Brachyserphus nepalensis Kolyada

Kolyada, V. A., 2016, A New Species Of The Genus Brachyserphus Hellén, 1941 (Hymenoptera, Proctotrupidae) From Nepal, Far Eastern Entomologist 323, pp. 16-20 : 19

Brachyserphus nepalensis Kolyada , sp. n.

Figs 1 –12

TYPE MATERIAL. Holotype – ♀, Nepal: Phulcoki , 2600 m, oak forest, 13.X 1983, coll. A. Smetana ( CNCI) . Paratypes: 2 ♂, with same label as holotype.

DESCRIPTION. FEMALE. Length of body 3.0 mm; length of forewing 2.6 mm. Antennae as long as 2.5 of head width; ratio of length to width of antennomeres: A3-2.2; A12-1.3; A13-2.3. Head as wide as 0.36 of its length. Mesonotum compressed, medially as wide as 0.7 of head width. Pronotum and pronotal tubercles smooth, without wrinkles. Pronotal tubercles and not pointed roundish. Epomia complete and dorsally connected by carina with pronotal shoulder. Forewing pterostigma not deep as wide as 0.65 of its length. Ventral part of pronotum without group of setae posteriorly of epomia. Metapleuron with developed metapleural epicoxal carina. Propodeum elongate, 1.3 times longer than wide. Propodeum just behind spiracle and on apical area of dorsum finely reticulate. Number of hairs on each of dorsal lateral areas of propodeum 15-20. Punctate area in anterior part of fifth tergite reaching 2/3 of its length and included row of hairs in posterior part of tergite. Ratio of ovipositor sheath to hind tibia length 0.66. Ovipositor sheath slightly curved, and narrowly pointed to the end, with hairs on its lower surface approximately 0.25 as long as sheath high; ratio of length to width of ovipositor sheath 5.1.

Color. Body black. Labrum, mandibles, tegula, apex ovipositor sheath and legs all being light brown.

MALE. Length of body 2.8 mm; length of forewing 2.3 mm. Male differs from female in body proportions: head more transverse, as wide as 0.46 of its length; mesonotum not compressed, as wide as head; propodeum subquadrate. Male pronotal tubercles slightly pointed; pterostigma as wide as 0.8 of its length.

Color. Body entirely black.

DIAGNOSIS. New species similar to B. parvulus (Nees, 1834) in many characters but differs from the latter and others known species of the genus Brachyserphus by extremely compressed mesosoma and rounded head of female.

DISTRIBUTION. Nepal.

Figures

Figs 1‒6. Brachyserphus nepalensis sp. n., female (1, 3, 5, 6) and male (2, 4): 1 ‒ pronotum; 2 ‒ mesosoma, lateral view; 3-4 ‒ mesosoma, dorsal view; 5 ‒ propodeum, lateral view;