Coelichneumon (Coelichneumon) laoticus, 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 : 2035-2036

Coelichneumon (Coelichneumon) laoticus nov.sp. ( fig. 14 )

H o l o t y p u s (): Laos: Phongsali Prov., Oa Tai vill., 21 50´N 102 18´O, 19-30.V.2008, leg. Li (Coll. RIEDEL)

D e s c r i p t i o n of: Body length 27 mm. Flagellum moderately lanceolate, with 56 flagellomeres, first flagellomere about 2.2x as long as wide, the second 2.0x, both segments together 0.57x as long as the compound eye, about 10th flagellomere square, widest flagellomeres about 2x wider than long. Temples slightly narrowed behind eye, seen from lateral as wide as eye. Distance of lateral ocellus to compound eye about 1.4x its diameter. Frons with transverse rugae, shining. Face with dense puncture, clypeus with dense coarse puncture, shining and with long projecting hairs. Gena below with dense puncture, malar space 0.6x as long as the basal mandibular width, with narrow granulated longitudinal stripe. Hypostomal carina not elevated.

Mesosoma with pale brownish hairs. Sides of pronotum with dense puncture dorsally, ventrally with strong striae. Notaulus impressed in the anterior 1/4. Lateral fields of mesoscutum with dense puncture, granulated but shining. Mesopleurum and metapleurum with coarse rugulo-puncture. Scutellum about as long as wide, without lateral carina and with dense puncture. Area superomedia barrel-shaped, slightly longer than wide, with fine transverse striation, basal and apical carinae indistinct. costula indistinct. Late- ral carinae of area petiolaris strong, area petiolaris finely rugulose. Coxae II and III with dense puncture, coxa III finely granulated, with strong brown scopa of about 1/4 of coxal length. Femur III about 3.2x as long as high, with dense puncture. Third tarsomere II about 1.3x as long as wide.

Areolet pentagonal, frontal distance of intercubiti 3x its diameter, 2mcu reaching areolet lateral to its middle. Nervulus postfurcal.

Postpetiole moderately widened. Lateral field of postpetiole with scattered puncture, smooth, 0.7x as wide as the median field, median field striate, with about 15 fine longitudinal striae. Gastrocoelus large, with longitudinal striae. Thyridium oblique, about 0.8x as wide as the thyridial interval. Second tergite about 0.95x as long as wide, with median longitudinal striation, laterally as third tergite with fine granulation and dense puncture. Ovipositor sheath seen from dorsal about 0.3 as long as the tergite 7. Apical sternites, tergites and ovipositor sheath with long and projecting dark hairs.

Coloration: black. Yellowish are a ring on flagellomeres 7-20, palps, mandibular base, labrum, sides of clypeus, face, malar space, gena, complete orbits, collare and wide upper margin of pronotum, two longitudinal stripes on mesoscutum, wide longitudinal stripe on mesopleurum, spot on tegula, subtegular ridge, coxae I-II, all trochanters and trochantelli. Coxa III with yellowish marks. Legs otherwise reddish-yellow, femur I caudally black. Wings yellowish tinged, pterostigma dark brown.

unknown.

R e m a r k: In the key of HEINRICH (1968a), the new taxon runs to Coelichneumon piceipennis (MORLEY 1915) , syn. C. fuscipennis (CAMERON) praeocc., but differs by its unusual large size and completely yellowish scutellum. The colour pattern is similar otherwise. This specimen might therefore represent a subspecies of C. piceipennis (MORLEY) only.

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

Figures

Fig. 13-16: Propodeum of (13) Coelichneumon flavotibialis nov.sp.; (14) Coelichneumon laoticus nov.sp.; (15) Coelichneumon ocellus (TOSQUINET); (16) Coelichneumon pieli UCHIDA.