Astiphromma flavitarsis, Riedel, 2019

Riedel, Matthias, 2019, Contribution to the Mesochorinae (Hymenoptera, Ichneumonidae) of Nepal, Linzer biologische Beiträge 51 (2), pp. 1163-1174 : 1164-1165

Astiphromma flavitarsis nov.sp. ( figs 1-6 )

Holotype: (♀) Central Nepal, N. Kathmandu env., Nagarkot , N27°4´08´´ E85°31´19´´, 13.V.2013, 2000 m, leg. A. Klimenko (coll. RIEDEL).

Paratypes: (3♀♀) Nepal: Mahakali, D: Darchula, Bachtal S Taisain , 18.VI.2017, LFH 17 -08, leg. A. Weigel, 2910 m, mountain mixed forest, 3 rd tent place, N29°51´52´´ E80°40´17´´ ( Erfurt ).

Description: ♀: Body length 13-14 mm. Flagellum with 50-53 flagellomeres; 1 st flagellomere length 4.9x width and 0.60x eye length; 2 nd flagellomere length 3.0x width; preapical flagellomeres 2x longer than wide. Temple short, strongly and roundly narrowed behind eye, dorsally c. 0.33x as long as eye. Ocelli very large, lateral ocellus almost touching eye, distance of lateral ocellus to eye 0.1x ocellar diameter. Occipital carina complete and straight medially. Frons fine granulate. Face and clypeus densely but superficially punctate and finely granulate, ± matte. Facial width 0.95x length of face+clypeus and 0.73x eye length; inner eye margins parallel. Malar space 0.3x as long as width of mandibular base. Mandible stout, with two equal teeth. Genal carina reaching hypostomal carina away from mandibular base, both carinae low.

Mesoscutum covered with dense pale hairs, finely granulate, but ± shining. Mesopleuron with very fine rather dense setiferous punctures, speculum smooth. Metapleuron granulate, with very fine superficial punctures. Scutellum without lateral carina and apical tubercle, rounded in profile. Propodeum completely carinate. Area basalis trapezoid, slightly wider than long. Area superomedia 1.9-2.2x longer than wide and 1.4-1.7x longer than area petiolaris; costula reaching area superomedia in its frontal 0.35. Area petiolaris 0.95x as long as wide. Hind femur slender, 6.4-6.6x longer than wide; hind metatarsus 0.50-0.55x as long as hind tibia; distal fore tarsomere 2.4x longer than wide; hind claws with c. 7 long teeth.

Areolet slightly wider than long, pointed or shortly stalked; 2nd recurrent vein in its middle. Nervulus postfurcal (by 2-3x its width). Nervellus of hind wing slightly reclivous, intercepted at 0.75 of its length; discoidella distinctly developed.

1 st tergite 2.9-3.1x longer than wide, with deep glymma, without ridges in front of glymma; dorsal carina weak, in height of tergal spiracle. Postpetiolus with weak central rim, finely granulate, matte. 2 nd tergite 1.10-1.15x longer than wide; thyridium large, roundish. Ovipositor sheath completely pilose, 6.5-8.0x longer than wide and 0.85-0.9x as long as hind metatarsus, moderately narrowed in apical 0.4.

Colour: Head including antenna red; mandibular base, malar space, clypeus, face, gena and orbits yellowish; stemmaticum often brownish or blackish. Mesosoma brown or blackish; pronotum, mesopleuron, metapleuron and propodeum ± reddish; 4 longitudinal stripes on mesoscutum which are confluent frontally, ventral edge of pronotum, scutellum, subtegular ridge and mesopleuron centrally yellowish. Metasoma reddish, often 1 st and 2 nd tergites ± brownish. Legs red; mid and hind coxae ± brownish or blackish; hind tarsus yellowish. Wings hyaline, pterostigma ochreous.

♂ unknown.

Remark: This new species belongs to the A-group of Astiphromma (sensu NAKANISHI 1969: Scutellum rounded, without apical tubercle, and 1 st tergite with lateral carina at the level or dorsad of spiracle). It is characterized by the very large ocelli, slender hind femur, characteristical colour pattern of mesosoma and pale yellow hind tarsi.

Figures

Figs 1-6: Astiphromma flavitarsis nov.sp. ♀: (1) habitus, (2) propodeum, (3) face, (4) mesopleuron, (5) ovipositor sheath, (6) hind claw.