Cobunus rufigaster, Riedel, 2013

Riedel, M., 2013, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Southeastern Asia: 2. Tribe Heresiarchini, Linzer biologische Beiträge 45 (2), pp. 2025-2076 : 2031

Cobunus rufigaster nov.sp. ( fig. 10 )

Holotypus (): " Taiwan, Taoyuan Co. Tungyenshan-Region, Shayin ca. 500 m, ca. 24 49´N / 121 23´E, 22.XI.2002, leg. W. Schacht et al." (ZSM)

D e s c r i p t i o n of: Body length 20 mm. Flagellum slightly lanceolate, with 45 flagellomeres, first flagellomere (without anellus) 3.0x as long as wide, the two basal flagellomeres together 0.75x as long as compound eye, the widest ones about 1.7x as wide as long. Temple parallel behind the eye, roundly narrowed behind, with dense puncture. Distance of lateral ocellus to eye about 1.4x as long as its diameter. Frons smooth below, with some fine oblique striation above, face with scattered puncture, clypeus slightly concave, almost smooth. Malar space about 0.75x as long as the width of mandibular base. Genal carina reaches hypostomal carina far from mandibular base.

Mesosoma with fine dense, short whitish hairs. Notauli impressed anteriorly. Mesoscutum with very fine and dense puncture, matte; mesopleurum and metapleurum with coarse striated puncture, coxal carina strong. Scutellum strongly convex, about as long as wide, with lateral carina in the basal half, with striated puncture. Propodeum strongly rounded, with coarse rugulose puncture. Area superomedia strongly elevated, 2x as wide as long, sickle-shaped, smoothened. Coxa III with dense puncture, without scopa. Femur III with coarse puncture, about 4.1x as long as high.

Areolet almost quadrangular, frontal distance of intercubiti about 1x their diameter. Nervulus slightly postfurcal.

Metasoma oxypygous. Postpetiole with a typical strong hump medially, densely punctured. Gastrocoelus deeply impressed. Thyridium very large, transverse, about 2.5x as wide as the thyridial interval. Second tergite 0.9x as long as wide. Tergites 2-3 densely punctured and striate medially (tergite 4 in the basal half only), tergite 5 with very superficial puncture, shining. Ovipositor sheath short, not extending the metasomal apex.

Colour: reddish-yellow. Flagellum reddish on basal 6 flagellomeres, becoming yellowish from the seventh to fourteenth flagellomere, apical flagellomeres black. Mesoscutum with three wide brown stripes. Blackish are a lateral spot on pronotum, anterior margin of mesopleurum and of propodeum, coxal area, and apex of area petiolaris. Wings yellowish including the pterostigma, not distinctly infuscate apically.

unknown.

Remark: The new species is characterized by its completely yellowish-red metasoma, the wing colour resembles C. pallidiolus MATSUMURA.

D i s t r i b u t i o n: Taiwan.

Figures

Fig. 9-12: Mesosoma from lateral: (9) Aglaojoppa nepalensis nov.sp.; (10) Cobunus rufigaster nov.sp.; (11) Heresiarches rufocoxatus nov.sp.. (12) Tyloids on flagellomeres 12-16 of Heresiarches tyloidus nov.sp..