Ogulnia rufiventris, Riedel, 2019

Riedel, Matthias, 2019, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Nepal, Linzer biologische Beiträge 51 (2), pp. 1119-1162 : 1145-1146

Ogulnia rufiventris nov.sp. ( figs 42, 45, 46 )

Holotype: ♂ "562 Nepal: Dailekh Distr. , N Dailekh, 1600 m, 1.-2.VI.1998, leg. G. Miksch " ( ZSM). D e s c r i p t i o n: ♂: Body length 16.3 mm. Flagellum bristle-shaped, with 43 flagellomeres; 1 st flagellomere 2.7x longer than wide. Tyloids on flagellomeres 4-18, longoval, longest tyloids c. 0.6x as long as their flagellomeres. Temple long, moderately and almost linearly narrowed behind eye, dorsally 0.8x as long as eye. Distance of lateral ocellus to eye 1.2x ocellar diameter. Head with fine punctures, shining; face with fine granulate and dense punctures. Clypeus smooth, with scattered punctures; apical margin slightly bi-concave, with strong median tooth. Malar space 0.3x as long as width of mandibular base. Genal carina reaching hypostomal carina close to mandibular base. Mesosoma covered with short grey hairs. Notaulus impressed in frontal 1/5 of mesoscutum. Mesoscutum with fine, dense punctures, ± shining. Mesopleuron with dense punctures and some fine striae ventrocaudally. Scutellum moderately convex, about as long as wide, with strong lateral carina in its basal 0.8. Area superomedia 1.3x longer than wide, rounded frontally and with slightly narrowed sides apically; costula present, reaching area superomedia in its frontal 0.25. Hind femur 3.9x longer than wide. Claws strong, without teeth.

Areolet pointed frontally; 2 nd recurrent vein slightly proximal to its middle. Nervulus slightly postfurcal.

Metasoma slender. Postpetiolus slightly widened, with dense punctures. Gastrocoelus slightly impressed, 2x longer than wide. Thyridium weak, oblique, 0.25x as wide as the interval. 2 nd tergite 1.35x longer than wide. 2 nd to 4 th tergites with fine dense punctures, ± shining.

Colour: Black. Cream yellow are palps, mandible except teeth, clypeus, face, ventral 2/3 of gena, stripe on frontal orbit, scape ventrally, propleuron, frontal and upper margins of pronotum, tegula, subtegular ridge, large spot in ventral mesopleuron and mesosternum, central spot on mesoscutum, apical spot on scutellum, spot on postscutellum, upper division of metapleuron, area posteroexterna, all coxae and trochanters (hind coxa and trochanter with lateral black stripes). 1 st tergite black; metasoma otherwise reddish. Fore and mid femora, tibiae and tarsi reddish; femora with ventral brownish stripes. Hind femur reddish-brown; hind tibia reddish-yellow, brown in apical 0.2; hind tarsus brown. Wings hyaline pterostigma dark brown.

♀ unknown.

R e m a r k: This new species differs from all other known Ogulnia -species by its carinate scutellum, densely punctate postpetiolus and red metasoma without yellow or ivory colour patterns.

Figures

Figs 41-46: Ogulnia maculata nov.sp. ♂: (41) face, (43) propodeum, (44) basal tergites; Ogulnia rufiventris nov.sp. ♂: (42) face, (45) propodeum, (46) basal tergites.