Dentilabus variegatus (WESMAEL)

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 : 1523-1525

Dentilabus variegatus (WESMAEL) (Plate 54)

Platylabus variegatus WESMAEL 1844 - Nouv. Mém. Acad. Sci. Bruxelles 28: 156,Ƌ.

Dentilabus variegatus: HEINRICH 1974 - Ann. Zool. Wars. 32 (8): 147.

F e m a l e

F l a g e l l u m: Very slender, long, with 32 segments, not widened and not flattened ventrally beyond middle, gradually attenuated toward apex, with white semiannulus on segments 7-10; basal segments strongly elongated, first segment laterally 4 times longer than width at apex, all segments longer than wide. Flagellum 1,4 times longer than the front wing and 1,1 times longer than body length.

H e a d: Head contour from front roundish, only just transversal, 1,2 times wider than height; genae from front uniformly narrowed downwards; head contour from above rather thick, 1,7 times wider than length. Vertex from lateral behind hind ocelli gradually slanting down to occipital carina; temples from above very strongly roundly narrowed behind eyes, moderately long, 1,8 times shorter than longitudinal diameter of eye in middle, from side parallel to hind margin of eye; occipital carina low, gradually and slightly impressed to hind ocelli far not reach level of eyes, meeting with hypostomal carina not reaching mandible base, lower part of hypostomal carina distinctly visible from lateral; malar space equal to mandible base width; mandibles narrow, strongly and gradually narrowed from base to apex; clypeus strongly convex, only 1,5 times wider than length, with practically straight (slightly gradually rounded) front margin, separated from face by slight impression; clypeal foveae deep, narrow; labrum short, rounded, to all breadth of front margin; middle field of face slightly convex, only just elevated above lateral fields; in middle approximately equal by length to lateral fields; antennal cavities small, deeply impressed, reach margins of eyes and far not reach front ocellus level, with expressed lateral tubercles and strong tooth between antennal fossae; ocelli of normal size, diameter of lateral ocellus some less than distance to eye; ocellar triangle moderately elevated, but not clearly expressed. Surface of face and clypeus with big punctures, shining, without microsculpture; frons above antennal cavities superficially wrinklypunctured.

T h o r a x: Collar of pronotum short; transverse furrow shallow, narrow. Mesonotum strongly convex, of equal length and breadth; notauli practically absent or only just marked at base in form of very slight impressions; surface of mesonotum very densely wrinkly-punctured with developed microsculpture, with only just shine; subalarum thin, but not sharpened; prepectal carina at apex not reach level of pronotum middle, atrophied at upper part; speculum with big punctures slightly shining; area of mesopleural fovea deep, rather narrow; sternauli in form of very slight impression up to middle of mesopleurae; mesopleurae at bottom without sharp bend; surface of mesopleurae densely wrinkly-punctured slightly shining and with developed delicate white pubescence; scutellum convex, from above triangle, laterally carinated up to apex; horizontal part of scutellum uniformly convex with big sparse punctures, without microsculpture. Hind margin of metanotum with triangle projections opposite lateral longitudinal carinae. Propodeum from lateral gradually slanted, practically without angular bend; horizontal part of propodeum 1,5 shorter than length area posteromedia in middle; all carinae of propodeum, except of costulae (sometimes very slightly marked) distinct; basal area short, deep; area superomedia quadrangular, rounded in front, only just shorter than breadth; areae dentiparae with very strong teeth, almost apophysises; spiracles elongated, 3-4 times longer than width, rather large (of moderate size, equal 0,4-0,5 breadth of field at place of spiracle). Horizontal surface of propodeum roughly wrinkly-punctured, without microsculpture, shining; metapleurae wrinkly-punctured.

L e g s: Long and slender. Claws long and thin without sharp bend at apex.

W i n g s: Areolet quadrangular, slightly asymmetrical (external vein of base some longer than internal); stigma long, narrow, light; radius slightly sinuous, long; nervulus interstitial; ramulus distinct; membrane of wing hyaline, veins slightly darkened. Front wing 1,3 times shorter than body length.

A b d o m e n:Fromabove longish-oval, second tergite slightly-transversal, apical ter- gites not hidden and clearly visible from above; sheath of ovipositor only just visible protrude. First tergite from lateral with gradual, but distinct bend to postpetiolus; petiolus broad and flattened at base; dorsolateral and ventrolateral carinae sharp; dorsomedian carina merge with dorsolateral above middle of tergite; surface between lateral carinae of petiolus cellular-wrinkled; postpetiolus from above rectangular, flattened, with slightly expressed, but distinctly elevated middle field, laterally not carinated; lateral fields narrower than middle field; distance between spiracles more than distance from spiracles to apex; surface of middle field slightly irregularly-wrinkled. Gastrocoeli very deep, short, laterally reach to borders of tergite; thyridia sharp, many wider than interval between them, slightly oblique; interval with strong longitudinal impression, wrinkled; lunulae very distinct, large; second and third tergites very densely punctured (interspaces narrower than punctures), apical tergites slightly shining with very delicate superficial punctures, coriaceous. Hypopygium from lateral pointed, compressed.

C o l o r a t i o n: Body black with reach white (yellowish) pattern: spots on vertex and internal orbits, upper corners of pronotum, subalarum, scutellum and postscutellum, bands on apex tergites 1-6 and 7th dorsally completely. Legs mainly ferruginously-red, coxae and trochanters 1 of all legs dark (black).

S i z e: Body length: 7,8; front wing: 6,0; flagellum: 8,5 mm.