Gecarcinucoidea Rathbun, 1904

Superfamily Gecarcinucoidea Rathbun, 1904 Family Gecarcinucidae Rathbun, 1904

Somanniathelphusa zanklon Ng & Dudgeon, 1992 View in CoL #

Parathelphusa sinensis View in CoL — Gee 1926:162 [list, part]; Gordon 1931: 528 [part] [not Parathelphusa sinensis H. Milne Edwards, 1853 View in CoL ].

Parathelphusa (Parathelphusa) sinensis View in CoL — Shen 1940a: 229 [not P. sinensis H. Milne Edwards, 1853 View in CoL ].

Somanniathelphusa sinensis sinensis View in CoL — Bott 1968b: 409, figs. 11, 12, 30 [part]; Bott 1970a: 338; Bott 1970b: 111, pl. 20(42–44) [part] [not P. sinensis H. Milne Edwards, 1853 View in CoL ].

Somanniathelphusa zanklon Ng & Dudgeon, 1992: 761 View in CoL , figs. 11–13; Dudgeon and Corlett 1994: 53, 133, fig. 6B, pl. 20; Dudgeon 1999: 181, fig. 4.21B; Fellowes et al. 2002: tab. 2 [list]; Shih et al. 2007: tab. 1.

Taxonomy: Ng and Dudgeon (1992), Shih et al. (2007), C Huang et al. (2018).

Type: Holotype ò ZRC 1991.1822 View Materials , paratypes in AS (now IZCAS), MP (now MNHN) and ZRC.

Type locality: Lower course of Lam Tsuen River, Hong Kong ( Ng and Dudgeon 1992).

Distribution: South China: Hong Kong, Macao and Guangdong ( Shih et al. 2007; C Huang et al. 2018).

Habitat: Freshwater; low-gradient streams with muddy substratum ( Ng and Dudgeon 1992); occasionally seen in freshwater marshes.

Remarks: Records under the name Parathelphusa sinensis H. Milne Edwards, 1853 , and even the type series (from “Mers de la Chine ”), was reported to be heterogeneous ( Ng and Dudgeon 1992). A lectotype for P. sinensis was designated by Ng and Dudgeon (1992), and another distinct species in the former type series of P. sinensis was described as Somanniathelphusa falx . Old material from Hong Kong were referred to the present species in the same paper.