Hirtolabus HEINRICH, 1974

A. M, 2009, Illustrated key to the tribes of subfamilia Ichneumoninae and genera of the tribe Platylabini of world fauna (Hymenoptera, Ichneumonidae), Linzer biologische Beiträge 41 (2), pp. 1317-1608 : 1480-1481

15. Hirtolabus HEINRICH

Hirtolabus HEINRICH 1974 - Ann. Zool. Wars. 32: 137-139.

Type species Hirtolabus alienoris HEINRICH.

Distribution: Oriental Region. Burma.

I n t r o d u c t i o n:

The genus is characterized by the following set of characters, making it different from other genera of Platylabini : 1 – occipital carina is sharply abrupt at the level of genae; hypostomal carina from base of mandibles to the level of occipital carina (abscissula) is lamellate broadened; between them and gena distinct impression is formed, 2 – propodeum is elongated; horizontal part is slightly longer than area posteromedia; area superomedia is approximately three times longer than width, rectangular, 3 – thorax, especially metapleurae and sloped part of propodeum is with dense whitish pubescence, 4 – medial part of second tergite from base to middle is longitudinally striated.

M o r p h o l o g y:

F l a g e l l u m: Bristle-shaped, not widened beyond middle, with white annulus; basal segments long. Flagellum of males with pronounced elongated tyloides.

H e a d: Head contour from front narrowed downwards, genae long; temples, from above roundly narrowed behind eyes, from lateral widened below middle. Occipital carina sharply abrupt at level of genae, hypostomal carina from mandible base to level of occipital carina lamelliform, between abscissula and gena distinct impression forms; mandibles with form character to Platylabini , gradually narrowed behind base to apex; clypeus convex, transversal, with straight front margin, distinctly separated from face by impression; middle field of face distinctly protrude and bordered by deep lateral impressions; antennal cavities of not great size, deep, with strong tooth between antennal fossae.

T h o r a x: Transverse furrow of pronotum not interrupted by keel; pronotal ridge not thickened; pronotal base gradually sinuously curved. Mesonotum moderately convex, some wider than length, notauli marked in front third; surface of mesonotum with very dense rough punctuation; subalarum high, thin, not sharpened; sternauli not expressed; scutellum comparatively slightly elevated above postscutellum, laterally carinated by slightly bent outside carinae, its horizontal part slightly convex. Hind margin of metanotum with bacilliform projections. Propodeum from lateral long, horizontal part only some slanting backwards; costulae and coxal carinae not developed, area superomedia longer than width approximately three times; carina dentipara externa straight and parallel to lateral carina of area superomedia; apical transverse carina high; areae dentiparae with small denticles at apex; costulae and coxal carinae absent; spiracles longish-oval, of moderate size. Surface of area superomedia cellular; metapleurae and vertical part of propodeum with dense white pubescence.

L e g s: Strong, long.

W i n g s: Areolet quadrangular; radius slightly sinuous, long; nervulus interstitial. Front wing shorter than body length.

A b d o m e n Of females longish-oval; sheath of ovipositor slightly protrude behind apex of abdomen. Petiolus distinctly flattened, from lateral gradually transform to postpetiolus, lateral carinae distinct; from above postpetiolus considerably broadened in comparison with petiolus; middle field of postpetiolus slightly elevated, but rather distinct. Gastrocoeli moderately deepened, long with distinct slightly oblique thyridia, interval narrower than breadth each of them; second tergite of females uniformly roughly longitudinally striated approximately up to middle, of males roughly wrinkly-punctured; lunulae distinct, tergites 3-4 densely, but delicate punctured. Hypopygium from below triangle, without longitudinal fold, at apex membranous.

C o l o r a t i o n: Head and thorax mainly black with yellowish-white pattern. Abdomen red-brown with darkened first and middle part of second tergites and yellow border apically of all tergites.