Rasnichneumon alexandri sp. nov. (Fig. 2) LSID: urn:lsid:zoobank.org:act: 3CD4E52B-E2DF-4B05- 944F-C1D2845A7D57 Holotype. NIGP174881, female. Well-preserved wasp, partly obscured with air bubbles. Material. Holotype only. Etymology. The species is named in honor of Professor Alexander P. Rasnitsyn. Diagnosis. Fore wing with r-rs issuing before pterostigmal midlength, twice as long as distance between r-rs and m-cu; 2m-cu reclined; hind wing with 2-Rs and 2-M reaching wing margin. Description. Head broad, with eyes set wide apart. Antennae filiform, robust, 0.6�� as long as wing length; scape cylindric, robust, pedicel slightly longer than wide, 0.3�� as long as scape; flagellomeres gradually shortening from base to apex, and apical segment as long as subapical one. Mandible robust, gradually curved. Fore wing with pterostigma 4�� as long as wide, with r-rs issuing from 0.3 its length; 1-Rs&1-M 1.1�� as long as r-rs; 2-Cu 1.8�� as long as 1-Cu; 2-Rs+M 1.1�� as long as 1m-cu, meeting at distinct angle; short ramulus present; 2- Rs as long as 2+3M; r-rs 2.2�� as long as distance between r-rs and m-cu; 2m-cu straight, reclined. Hind wing with 5 distal hamuli; 2-Rs and 2-M reaching wing margin; 1-Rs 0.1�� as long as r-m; 1-M 1.3�� as long as r-m. Propodeum with strong longitudinal carination. 1- st metasomal tergite with strong longitudinal carinae; posterior tergites with rough longitudinal sculpture. Ovipositor spear-shaped, serrated, 0.3�� as long as fore wing length. Measurements. Fore wing length 2.0 mm, width 0.6 mm; hind wing length 1.2 mm, width 0.3 mm; antenna length 1.1 mm; ovipositor stylet 0.6 mm, sheath 0.4 mm; body length 2.3 mm.
Published as part of Kopylov, Dmitry S., Zhang, Qi & Zhang, Hai-Chun, 2021, The Darwin wasps (Hymenoptera: Ichneumonidae) of Burmese amber, pp. 592-603 in Palaeoentomology 4 (6) on pages 595-596, DOI: 10.11646/palaeoentomology.4.6.8, http://zenodo.org/record/5778622