Virgichneumon submontanus (HEINRICH, 1951), 2024

Riedel, Matthias, 2024, The genus Virgichneumon HEINRICH in the West Palaearctic region (Hymenoptera, Ichneumonidae, Ichneumoninae), Linzer biologische Beiträge 56 (1), pp. 149-199 : 174-175

Virgichneumon submontanus (HEINRICH, 1951) , comb. nov. (figs 38, 58)

Holotype: (♀) Holotypus; Barichneumon submontanus i. l. 1951 Heinr; Oberlaussa, A. s., leg. A. Franz ( ZSM), type studied .

D e s c r i p t i o n: ♀. Body length 9.5 mm. Flagellum with 37 segments, moderately lanceolate; 1 st flagellar segment 2.0× as long as wide; 10 th segment square; widest segments 1.5× as wide as long. Temple strongly and almost linearly narrowed behind eye. OED 1.5× and OOD 2.1× ocellar diameter. Gena with rather dense punctures, 0.9× as wide as eye. MI 1.0.

Epicnemial carina moderately elevated behind fore coxa and bilobed. Scutellum moderately elevated, slightly wider than long, with lateral carina in basal 0.5 and with coarse sparse punctures. Area basalis narrow, about as long as wide. Area superomedia heart-shaped, wider than long; posterior to its middle with costula (fig. 38). Hind coxa densely punctate, without scopa. Hind femur densely punctate, 3.4× as long as wide. External surface of hind tibia with multiple (8-10) stout bristles. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 2× their width; vein 2m-cu reaching distad its middle. Vein 1cu-a postfurcal by 2× its width.

Postpetiole without latero-median carina, strongly punctate. Gastrocoelus triangularly impressed, almost smooth. Thyridium oblique, 0.8× as wide as interval between thyridia (fig. 58). 2 nd tergite 1.3× as wide as long. 2 nd to 4 th tergites densely punctate. Ovipositor sheath extending beyond metasomal apex by length of 7 th tergite.

Color: black. Setae of mesoscutum grey. Mandible except teeth reddish. Flagellar segments 8/9-13 dorsally, spot on vertex opposite to lateral ocellus, triangular spot of 6 th tergite and 7 th tergite mainly ivory. Mesosoma black. Postpetiole, 2 nd and 3 rd tergites completely and 4 th basally and laterally red. Coxae, trochanters and trochantelli black; legs otherwise reddish; fore and mid femora ± black; hind tibia narrowly infuscate apically, hind tarsus blackish. Pterostigma brown.

♁. Body length 11.0-12.0 mm. Flagellum with 36-37 segments; 1 st segment 2.1× as long as wide. Tyloids indistinct, on flagellar segments 5/6-12, linear, maximally 0.7-0.8× as long as their segments. Temple slightly narrowed behind eyes. OED 1.0-1.1× and OOD 1.7× ocellar diameter. Occiput slightly impressed medially. MI 0.2-0.3. Face, gena and clypeus with dense punctures. Epicnemial carina distinctly widened behind fore coxa, bilobed ventrally. Scutellum moderately elevated, wider than long, with sparse punctures and with lateral carina in basal 0.6-0.7. Area superomedia wider than long; costula reaching posterior to its middle. Fore metatarsus without apical tooth. Hind femur 3.3- 3.6× as long as wide.

Postpetiole without latero-median carina, median field punctate. Gastrocoelus triangularly impressed. Thyridium oblique, 0.6-0.7× as wide as interval between thyridia. 2 nd tergite 1.0-1.1× as long as wide; 2 nd to 5 th tergites with coarse punctures.

Color: black. Flagellum black. Palps partly, clypeus laterally, inner orbit up to lateral ocellus, collar, sometimes hind edge of pronotum and subtegular ridge ivory. Postpetiole, 2 nd and 3 rd tergites completely and 4 th tergite ± red. Coxae and trochanters black; fore leg otherwise red; mid leg black, mid femur apically and mid tibia frontally reddish or yellowish; hind leg black, hind femur basally narrowly red, hind tibia red in basal half. Pterostigma brown or black.

Taxonomical remark: One ♀ from Germany (Bodman near Bodensee) has already been labeled as “ Virgichneumon sp. det. Heinrich” ( ZSM).

S t u d i e d m a t e r i a l: from Austria, Germany * ( ZSM), Switzerland * (coll. Riedel).