Coelichneumon (Exephanides) sichuanensis, 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 : 2042-2043

Coelichneumon (Exephanides) sichuanensis nov.sp. ( figs 18 , 39 )

H o l o t y p u s (): " China S. Sichuan pr., mts Dafengding, 3100 m, 50 km N Meiju, 14-16.VIII.2007, S. Murzin" (Coll. RIEDEL).

D e s c r i p t i o n of: Body length 16 mm. Flagellum strongly lanceolate, with 39 flagellomeres, first flagellomere (without anellus) about 2.0x as long as wide, the second 1.8x, both segments together 0.57x as long as the compound eye, about the 8th flagellomere square, widest flagellomeres about 3x as wide as long. Temple strongly and almost linearly narrowed behind eye, seen from lateral at most 0.8x as wide as eye. Distance of lateral ocellus to compound eye about 1.2x its diameter. Frons with very scattered puncture, almost smooth and strongly shining. Face and clypeus with scattered puncture, puncture getting very scattered laterally, smooth. Gena with very scattered puncture, malar space 1.3x as long as the basal mandibular width, with narrow granulated longitudinal stripe. Hypostomal carina not elevated.

Mesosoma with whitish hairs, Sides of pronotum with fine puncture dorsally, ventrally with some striae. Notaulus impressed anteriorly. Lateral field of mesoscutum with very fine and scattered puncture, smooth. Mesopleurum and metapleurum with coarser but scattered puncture. Scutellum about as long as wide, with lateral carina in the basal 0.2, with very scattered fine puncture. Area superomedia horseshoe-shaped, slightly longer than wide, almost smooth, basal and apical transverse carinae indistinct. costula basal to its middle. Lateral carina of area petiolaris obsolete, the area rugose. Coxa II with scattered puncture apically, coxa III finely rugulose in the basal half, with fine puncture and granulation apically, with distinct whitish scopa. Femur III about 4.6x as long as high, with scattered puncture in the lower half. Third tarsomere II about 1.9x as long as wide. Claws large, apically bent by about 90.

Areolet almost quadrangular, frontal distance of intercubiti 1x their diameter, 2mcu reaching areolet lateral to its middle. Nervulus postfurcal.

Metasoma slender. Postpetiole only slightly widened. Lateral field of postpetiole smooth, 0.7x as wide as the median field, median field striate, with about 8 strong longitudinal striae. Gastrocoelus large, with longitudinal striae. Thyridium very oblique, about 1.5x as wide as the thyridial interval. Second tergite about 1.3x as long as wide, with median longitudinal striae, laterally with fine granulation, shining, third tergite with median striation in the basal half, as the following tergites with fine granulation and shining. Seen from dorsal, ovipositor sheath about 0.2 as long as the tergite 7.

Coloration: Whole body with strong metallic shine. Head and mesosoma copper-metallic; flagellum, propodeum, metasoma, and legs strongly metallic blue. Flagellomeres 9- 13 with ivory stripe. Femora I-II apically and tibia I frontally reddish-yellow. Pterostigma yellowish-brown. Wings slightly darkened.

unknown.

R e m a r k: The new species runs to Coelichneumon godwinaausteni (CAMERON) in HEINRICH´ s key, but is clearly different by the form of metasoma. Additionally, the head has no ivory colour pattern, and head and mesosoma show a strong metallic shine.

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

Figures

Fig. 17-20: Propodeum of (17) Coelichneumon sabahensis nov.sp.; (18) Coelichneumon sichuanensis nov.sp.; (19) Cratojoppa scutellata nov.sp.; (20) Euheresiarches amoenus HEINRICH.

Fig. 37-42: Metasoma from dorsal of (37) Atanyjoppa sumatrana HEINRICH; (38) Coelichneumon sabahensis nov.sp.; (39) Coelichneumon sichuanensis nov.sp.; (40) Cratojoppa scutellata nov.sp.; (41) Ileanta fulvipes CAMERON; (42) Trogichneumon maculatus nov.sp..