Ichneumon berlovi, 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

Ichneumon berlovi nov.sp. ( figs 1 , 21 , 45 , 64)

T y p e m a t e r i a l: Holotype: ♀ " Siberia , Irkutsk region, 5 km E Pivovarkha, 16 vii 2007, leg. Berlov " (coll. Riedel). D e s c r i p t i o n: Body length 9.5 mm. Antenna filiform, with 32 flagellomeres; 1st

flagellomere 2.4x longer than wide, 8 th or 9 th flagellomeres square, widest flagellomeres about square; preapical flagellomere 0.94x as long as wide. Temple distinctly and roundly narrowed behind eye. OOD 1.4. Frons with superficial and dense punctures, granulate, ± opaque. Face and clypeus densely punctate and granulate. Gena 1.1x as wide as eye, with fine striation dorsally and rather dense punctures ventrally. Malar space 1.6x as long as width of mandibular base and 0.95x as long as 1 st flagellomere. Genal carina complete, not interrupted ventrally. Hypostomal carina narrow.

Mesosoma covered with brownish hairs. Mesoscutum densely punctate and granulate, opaque. Mesopleuron completely rugose-punctate (including speculum); metapleuron coarsely rugose-punctate; coxal carina present. Scutellum moderately elevated, about as long as wide, with rather dense punctures. Propodeum rather short. Area superomedia slightly elevated above surrounding areas, hexagonal, 1.35x wider than long; costula weakly present. Area petiolaris bordered by lateral rugae in apical 2/3. Hind coxa densely punctate and granulate, without scopa. Hind femur 3.8x longer than wide, with very superficial punctures, granulate. Hind tibia with c.6 external denticular spurs. Tarsi not enlarged, 3 rd mid tarsomere 1.6x longer than wide.

Metasoma oxypygous; hypopygium short. Postpetiolus strongly widened, median field c.2x wider than the lateral one, with regular aciculation; lateral field rugose-striate. 2 nd tergite 0.68x as long as wide. Gastrocoelus narrow, with fine ridges; thyridium transverse and very wide, 1.8x wider than the interval. 2 nd and 3 rd tergites very densely punctate and granulate, ± opaque; 2 nd tergite with fine longitudinal rugosity medially. Ovipositor sheath slightly extending behind metasomal apex. Color: Black. Rings on flagellomeres 6-10 and roundish spots on 6th and 7th tergites ivory. Tegula and small central spot on scutellum reddish. Postpetiolus and 2 nd tergite reddish, 3 rd tergite reddish-brown. Coxae and trochanters black; legs otherwise yellowish-red; fore femur in basal 2/5 and mid and hind femora mainly dark brown; distal tarsomeres brownish apically. Wings hyaline, pterostigma yellowish.

Males unknown.

T a x o n o m i c a l r e m a r k This species belongs to group I of HILPERT (1992) and runs to I. memorator WESMAEL in his key. It is closely related to I. thyridiator nov.sp. and differs by the square central flagellomeres, wider area superomedia and red hind tibia and scutellum.

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.