Ichneumon monostagon var. grandis KRIECHBAUMER , 1894

Ichneumon monostagon var. grandis KRIECHBAUMER, 1894

M a t e r i a l e x a m i n e d: (♁) Tegernsee (ZSM), according to HORSTMANN (1997) an infrasubspecific name and therefore not available.

D e s c r i p t i o n: ♁. Body length 18 mm. Flagellum with>37 segments (tips broken off); 1 st flagellar segment 2.6× as long as wide. Tyloids indistinct. Temple strongly and almost linearly narrowed behind eye. Occiput with transverse impression medially. OED 1.0× and OOD 1.3× ocellar diameter. Frons rugose-punctate. Gena about as wide as eye, with dense punctures. Clypeus densely punctate. MI 0.3.

Notaulus distinctly impressed in frontal 1/4 of mesoscutum. Mesoscutum coarsely and densely punctate, smooth and shining between punctures. Mesopleuron and metapleuron with coarse dense punctures; mesopleuron partly rugose, speculum smooth. Juxtacoxal carina present. Scutellum slightly elevated, about as long as wide, with sparse punctures and with lateral carina in basal 0.4. Area basalis without median tubercle. Area superomedia rectangular, frontal margin rounded, slightly wider than long; costula indistinct. Fore metatarsus without apical tooth. Hind femur 3.8× as long as wide. External surface of hind tibia with several denticular spines. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 3× their width; vein 2m-cu reaching its middle. Vein 1cu-a postfurcal by 1× its width.

Postpetiole with strong latero-median carina; lateral field punctate, slightly wider than median field; median field with irregular rugae. Gastrocoelus rectangularly impressed, with strong ridges. Thyridium 0.4× as wide as interval between thyridia. 2 nd tergite about as long as wide. 2 nd to 4 th tergites with dense coarse punctation and fine granulation, dull, 2 nd tergite ± finely rugose.

Color: black. Palps in part, narrow facial and ventral half of frontal orbits, collar and hind edge of pronotum, spot on subtegular ridge and 2 apical spots on scutellum yellowish. Legs dark brownish; fore and mid femora and tibiae yellowish-brown frontally. Pterostigma dark reddish-brown.

Taxonomical remark: This large specimen was described as a variety of Ichneumon percussor [recte: Virgichneumon monostagon ] by KRIECHBAUMER (1894), and mentioned as belonging to this species in HORSTMANN (1997) and YU et al. (2016). I have studied this specimen in the ZSM. Due to its large size and form of propodeum (area basalis without median tubercle), it actually belongs to the Cratichneumonina sensu HEINRICH and is probably a species of Cratichneumon.