Ichneumon mandibulatus Riedel 2018, nov.sp.

• Main Author: Riedel, Matthias
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Hymenoptera; Ichneumonidae; Ichneumon; Ichneumon mandibulatus; taiga; Siberia
• Online Access: https://zenodo.org/record/5272794; https://doi.org/10.5281/zenodo.5272794

Ichneumon mandibulatus nov.sp. (figs 8, 29, 43, 52, 71) M a t e r i a l e x a m i n e d: Holotype: ♀ "S Siberia, Hakassia reg., Sallyghen-Taiga mt. reg., 2400 m, 10 vii 2005, leg. Osipov " (coll. Riedel). D e s c r i p t i o n: Body length 13.5 mm. Antenna stout and almost filiform, with 36 flagellomeres; 1 st flagellomere 1.5x longer than wide, 4 th flagellomere square, widest flagellomeres c.0.68x as long as wide; preapical flagellomere 0.65x as long as wide. Temple moderately and roundly narrowed behind eye. Ocelli rather small, OOD 1.8. Occiput densely and coarsely punctate and granulate. Frons coarsely rugose-punctate. Face densely punctate, smooth between punctures. Clypeus with rather dense punctures, smooth between punctures. Mandible thickened, with parallel sides, teeth blunt, lower tooth much smaller than the upper one. Gena strongly widened ventrally, 1.5x as wide as eye, with scattered punctures in ventral 1/2. Malar space 1.0x as long as width of mandibular base and 1.3x as long as 1 st flagellomere. Genal carina complete, not interrupted ventrally; hypostomal carina narrow. Mesosoma covered with brownish hairs. Mesoscutum densely punctate, smooth between punctures. Mesopleuron and metapleuron coarsely striate-punctate; coxal carina present. Scutellum slightly elevated, about as wide as long, with scattered punctures. Area superomedia trapezoid, widest frontally, c.1.2x longer than wide; costula weakly indicated. Area petiolaris without lateral border. Hind coxa coarsely punctate, without scopa, but with a longitudinal blunt ventro-internal edge (as in Ichneumon stramentarius GRAVENHORST). Hind femur 3.4x longer than wide, with scattered punctures in ventral 1/3. Hind tibia with c.2 denticular spurs apico-externally. Tarsomeres slender, 3 rd mid tarsomere c.1.55x longer than wide. Metasoma oxypygous, hypopygium short. Postpetiolus strongly widened, lateral field punctate and c.0.9x as wide as the median one, median field with fine regular aciculation. 2 nd tergite c.0.6x as long as wide. ...