Ichneumon ruficephalus, Riedel, 2019

Riedel, Matthias, 2019, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Nepal, Linzer biologische Beiträge 51 (2), pp. 1119-1162 : 1139-1140

Ichneumon ruficephalus nov.sp. ( fig. 32 )

Holotype: ♀ " Nepal Prov. Karnali, Gothichaur 29°11´54´´N 82°18´36´´E, 06.VI. 007, 2900 m, leg. F. Creutzburg " (Erfurt).

Paratype: ♀ " Nepal: Mahakali / Darchula vic. Thaisan around Brum (holy) lake, N 29°52´16´´ E 80°41´21´´, 20.VI.2017 3600 m, leg. A. Weigel ♂ 17-09" ( Erfurt ).

D e s c r i p t i o n: ♀: Body length 14.2-14.7 mm. Flagellum stout, slightly lanceolate, with 42-44 flagellomeres; 1 st flagellomere 1.7x longer than wide, 7 th flagellomere square; preapical flagellomere 0.7x as long as wide. Temple moderately and almost linearly narrowed behind eye, dorsally 0.7x as long as eye. Distance of lateral ocellus to eye 1.7x ocellar diameter. Frons and vertex coarsely rugose-punctate, matte. Face densely punctate, with transverse rugae centrally. Clypeus and gena with dense punctures. Malar space 1.4x longer than width of mandibular base and 1.5x longer than 1 st flagellomere. Genal carina reaching hypostomal carina far from mandibular base; hypostomal carina low.

Mesosoma coarsely rugose-punctate. Notaulus impressed at frontal margin of mesoscutum. Scutellum slightly convex, wider than long, with scattered punctures, without lateral carina. Propodeum coarsely rugose-punctate. Area basalis trapezoid, 2x wider than long. Area superomedia about square, slightly widened apically; costula absent. Hind coxa densely punctate, without scopa. Hind femur basally and in ventral third with scattered punctures, 4.1-4.4x longer than wide. Claws not pectinate.

Areolet pentagonal, frontal distance of intercubiti c. 4x their width. Nervulus postfurcal.

Metasoma oxypygous. Postpetiolus strongly widened apically, dorsal carina present. Median field with fine dense aciculation, lateral field striate and punctate. Gastrocoelus strongly impressed and with coarse ridges. Thyridium almost transverse, c. 0.7x as wide as the interval. 2 nd tergite 1.2x wider than long. 2 nd and 3 rd tergites densely and finely rugose-punctate; 2 nd tergite aciculate medially. 4 th tergite superficially punctate, shining.

Colour: Head reddish; occiput, area around antennal sockets, lateral stripes between face and clypeus, and labrum black. Antenna tricoloured: Scape, pedicle and flagellomeres 1- 7 red, flagellomeres 8-14 with ivory rings, distal flagellomeres black. Mesosoma black; mesoscutum ±, collare, wide upper margin of pronotum, tegula and subtegular ridge red. Scutellum yellow. Metasoma red, 6 th and 7 th tergites with median ivory spots. Coxae and trochanters black, with external reddish stripes in holotype. Femora, tibiae and tarsi red; all femora in paratype with ventral blackish stripes. Wings yellowish, pterostigma reddish-yellow.

♂ 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. ♀.