Ichneumon nepalensis, Riedel, 2019

Riedel, Matthias, 2019, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Nepal, Linzer biologische Beiträge 51 (2), pp. 1119-1162 : 1137-1138

Ichneumon nepalensis nov.sp. ( fig. 30 )

Holotype: ♀ " Nepal, Maharigaon Nörd. 29°20´24´´N 82°23´21´´E, 3400 m, 20.06.1997, leg. Creutzburg " ( SDEI).

D e s c r i p t i o n: ♀: Body length 12.5 mm. Flagellum filiform, with 36 flagellomeres; 1 st flagellomere 1.9x longer than wide, c. 10 th flagellomere square; widest flagellomeres 1.6x wider than long; preapical flagellomere 0.7x as long as wide. Temple moderately and roundly narrowed behind eye, dorsally 0.75x as long as eye. Distance of lateral ocellus to eye 1.1x ocellar diameter. Occiput with transverse rugae. Frons coarsely rugose-punctate. Face and clypeus with scattered punctures, intervals smooth and shining. Gena as wide as eye, with very scattered punctures ventrally. Malar space 1.25x longer than width of mandibular base. Mandible narrow; lower tooth smaller than upper one. Genal carina reaching hypostomal carina away from mandibular base; both carinae low.

Mesosoma covered with reddish hairs. Side of pronotum rugose dorsally and coarsely striate ventrally, collare irregularly striate. Notaulus impressed in frontal fifth of mesoscutum. Mesoscutum densely rugose-punctate. Mesopleuron coarsely punctate and striate. Metapleuron coarsely rugose; juxtacoxal carina present. Scutellum slightly elevated and slightly wider than long, with scattered punctures, without lateral carina. Propodeum coarsely rugose. Area superomedia trapezoid, 1.3x longer than wide; costula weak. Area petiolaris rugose, with transversal striation apically, lateral carina present. Hind coxa densely punctate, with strong scopa (1/4 of coxal length). Hind femur densely punctate, 3.8x longer than wide. Claws not pectinate.

Areolet pentagonal, frontal distance of intercubiti c. 2x their width; 2 nd recurrent vein in its middle. Nervulus postfurcal (by 3x its width).

Metasoma oxypygous. Postpetiolus strongly widened apically, without dorsal carina. Lateral field c. 0.55x as wide as median one; both fields with coarse aciculation. Gastrocoelus distinctly impressed and with strong ridges. Thyridium slightly oblique, c. 0.65x as wide as the interval. 2 nd tergite 1.2x wider than long. 2 nd tergite finely and densely rugose-punctate, matte. 3 rd tergite with dense fine punctures, slightly shining. Following

tergites with fine granulation and very superficial punctures, shining. Ovipositor sheath slightly extending behind metasomal apex.

Colour: Black. Head reddish; base of mandible, median frons, stemmaticum and occiput black. Antenna tricoloured; scape, pedicle and flagellomeres 1-8 (except black base of 1 st flagellomere) red; flagellomeres 9-15 ivory, distal flagellomeres black. Mesosoma black; collare, wide upper margin and ventral edge of pronotum, tegula, subtegular ridge, mesoscutum laterally and (paler) stripes at notauli, and postscutellum red. Scutellum ivory. Metasoma black; base of petiolus, postpetiolus and 2 nd to 3 rd tergites red. 6 th and 7 th tergites with wide ivory median spots. Coxae and trochanters black, ± red apically. Legs otherwise red; all femora with diffuse brownish stripes ventrally. Wings slightly yellowish infuscate; pterostigma yellowish.

♂ unknown.

Figures

Figs 30-33: Habitus from dorsal: (30) Ichneumon nepalensis nov.sp. ♀, (31) Ichneumon politoventris nov.sp. ♀, (32) Ichneumon ruficephalus nov.sp. ♀, (33) Ichneumon tricoloratus nov.sp. ♀.