Ichneumon brevipunctatus, Riedel, 2018

Riedel, Matthias, 2018, Contribution to the Siberian species of Ichneumon LINNAEUS (Hymenoptera, Ichneumonidae, Ichneumoninae), Linzer biologische Beiträge 50 (2), pp. 1509-1562 : 1512-1513

Ichneumon brevipunctatus nov.sp. ( figs 2 , 20, 22, 46, 39)

T y p e m a t e r i a l: Holotype: ♀ " 1-5 vii 2003, 2000 m, SW Tannu-Ola Mt reg., Sogly vill., SW Tuwa reg., S Siberia, leg. Vastchenko " (coll. Riedel).

D e s c r i p t i o n: Body length 9 mm. Antenna almost filiform, with 34 flagellomeres; 1 st flagellomere 1.3x longer than wide, c. 3 rd flagellomere square, widest flagellomeres c.0.65x as long as wide; preapical flagellomere 0.7x as long as wide. Temple moderately and roundly narrowed behind eye. OOD 1.4. Frons rather densely punctate, smooth between punctures. Face and clypeus with scattered punctures, smooth between punctures. Gena wide, 1.3x as wide as eye, with very scattered punctures in ventral half. Malar space 1.0x as long as width of mandibular base and 1.7x as long as 1 st flagellomere. Genal carina complete, not interrupted ventrally. Hypostomal carina narrow.

Mesosoma covered with brownish hairs. Mesoscutum rather densely punctate, lateral field centrally with an almost smooth area with only very scattered punctures. Mesopleuron coarsely punctate, in frontal half with scattered punctures; metapleuron densely rugose-punctate, partly striate in frontal third; coxal carina present. Scutellum slightly elevated, about as long as wide, with fine scattered punctures. Area superomedia rectangular, 1.2x longer than wide; costula absent. Area petiolaris without lateral border. Mid and hind coxae with very scattered punctures, almost completely smooth apico-ventrally, hind coxa without scopa. Hind femur 3.3x longer than wide, punctate and finely granulate, with very scattered punctures basally and in ventral 1/2. Hind tibia with c.2 denticular spurs apico-externally. Fore and mid tarsomeres moderately enlarged, 3 rd mid tarsomere c.1.3x longer than wide.

Metasoma strongly oxypygous, hypopygium short. Postpetiolus strongly widened, medi- an field with very fine and superficial aciculation. 2 nd tergite very wide, 0.62x as long as wide. Gastrocoelus impressed, with several ridges; thyridium small, slightly oblique, c.0.5x as wide as the interval. 2 nd and 3 rd tergites with fine dense punctures, 2 nd tergite with longitudinal rugosity medially. Ovipositor sheath slightly extending behind metasomal apex.

Color: Black. Scapus and flagellomeres 1-12 red, pedicel blackish. Head completely black. Mesosoma black; collare and tegula reddish. 2 nd and 3 rd tergites reddish-brown, with diffuse blackish suffusion; 6th tergite with small yellow apical spot, 7 th tergite with narrow yellow stripe medially. Coxae and trochanters black; fore coxa frontally and fore trochanter apically reddish. Legs otherwise red; hind femur black, in basal 1/10 and apical 1/4 reddish. Wings with slightly yellowish tint, pterostigma yellow.

Males unknown.

T a x o n o m i c a l r e m a r k The species belongs to group E 3 sensu HILPERT (1992) and runs to Ichneumon mordax KRIECHBAUMER in his key. It differs by widened fore and mid tarsomeres, black head without reddish color pattern, black scutellum and a different color pattern of metasoma.

Figures

Figs 1-4: Habitus of: (1) Ichneumon berlovi nov.sp.; (2) I. brevipunctatus nov.sp.; (3) I. genator nov.sp.; (4) I. granulatus nov.sp.