Abzaria CAMERON

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 : 1537-1539

36. Abzaria CAMERON

Abzaria CAMERON 1885 - Biologia Centrali-Americana. Insecta . Hymenoptera 1: 201.

Type species: Abzaria latipetiolaris CAMERON.

D i s t r i b u t i o n: Neotropical ( Mexico) Region, 1 species.

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

The genus is characterized by specific morphology of the head: lateral margins of the frons are limited by high elevation and there are two lamellar protuberances between antennal cavities. These characters simultaneously are not registered in others genera of Platylabini . Only elevated lateral margins of frons are recorded at Notoplatylabus HEINRICH genus. Propodeum is strongly shortened, transversal; the fields of horizontal part are absent; apical transverse carina at corners on place of the apophysises is lamellate broadened (as of Pyramidophorus ). Abdomen is with strong constrictions between segments (as of Rugosculpta (tribe Ichneumonini )). First tergite is unusually broad, equal by breadth to propodeum between the lamellate projections at apex, sharply narrowed only at the very base. The segments of tarsi of all the legs are flattened ventrally and uniformly covered by very dense short bristles. Gastrocoeli are only just impressed and situate near the base of second tergite, thyridia absent. Lunulae on second tergite of abdomen are completely absent, even in a form of trace. Surface of a body is smooth, polished, without microsculpture.

M o r p h o l o g y:

F l a g e l l u m: Of female bristle-shaped, with white annulus, beyond white annulus slightly widened and flattened ventrally, gradually attenuated toward apex; segments of flagellum distinctly differentiated; basal segments moderately elongated. Flagellum by length approximately equal to front wing and shorter than body length.

H e a d: Head contour narrowed downwards, genae long; occipital carina meeting with hypostomal carina not reaching mandible base; mandibles with very long upper tooth; clypeus transversal, slightly convex with straight front margin and rounded lateral corners; antennal cavities deeply impressed, laterally limited by high elevations; frons between antennal fossae with strong and sharp interantennal tubercle, between antennal cavities with two high plastic projections; ocellar triangle strongly expressed, limited laterally by deep cavities. Surface of head polished.

T h o r a x: Collar of pronotum normal; transverse furrow of pronotum not interrupted by keel; pronotal ridge not thickened; pronotal base smooth, gradually, uniformly curved. Mesonotum moderately convex, notauli only marked at base; subalarum thick; sternauli completely absent; scutellum slightly convex, smooth, not carinated laterally, gradually sloping from scuto-scutellar furrow to postscutellum. Hind margin of metanotum without triangle projections. Propodeum strongly shortened, transverse; areas of horizontal part not limited by carinae; apical transverse carina lamellate broadened at place of apophysises; coxal carina developed; spiracles slit-shaped. Surface of propodeum polished.

L e g s: Long and strong. Segments of tarsi of all legs ventrally flattened. Claws thin, smooth.

W i n g s: Areolet quadrangular. Front wing shorter than body length.

A b d o m e n Longish-oval, strongly sclerotized, segments divided by deep constriction, apical tergites not hidden, visible from above. First tergite extremely broadened, laterally carinated; postpetiolus by breadth equal to distance between lamellate projections at apex of propodeum. Gastrocoeli only just visible impressed only at base of second tergite, thyridia absent; lunulae absent; surface of abdomen shining, polished. Hypopygium triangle with rounded apex, without fold.

S i z e: Large ichneumon flies, 13 mm.

C o l o r a t i o n: Black-yellow coloration, with predominance of yellow.