2018: table 1), with nine species described from Indian waters ( Alcock 1900; Kemp 1917; Chopra & Das 1930; Ng et al. 2011: table 2; Rahayu et al. 2020).

Several species of Neorhynchoplax are regarded as true freshwater species: N. dentata Ng, 1995 ( Sarawak, Malaysia), N. inermis Takeda & Miyake, 1971 ( Palau Islands), N. introversa ( Kemp, 1917) (Kiangsu, China), N. kempi ( Chopra & Das, 1930) (Basra, Iraq), N. prima Ng & Chuang, 1996 (Pulau Bintan, Indonesia), N. frontalis ( Lucas & Davie, 1982) (NE Queensland, Australia), N. hirtirostris ( Lucas & Davie, 1982) (NE Queensland, Australia), N. nasalis ( Kemp, 1917) (Kiangsu, China), N. pageti Pretzmann, 1975 (Madampe, Sri Lanka), N. patnahi Ng, Nesemann & Sharma, 2011 (Patna, Bihar, India), N. thorsborneorum ( Lucas & Davie, 1982) (NE Queensland, Australia), N. yaeyamaensis Naruse, Shokita & Kawahara, 2005 (Yaeyama Islands, Japan) (see Shen 1932; Chuang & Ng 1994; Ng et al. 1999, 2008, 2011; Naruse et al. 2008b; Hsueh 2018). Others species are from brackish waters or are marine intertidal and marine subtidal.