Dineutus (Spinosodineutes) neohollandicus Ochs, 1926

Polhemus, Dan A., 2011, New distributional records for Gyrinidae (Insecta: Coleoptera) on New Guinea and nearby islands, with a checklist of the New Guinea species, Zootaxa 2900, pp. 51-68 : 64-65

Dineutus (Spinosodineutes) neohollandicus Ochs, 1926

Fig. 8

Dineutes marginatus Régimbart, 1883: 425 (in part).

Dineutes neo-guineensis Régimbart, 1884: 470 (in part).

Dineutus (Gyrinodineutus) neohollandicus Ochs, 1926: 119 . Dineutus (Spinosodineutes) neohollandicus: Ochs, 1949: 194 .

Material examined. INDONESIA, Papua Prov. [= former Irian Jaya Prov.]: 1 male, Ajkwa River basin, wetlands in former Ajkwa River channel near Km. 21 on Portsite road, 16 km. S. of Timika, 15 m. [50 ft.], 4°39'55"S, 136°53'50"E, water temp. 26.5° C., pH 7.4, 21 January 1997, 10:00–11:00 hrs., CL 7053, D. A. Polhemus ( USNM).

Discussion. This species is widespread across the northern margin of Australia and in southern New Guinea. The record below is the first from rivers draining to the Arafura Sea between the Merauke and Etna Bay, and fills a major gap in the distribution records for this taxon ( Fig. 8 ).

This is the species listed as “ Dineutes neohollandicus ” in Polhemus & Polhemus (1998).

Figures

FIGURE 8. Distribution of Dineutes (Spinosodineutes) neohollandicus on New Guinea. Symbols with grey centers represent previous records; symbols with black centers represent new records presented in this paper.