Ischnojoppini HEINRICH

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 : 1353-1354

Tribe Ischnojoppini HEINRICH

Ischnojoppini HEINRICH 1938 - Mem. de l'Acad. Malgache 25: 117.

Type genus: Ischnojoppa KRIECHBAUMER.

Ischnojoppini : HEINRICH 1968 - Ichn. Stenop. of Africa 1: 213, 216-217.

D i s t r i b u t i o n: Mainly Ethiopian Region, including Madagascar; only one species is known from Oriental Region.

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

Head and structure of mandibles of this tribe are almost identical with such of Listrodromini . For Ischnojoppini slender and elongated body is characteristic. They are distinct from Listrodromini by structure of usually elongated propodeum, that usually considerably longer than vertical part in type genus and area superomedia, if present, several times longer than width, and additionally, by morphology of flagellum of both sexes. Rare, for Pseudischnojoppa HEINRICH horizontal part is only slightly longer than width. By coloration Ischnojoppini do not demonstrate any resemblance with Listrodromini . Areolet is usually pentagonal, strongly narrowed in front. Claws are smooth, never pectinate. Abdomen is cylindrical, second and third tergites of abdomen considerably longer than width, of females oxypygous, rare, semiamblypygous with usually projecting sheath of ovipositor.

M o r p h o l o g y:

F l a g e l l u m: Of females, moderately long, bristle-shaped, lanceolate, strongly flattened ventrally and usually strongly widened beyond middle, strongly attenuated toward apex, of females always, of males sometimes with white annulus. Flagellum of males nodose, with distinct transversal ridges and long row of rather weak or indistinct tyloides.

H e a d: Head contour from front with long genae; genae from lateral extraordinary broad in comparison with eyes, which comparatively small and slightly convex; clypeus, face and malar space forming single, slightly convex surface, without traces of sutures, impressions or elevations. Occiput deeply concave; temples very long, not narrowed or slightly narrowed behind eyes; malar space at least equal to mandible base width, at genus Ischnojoppa considerably longer, sometimes two times longer than mandible base width; mandibles broad, with long large teeth situated in the same plane and with wide gape; antennal cavities moderately deep; ocelli small; ocellar triangle elevated and clearly expressed.

T h o r a x: Collar of pronotum very long, of Ischnojoppa with lamellae. Mesonotum moderately convex, of equal length and breadth, sometimes some longer than width in middle; notauli usually rather distinct basally, or at least marked; sternauli fully absent; scutellum strongly elevated above postscutellum, rather short and apically rounded, dorsally strongly convex, laterally carinated by high carinae, from apex abruptly slanted. Hind margin of metanotum with triangular projections. Propodeum from lateral usually of broken type, although often gradually slanting backwards, long, horizontal part longer than vertical, usually approximately two times, slightly shorter only of Pseudischnojoppa; areas of propodeum usually indistinct or partially atrophied; area superomedia, if distinguishable, much longer than width, merged with area basalis and gradually narrowed to apex; at Pseudischnojoppa with complete set of carinae; spiracles of propodeum long.

L e g s: Slender, moderately long; hind coxae of females sometimes with indistinct scopa; claws smooth.

W i n g s: Areolet pentagonal, narrow in front; radius sinuous or almost straight; nervulus usually interstitial, of some species strongly postfurcal.

A b d o m e n Narrow, parallel sided, elongated; abdomen of females usually with sharpened apex, oxypygous, with slightly projecting ovipositor, as exception at one species blunted, semiamblypygous with cut last tergite and hidden ovipositor. First tergite not flattened at base, narrow, from lateral without sharp break to postpetiolus, from above distinctly broadened to postpetiolus; middle field of postpetiolus convex, but laterally indistinctly separated, wrinkly-punctured, sometimes more or less distinctly longitudinally striated. Gastrocoeli rather deep, with approximately quadrangular contour, thyridia distinct, interspace between them striated; lunulae absent; tergites 2-5 distinctly longer than width, densely sculptured and semimatt; hypopygium of males, rather short, apically broadly and bluntly rounded.

C o l o r a t i o n: Main color lightly ferruginous or yellowish, sometimes with limited white anal spots; apices of hind femora and tibiae of type species of Ischnojoppa and of some African species black.