Geothelphusa miyakoensis Shokita, Naruse, and Fujii, 2002

Naruse, Tohru, Shokita, Shigemitsu & Ng, Peter K. L., 2006, A revision of the Geothelphusa leIJicerIJix species group (Crustacea: Decapoda: Brachyura: Potamidae), with descriptions of three new species, Journal of Natural History 40 (13 - 14), pp. 759-781 : 775

Geothelphusa miyakoensis Shokita, Naruse, and Fujii, 2002

Geothelphusa sp. 1: Yoshigou 1999, p 21, Plate 2-K.

Geothelphusa sp.: Segawa 2000, p 243, Table 1, Figures 1 , 2 (partim).

Geothelphusa sp. 3.: Shokita 2002, p 167, Photograph 3.

Geothelphusa miyakoensis: Shokita et al. 2002, p 443 , Figures 1–3 ; Naruse 2005b, p 190; Shokita 2005a, p 33, Plate 1 (lower right).

Material examined

Holotype: one male, CL 29.4 mm, RUMF-ZC-14, Miyako-Jima, coll. S. Shokita, H. Kamizato, S. Tomari, and K. Arakaki, 14 August 1997. Paratypes: one male, CL 26.6 mm, NSMT-Cr 14263, one female, CL 17.9 mm, NSMT-Cr 14264, locality same with holotype, coll. H. Fujii, 24 January 1997; two males, CL 24.1 mm, ZRC 2001.2251 , CL 21.1 mm, ZRC 2001.2252 , two females, CL 21.56, ZRC 2001.2253 , CL 21.8 mm, ZRC 2001.2254 , same data as holotype; one male, CL 23.2 mm, RUMF-ZC-15, one female, CL 24.3 mm, RUMF-ZC-16, coll. Y. Hokama, October 1997 ; one male, CL 26.6 mm, RUMF-ZC-17, same data as RUMF-ZC-15, 16, coll. Y. Hokama, 14 November 1997 . All specimens from Miyako Island .

Remarks

There is no need to redescribe this species as this has been done in detail by Shokita et al. (2002). Segawa (2000) revealed that there is a close relationship in the ND2 gene of mitochondrial DNA between G. leυicerυix (RUMF-ZC-138) and G. miyakoensis ( R. Segawa, personal communication). However, the morphological differences between these two species are significant: G. leυicerυix can be differentiated from G. miyakoensis by slender G1 (versus proportionately stouter in G. miyakoensis ) and the shape and structure of the anterolateral margin (faintly cristate, with or without faint granules versus distinctly cristate and granulated).

Figures

Figure 1. Map of the Okinawa Group in East Asia.

Figure 2. Geothelphusa leυicerυix (Rathbun, 1905), holotype, USNM 20642, male, CL 48.3 mm. (a) Dorsal view; (b) frontal view of carapace; (c) ventral side of left G1; (d) dorsal side of left G1. Scale bars: 10 mm (b); 5 mm (c, d).

Figure 3. Geothelphusa leυicerυix (Rathbun, 1905). (a) Dorsal view; (b) dorsal view of carapace; (c, e) ventral side of left G1; (d) dorsal side of left G1; (f) ventral side of right G1. (a, e, f) ZRC 2006.0074, male, CL 35.5 mm; (b– d) RUMF-ZC-137, male, CL 37.9 mm. Scale bars: 10 mm (b); 5 mm (c–f).