Heinrichiellus, A.M, 2009

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 : 1535-1536

35. Heinrichiellus nom.nov.

Heinrichia TERESHKIN 1996 , Entomofauna 17 (5): 89-96.

Type species: Heinrichiellus hildegardae (TERESHKIN)

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

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

Originally Heinrichiellus was described as a genus with vague systematic position ( TERESHKIN 1996). But, habitually, it is more close to the tribe Platylabini , in spite of absence of flattened at the base petiolus. Habitually it is differs from other genera of the tribe by very slender elongated body, unusually slender and long legs and by slender flagellum, exceeding the body length and the length of front wing. Besides, it has, roundly from above head with strongly convex clypeus, long genae, lacking antennal cavities and extremely long and thin maxillary palps, mesonotum with sharp sternauli, developed on all length of mesopleurae and high elevated scutellum, propodeum with strongly developed, long and pointed apophysises deviating perpendicularly from surface of propodeum, by long but not flattened petiolus, by the gastrocoeli in form of longitudinal furrow with thyridia in a form of point. All these signs place the genus in special position on-comparison with others Platylabini . Flagellum of male is without tyloides.

Such characters, as slender and long bristle-shaped flagellum, convex clypeus, form of mandibles, high elevated scutellum, morphology of propodeum, peculiarities of the abdomen morphology with character hypopygium, let alone the small size and habitual similarity, testify to belonging of the genus to the tribe Platylabini . Therefore, such character as high and not flattened at base petiolus, not fitting in Platylabini characteristic, can not prevail all listed characters. Especially as, the analyses of the characters of the genera of a world fauna in a comparative aspect shows presence of many exceptions from the set of tribal characters (morphology of clypeus, presence of tyloides of males and other (see above)), including the absence of fattened base of petiolus of Apaeleticus WESM. first of all of Hypomecus WESM. Therefore , attribution of the genus to the tribe Platylabini may be considered as quite reasonable.

M o r p h o l o g y:

F l a g e l l u m: Of females and males bristle-shaped, very long and slender; Flagellum of males without tyloides.

H e a d: From above rounded; temples long, narrowed behind eyes; mandibles narrow, lower tooth small, situated approximately in same plane with upper one; antennal cavities not expressed; clypeus strongly convex, transversal.

T h o r a x: Pronotal ridge not thickened, epomiae distinct; pronotal base from lateral strongly sinuous. Mesonotum convex, matt; notauli strongly developed; sternauli sharp, reach to middle coxae; scutellum high elevated above postscutellum, carinated laterally and from behind. Hind margin of metanotum with triangle projections. Propodeum gradually slanted to hind coxae practically from area basalis; all carinae, with exception of lateral carinae of area posteromedia sharp; areae dentiparae with very strongly developed sharpened apophysises practically perpendicular to surface of propodeum; spiracles of propodeum long.

W i n g s: Areolet pentagonal; front wings long, narrow, 1,3 times shorter than body.

L e g s: Extremely long and thin.

A b d o m e n First tergite straight from lateral; petiolus very long, rounded in crosssection, not flattened, approximately of equal breadth and height; lateral carinae of petiolus not developed; middle field of postpetiolus slightly expressed. Gastrocoeli slightly impressed, in form of longitudinal groove; thyridia punctiform, far removed from base of second tergite; hypopygium compressed from lateral with longitudinal fold in middle.

C o l o r a t i o n: Basic color of body black or dark-brown.

S i z e: 5,5-7,5 mm