Ichneumon granulatus, Riedel, 2018

Riedel, Matthias, 2018, Contribution to the Siberian species of Ichneumon LINNAEUS (Hymenoptera, Ichneumonidae, Ichneumoninae), Linzer biologische Beiträge 50 (2), pp. 1509-1562 : 1517

Ichneumon granulatus nov.sp. ( figs 4 , 25 , 48 , 67 )

M a t e r i a l e x a m i n e d Holotype: ♀ " Russia, S Siberia, Hakassia reg., W. Sagan mts, 2400 m, Sallyghem-Taiga reg., 5 vii 2004, leg. Osipov " (coll. Riedel).

D e s c r i p t i o n: Body length 9.8 mm. Antenna slightly lanceolate, with 37 flagellomeres, 1 st flagellomere 1.6x longer than wide, 7 th flagellomere square, widest flagellomeres 0.63x as long as wide, preapical flagellomere 0.78x as long as wide. Temple moderately and roundly narrowed behind eye. Frons and face densely punctate and granulate. Clypeus with rather dense punctures. Gena 1.25x wider than long, with rather dense punctures ventrally. Malar space 1.3x longer than width of mandibular base and 1.3x longer than 1 st flagellomere. Genal carina complete, hypostomal carina slightly elevated.

Mesosoma covered with brownish hairs. Mesoscutum densely punctate, median field finely granulate. Mesopleuron and metapleuron densely punctate and distinctly granulate; coxal carina present. Scutellum almost flat, slightly wider than long, with scattered punctures. Area superomedia hexagonal, 1.2x wider than long; costula weakly developed, at least medially. Area petiolaris without lateral carina. Hind coxa coarsely punctate and granulate, with rather long brownish hairs, but without scopa. Hind femur 3.8x longer than wide, with scattered punctures in ventral third. Hind tibia with c.4-5 denticular spurs apico-externally. Tarsomeres slender, 3 rd mid tarsomere c.1.5x longer than wide.

Metasoma strongly oxypygous, hypopygium short. Postpetiolus strongly widened, median field c.1.9x wider than the lateral one, with fine aciculation and some punctures, lateral field densely punctate. 2 nd tergite 0.69x as long as wide. Gastrocoelus impressed, with ridges; thyridium slightly oblique, c.0.6x as wide as the interval. 2 nd and 3 rd tergites densely punctate and granulate, ± opaque, without longitudinal rugae medially. Ovipositor sheath distinctly extending behind metasomal apex.

Color: Black. Scapus except narrow brownish base, pedicel and flagellomeres 1-14 red; flagellomeres 10-12 with a yellow stripe dorsally, following flagellomeres blackish. Head and mesosoma black; collare, tegula and scutellum reddish. 2 nd and 3 rd tergites red, 2 nd tergite diffusely infuscate centrally, 3 rd tergite with black band in apical third. 6 th and 7 th tergites with roundish ivory spots apically. All coxae and trochanters and fore and mid trochantelli black. Hind trochantellus and legs red. Hind femur with blackish stripe centrally-dorsally (half as long as the femur). Wings with slightly brownish tint. Pterostigma reddish.

Males unknown.

T a x o n o m i c a l r e m a r k This species belongs to the group G 4 of HILPERT (1992) and runs to I. pilulicornis HEINRICH in his key. It differs by the complete genal carina, slightly elevated hypostomal carina and wide malar space.

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.

Figs 21-26: Head from dorsal of: (21) Ichneumon berlovi nov.sp.; (22) I. brevipunctatus nov.sp.; (23) I. breviscopulatus nov.sp.; (24) I. genator nov.sp.; (25) I. granulatus nov.sp.; (26) I. hakassiacus nov.sp.

Figs 45-48: Scutellum and propodeum of: (45) Ichneumon berlovi nov.sp.; (46) I. brevipunctatus nov.sp.; (47) I. genator nov.sp.; (48) I. granulatus nov.sp.

Figs 65-68: Postpetiolus and 2nd tergite of: (65) Ichneumon breviscopatus nov.sp.; (66) I. genator nov.sp.; (67) I. granulatus nov.sp.; (68) I. hakassiacus nov.sp.