Losgna nigrita Heinrich, 1965

Riedel, Matthias, 2023, Contribution to the knowledge of the Ichneumoninae (Hymenoptera, Ichneumonidae) from Maritime Southeast Asia, Zootaxa 5363 (1), pp. 1-94 : 69-70

Losgna nigrita Heinrich, 1965

Material. Malaysia: SE Sabah, nr Danum Valley Field C, Mal. trap 12, W 12, c 150 m, 1 ♂ 20.x.–22.xii.1987, leg. C. van Achterberg (Leiden) .

Remarks. ♂. Body length 11 mm. Flagellum with 40 flagellomeres; 1 st flagellomere 3.8 × longer than wide. Tyloids on flagellomeres 9–20, long-oval, maximally 0.5 × as long as their flagellomeres. Hind femur 4.2 × longer than wide. 2 nd tergite 1.2 × longer than wide.

Colour. Black. Ivory are flagellomeres 9–18, palps, mandible except teeth, clypeus, face, gena, narrow stripes of frontal orbit, scape ventrally, spot on tegula, apical margins of scutellum and postscutellum, weak posterolateral spot of propodeum around apophysis, 6 th tergite mainly, 7 th tergite and paramere entirely, fore and mid coxae and trochanters. Fore and mid legs otherwise pale yellow, their tarsi ± infuscate; hind coxa and trochanter and hind femur yellow; hind tibia and tarsus black. Postpetiole brownish apically, 2 nd tergite with an apical reddish band. Pterostigma black.

This ♂ differs from the original description of Losgna nigrita ( Heinrich 1965: 140–141) by the apical reddish band of 2 nd tergite. It is otherwise typical and might represent a colour variant or subspecies of that species.

Distribution. Known from Malaysia and Indonesia including Borneo.