Eupetersia (Nesoeupetersia) singaporensis, Pauly, 2012

Pauly, Alain, 2012, Three new species of Eupetersia Blüthgen, 1928 (Hymenoptera, Halictidae) from the Oriental Region, European Journal of Taxonomy 14, pp. 1-12 : 2-4

Eupetersia (Nesoeupetersia) singaporensis sp. nov. ( Fig. 1 A-F, 7)

Etymology

The specific epithet refers to the type locality.

Material examined

Holotype

Male : SINGAPORE, Kranji Nature Trail (Sungei Buloh; 1°26’49.01”N, 103°43’47.94”E), KNT01, Malaise trap 1, 26 May 2009, mangrove, Reg. 29103, leg. P. Grootaert ( RBINS, Brussels).

Diagnosis

Small species (5 mm long) with black brown body and dark legs, finely and sparsely punctuate on head and scutum.

Differential diagnosis

Differs from Eupetersia nathani by its smaller size (5 mm), brown metasoma, head and scutum more finely and sparsely punctuate. From E. sabahensis sp. nov. it differs by darker legs and larger head.

Description

BODY LENGTH. 5 mm. Forewing length: 3.8 mm.

COLOUR. Black, metasoma chestnut brown; legs testaceous, anterior legs and knees yellow testaceous; scape, tegulae, mandibles and labrum yellow ( Fig. 1A ); hairs on terga reddish black.

PUBESCENCE. Grey and rather poor, denser on face and vertical sides of propodeum.

STRUCTURE. Head wider than long, length/width = 0.84 ( Fig. 1C ). Vertex rounded. First and second flagellomeres subequal in length as in other Eupetersia . culpture. Head and scutum finely and sparsely punctuate ( Fig. 1B, C ). Dorsal surface of propodeum with irregular carinae ( Fig. 1D ), terminating at posterior margin. Metasomal terga entirely shining and nearly impunctate ( Fig. 1E ). Pygidial area rounded posteriorly. Genitalia very small, gonocoxites not depressed and not striate.

Figures

Fig. 1. Eupetersia singaporensis sp. nov., ♂ holotype. A. Lateral habitus. B. Dorsal view of head and mesosoma. C. Facial view. D, Propodeum. E. Metasoma. F. Geographic distribution.