Heteroichneumon rasnitsyni, Kopylov & Zhang & Zhang, 2021

Kopylov, Dmitry S., Zhang, Qi & Zhang, Hai-Chun, 2021, The Darwin wasps (Hymenoptera: Ichneumonidae) of Burmese amber, Palaeoentomology 4 (6), pp. 592-603 : 597-598

Heteroichneumon rasnitsyni sp. nov.

( Fig. 4 )

LSID: urn:lsid:zoobank.org:act:A270624F-2073-4936-B578-9F6C759D20F7

Holotype. NIGP174880 a, female. Body complete, propodeum and metasoma obscured with air bubbles; fore wings well-preserved, hind ones folded and poorly distinguishable. The amber piece contains syninclusions: NIGP174880 b, Heteroichneumon sp. (described below) and NIGP174880 c, juvenile spider.

Material. Holotype only.

Etymology. The species is named in honor of Professor Alexander P. Rasnitsyn.

Diagnosis. As for genus, by monotypy.

Description. Distance between ocelli 2× as long as ocellus diameter, distance between eye and lateral ocellus 4× as long as ocellus diameter. Antennae filiform, gracile, 1.4× as long as wing length; scape cylindric, gracile, pedicel tiny, as long as wide, 0.2× as long as scape; first flagellomere 1.1× as long as 2-nd one, posterior flagellomeres gradually shortening from base to apex, and apical flagellomere 2× as long as subapical one; flagellomeres with transverse constrictions: 1-st and 2-nd with two constrictions, posterior ones with one constriction.

Fore wing with pterostigma 3.6× as long as wide, with r-rs issuing from 0.4 its length; 1-Rs&1-M 1.4× as long as r-rs; 2-Cu 2.6× as long as 1-Cu; 2Rs+M&1m-cu arched, with no sharp bend or traces of ramulus; 2-Rs 1.3× as long as 2+3M; r-rs 1.5× as long as distance between rrs and m-cu; 2m-cu straight, proclined.

Hind wing with 2-Rs 0.6× as long as r-m; 1-M 1.2× as long as r-m; ramulus broken, 1-Cu 1.7× as long as cu-a.

Ovipositor 0.3× as long as fore wing length.

Measurements. Fore wing length 1.7 mm, width 0.8 mm; antenna length 2.4 mm; ovipositor stylet 0.6 mm, sheath 0.4 mm; body length 2.6 mm.

Figures

FIGURE 4. Heteroichneumon rasnitsyni sp. nov., holotype NIGP174883a. A, Dorso-lateral view. B, Wings in transmitting light. C, Mesonotum and head, lateral view. D, Hind wing. E, Mesonotum, dorsal view. F, Flagellomeres. G, Habitus drawing. H, Wings reconstruction. I, Mesonotal sculpture. Scale bars = 1mm in A, B and G–I, and 0.2 mm in C–F.