Clypeodromini TERESHKIN

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 : 1334-1335

Tribe Clypeodromini TERESHKIN

Clypeodromini TERESHKIN 1992 - Entomofauna 13 (10): 194-195.

Type genus: Clypeodromus TERESHKIN.

D i s t r i b u t i o n: Palaearctic.

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

A representative of this monobasic tribe possesses combination of the characters which are peculiar to species of different, systematically dissimilar from each other, genera of Ichneumoninae . Habitually it resembles Platylabini , however such characters as petiolus flattened at base, morphology of clypeus, topography of carinae of first tergite, and also proportions of body (relation of front wing and body length) do not indicate to such tribal belonging. At the same time, all key characters, with exception of morphology of clypeus, are met in a form of the exceptions of tribal ones in different genera of Platylabini . Angle-shaped lower margin of pronotum above front coxae, but only expressed in more sharp form, reduced behind ocelli occipital carina and impressed occiput, postscutellum with cellular sculpture is one of the main characters of two representatives of genus Notoplatylabus HEINRICH distributed in Palaearctic and Oriental Regions (HEINRICH 1936, 1974; TERESHKIN 1993). Notoplatylabus HEINRICH and Apaeleticus WESMAEL are marked by interrupted by keel transverse furrow of pronotum. Not flattened petiolus is character for Ectopoides HEINRICH Apaeleticus WESMAEL Hypomecus WESMAEL and Heinrichiellus TERESHKIN. Moreover , such unique character, as pectinate claws of females tarsi is presented by Pyramidophorus Tischbein , also as an exception in the tribe Platylabini . At the same time, convex, although and peculiar clypeus, convex scutellum, delicate body and size, amblypygous abdomen are characteristic for all of Platylabini .

Coloration of body is similar to coloration of Listrodromus nycthemerus GRAVENHORST (Listrodromini) , which common in the same ecosystems (raised bogs). Pectinate claws and interrupted by keel transverse furrow of pronotum, are also characteristic signs of number of genera of this tribe. At the same time, morphology of head is completely not correspond to key character – flat, not differentiated surface of face. More over, such, also slightly expressed character as median pit at border of pronotum and mesonotum is character for genus Alomya PANZER , and ribbed postscutellum and short-oval pneusticae, for Pseudalomya TELENGA ( Alomyini , Ichneumoninae Cyclopneusticae ).

Morphology of the second tergite of Clypeodromus thyridialis is also peculiar. Similar combination of characters is possible more often to found at representatives of tribe Ichneumonini (Cratichneumonina) , at the same time with tooth on basal area of propodeum.

Thus, the such peculiar combination of characters of different systematic categories of Ichneumoninae is good cause, in our opinion, for giving of the tribal status to taxon describing below.

M o r p h o l o g y:

F l a g e l l u m: Slender, bristle-shaped or semi bristle-shaped.

H e a d: Clypeus convex, transverse with leaf-like broadened and elevated above malar space lateral margins. Mandibles almost parallel sided with two teeth situated in the same plane.

T h o r a x: Pronotum with interrupted by keel transverse furrow of pronotum, sharply thickened pronotal ridge and angularly broken above front coxae pronotal base; sternauli long and deep in front third; scutellum roundly convex, not carinated laterally; metanotum with triangle projections opposite lateral longitudinal carinae; propodeum of broken type with complete carination and small roundish spiracles.

L e g s: Moderately strong. Claws of females tarsi pectinate.

W i n g s: Wings broad; front wing shorter than body length; areolet pentagonal with wide base.

A b d o m e n: Of female amblypygous with slightly sclerotized sternites. Petiolus not flattened at base, dorsomedian and dorsolateral carinae independently reach base of tergite; gastrocoeli and thyridia sharp, large, many wider than interval between them.