Orasema reburra n. sp.

urn:lsid:zoobank.org:act:2E0FE42B-5AFA-4772-A21F-81BAA2852D3B (Figs 26–29)

Diagnosis. Most of body, including petiole but not eyes, with long setae (Figs 26, 28). Petiole slightly expanded laterally near midlength, with one or two dorsal longitudinal carinae (Fig. 29).

Orasema reburra is the only known species with a dark brown metacoxa (Figs 26, 29). Distinguished from O. caesariata, the only other species with long setae, by absence of setae from the eye, and by the more rounded head in frontal view (Fig. 27).

Female. Length, 3.4–4.2 mm. Head and mesosoma metallic blue to purple; pedicel and anellus pale brown, flagellum dark brown; coxae dark brown, metatrochanters yellow; petiole dark metallic purple to black, gaster dark brown to black.

Head subtriangular, 1.4× as long as broad (Fig. 27). Face with very shallow longitudinal groove between torulus and eye but lacking surrounding depression; scrobal depression with median carina bordered laterally by broad foveate furrow. Eye bare. Labrum with 9–11 digits. Palpal formula 2-2. Pedicel as broad as F2; flagellum 1.5–1.7× height of head; F2 2.5× as long as broad, F2 1.1× as long as F3.

Mesosoma (Fig. 28) with mesoscutum coarsely areolate-rugose and densely setose, lateral lobe with irregular transverse carinae and finely sculptured area near center. Axilla areolate-rugose; mesoscutellar disc coarsely areolate-rugose, slightly longer than broad, broadly separated from transscutal articulation basally by deep fovea; frenum areolate-rugose. Propodeal disc coarsely areolate-rugose, median carina lacking; callus smooth, with a few long setae. Metafemur with semi-erect long setae, setae denser and decumbent apically. Fore wing 2.3–2.6× as long as broad; stigmal vein 2.0–2.5× as long as broad, perpendicular to anterior margin.

Metasoma with petiole 1.3–1.4× as long as metacoxa, 2.5–2.6× as long as broad, laterally expanded near midlength, smooth, with 1 or 2 dorsal longitudinal carinae (Fig. 29). Hypopygium with few minute setae apically. Ovipositor not visible in available specimens.

Male. Unknown.

Type material. Holotype. Ecuador: Napo: Anangu, 240m, 0°30'22"S, 76°23'04"W, 25–30.xi.1987, Mike Huybensz [1♀, MCZ: UCRCENT00316397]. Paratypes. Brazil: Belen, Duret (leg.), viii.1951 [1♀, UCRC: UCRCENT00434661]. Colombia: Amazonas: PNN Amacayacu San Martin, 150m, 3°23'00"N, 70°06'00"W, 10– 18.x.2000, B. Amado, malaise trap [1♀, IAVH: UCRCENT00092181]; PNN Amacayacu San Martin, 150m, 3°23'00"N, 70°06'00"W, 8–16.ix.2000, B. Amado, malaise trap [1♀, UCRC: UCRCENT00091402]. Peru: Cusco: Quince Mil, 750m, 13°13'03"S, 70°44'27"W, 15–30.x.1962, L. Peña [1♀, CNC: UCRCENT00320755].

Etymology. From the Latin reburrus meaning “with bristling hair”.