Sundathelphusa rubra ( Schenkel, 1902 )

Ng, Oliver K. S. Chia Peter K. L., 2006, The Freshwater Crabs Of Sulawesi, With Descriptions Of Two New Genera And Four New Species (Crustacea: Decapoda: Brachyura: Parathelphusidae), Raffles Bulletin of Zoology 54 (2), pp. 381-428 : 419-422

Sundathelphusa rubra ( Schenkel, 1902)

( Figs. 42B , 44 )

Potamon (Geothelphusa?) rubrum Schenkel, 1902: 537, Pl. 11 Fig.

16; Roux, 1904: 570.? Potamon (Geothelphusa) angustipes Schenkel, 1902: 1902: 533 ,

Pl. 11 Fig. 17 ; Roux, 1904: 570; Rathbun, 1905: 510. Potamon (Geothelphusa) ruber – Rathbun, 1905: 211. Sundathelphusa rubra – Bott, 1970c: 74, Pl. 12 Figs. 33-35 , Pl. 28

Fig. 49; Ng & Stuebing, 1989: 13.? Pratelphusa (Liotelphusa) angustipes – Roux, 1915: 248.

Material examined. – Lectotype: male (22.6 by 17.4 mm) ( NMB 38 a), Panu River southern part of Matingang mountain chain, northern Sulawesi, ca. 1000 m, coll. M. Schenkel. Aug.1894. Others: 3 males, 2 females ( ZRC 2000.1695 ), small river, between forest and rice fields, water pH 6.5; Kakaskasen, 1 ° 20'34.2"N 124 ° 50'29.7"E, coll. C. D. Schubart et al., 30 Jan.2000.

Remarks. – Schenkel (1902) described Potamon (Geothelphusa?) rubrum (from Matinang) on the basis of three males and? Potamon (Geothelphusa) angustipes (from Masarang) on the basis of two males. No holotypes were designated for either species. Bott (1970c) examined both taxa but did not select any lectotypes. We here select the best specimen of Potamon (Geothelphusa?) rubrum in NMB, a male 22.6 by 17.4 mm, as the lectotype of the species to fix its identity ( Fig. 44 ).

The carapaces of S. cassiope and S. rubra are both prominently swollen, with the dorsal surface strongly convex and the branchial regions raised. In addition, their G1 terminal segments are proportionately much shorter than those of other Sulawesi species. The same is true of Potamon (Geothelphusa) angustipes Schenkel, 1902 , a species that was tentatively synonymised with S. rubra by Bott (1970c: 74) (see also Schenkel, 1902: 533, Pl. 11 Fig. 17 ).

Figures

Fig. 42. Dorsal views. A, Sundathelphusa aruana (Roux, 1911), paralectotype male (27.9 by 21.5 mm, NMB 695a); B, Sundathelphusa rubra (Schenkel, 1902), lectotype male (22.6 by 17.4 mm, NMB 38a).

Fig. 44. Sundathelphusa rubra (Schenkel, 1902), lectotype male (22.6 by 17.4 mm, NMB 38a). A, left G1 ventral view; B, left G1 dorsal view; C, left G1 distal part, ventral view; D, left G1 distal part, dorsal view; E, left G2. Scale bars = 1.0 mm.

Fig. 16. Parathelphusa possoensis (Roux, 1904), lectotype male (23.9 x 18.3 mm, NMB 23VIII): A, dorsal view; B, frontal view; C, ventral view.

Fig. 17. Parathelphusa pareparensis, lectotype male (22.3 x 17.6 mm) (RMNH D 2587): A, dorsal view; B, frontal view.

Fig. 33. Nautilothelphusa zimmeri (Balss, 1933), female specimens: A, 38.7 x 34.7mm (MZB 643) dorsal view; B, 38.7 x 33.3 (MZB 643), dorsal view; C, 38.7 x 33.3 (MZB 643), ventral view.

Fig. 34. Left G1 and G2. Nautilothelphusa zimmeri (Balss, 1933): A, D, G1 ventral view; E, G1 dorsal view; B, F, G1 distal part, ventral view; C, G, G1 distal part, dorsal view; H, G2. A-C, holotype male (23.2 x 20.5 mm, MZB 48); D-H, male (41.8 x 35.1 mm) (ZRC 2000.1711). Scale bars = 1.0 mm.

Fig.35. Migmathelphusa olivacea, new genus, new species, holotype male (33.2 x 29.1 mm, MZB 1486): A, dorsal view; B, frontal view; C, ventral view.