Ichneumon brevitemporalis, Riedel, 2023

Riedel, Matthias, 2023, Five new Oriental species of the genus Ichneumon LINNAEUS (Hymenoptera, Ichneumonidae, Ichneumoninae), Linzer biologische Beiträge 55 (1), pp. 47-60 : 48

Ichneumon brevitemporalis nov.sp. ( Figs 1-4 )

M a t e r i a l e x a m i n e d: Holotype: (♀) China: Yunnan, Tengchong , N 25.016° E 98.466°, 1900 m, 31.v.2009, leg. Blank, Liston, Taeger ( SDEI).

E t y m o l o g y: The species name refers to the unusually short (latin: brevis) temples.

D e s c r i p t i o n: Body length 6.5 mm. Flagellum with 31 flagellomeres, bristle-shaped; 1 st flagellomere 2.9 × longer than wide; about 11 th flagellomere square; widest flagellomeres square; preapical flagellomeres 1.3 × longer than wide. Temple rather short, moderately and linearly narrowed behind eye, dorsally 0.5 × as long as eye. OED 1.2 × and OOD 1.1 × ocellar diameter. Head densely rugose-punctate, ± dull. Face densely rugose-punctate. Clypeus slightly convex, with rather dense punctures, shining; apical margin sharp, straight. Gena with striated punctures dorsally and sparse punctures ventrally. Mandible unmodified and with two teeth; ventral tooth smaller than dorsal tooth. Malar space 0.9 × as long as width of mandibular base.

Notaulus indistinct. Mesoscutum densely rugose-punctate, dull. Mesopleuron including speculum and metapleuron rugose-punctate; juxtacoxal carina present. Scutellum slightly convex, about as long as wide, densely punctate, without lateral carina. Propodeum coarsely rugose-punctate. Area superomedia hexagonal, slightly longer than wide; anterior transverse carina (costula) absent. Hind coxa densely punctate, without scopa or other modifications. Hind femur densely punctate, 3.9 × longer than wide. Tarsi rather slender, 3 rd mid tarsomere 1.8 × longer than wide. Claws simple. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 3 × their width; vein 1cu-a postfurcal by 1 × its width.

Metasoma oxypygous, but hypopygium slightly elongate. Postpetiolus moderately widened; median field finely aciculate, lateral field finely rugose. Gastrocoelus distinctly impressed, with ridges. Thyridium transverse, 0.9 × as wide as interval between thyridia. 2 nd tergite 1.2 × wider than long. 2 nd and 3 rd tergites densely rugose-punctate, 4 th tergite with fine dense punctures. Ovipositor sheath slender, reaching behind metasomal apex by length of 3 rd hind tarsomere.

Color: black. Palps, mandible except teeth, clypeus, gena, face and stripe of frontal orbit, scape, pedicel and basal four flagellomeres reddish. Flagellomeres 8-12 ivory dorsally. Collar, hind edge of pronotum and tegula red. Scutellum cream-yellow. Postpetiolus, 2 nd and 3 rd tergites red. Small apical spot of 5 th tergite and 6 th and 7 th tergites mainly ivory. Coxae and trochanters black; legs otherwise mainly red; hind femur black, red basally and apically; hind tibia red, black in apical 0.2; hind tarsus except brown distal tarsomere red. Wings hyaline; pterostigma ochreous.

♁ unknown.

D i s t r i b u t i o n: Only known from Southern China.

Figures

Figs 1-4: Ichneumon brevitemporalis nov.sp. HT: (1) face, (2) head from dorsal, (3) propodeum, (4) metasoma.