Rasnichneumon gracilis sp. nov.

(Fig. 3)

LSID: urn:lsid:zoobank.org:act: 33413EDE-5E6B-4C94- AEF9-3EA39E155527

Holotype. NIGP174882, female. Well-preserved wasp with right wings partly lost.

Material. Holotype only.

Etymology. The species is named gracilis (Latin) — gracile.

Diagnosis. Fore wing with r-rs issuing after pterostigmal midlength, as long as distance between r-rs and m-cu; 2m-cu proclined; hind wing with 2-Rs as short stub, 2-M lost.

Remarks. Differs from R. alexandri in having fore wing with r-rs shorter, issuing beyond the pterostigmal midlength, 2m-cu proclined, hind wing with 2-Rs as short stub and 2-M lost.

Description. Distance between ocelli 1.5× as long as ocellus diameter, distance between eye and lateral ocellus 2× as long as ocellus diameter.Antennae filiform, gracile, 0.8× as long as wing length; scape cylindric, gracile, pedicel tiny, slightly longer than wide, 0.2× as long as scape; first flagellomere 2× as long as 2 nd one, posterior flagellomeres gradually shortening from base to apex, and apical flagellomere 1.3× as long as subapical one.

Fore wing with pterostigma 2.5× as long as wide, with r-rs issuing from 0.6 its length; 1-Rs&1-M as long as r-rs; 2-Cu 3.0× as long as 1-Cu; 2-Rs+M&1m-cu arched, with no sharp bend or traces of ramulus; 2-Rs 0.8× as long as 2+3M; r-rs 1.2× as long as distance between r-rs and m-cu; 2m-cu straight, proclined.

Hind wing with 2-Rs as short stub, 2-M lost, 1-M&rm arched, with no sharp bend.

Ovipositor spear-shaped, serrated, 0.4× as long as fore wing length.

Measurements. Fore wing length 1.5 mm, width 0.6 mm; hind wing length 1.2 mm, width 0.2 mm; antenna length 1.3 mm; ovipositor stylet 0.6 mm, sheath 0.3 mm; body length 2.2 mm.