Ichneumonini ASHMEAD

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 : 1369

Tribe Ichneumonini ASHMEAD

Ichneumonini ASHMEAD 1895 - Proc. Ent. Soc. Wash. 3: 279.

Type genus: Ichneumon LINNAEUS.

Amblytelini TOWNES 1944 - Mem. Am. Ent. Soc. 11: 319.

Type genus: Amblyteles WESMAEL.

Joppini TOWNES 1961 - Mem. Am. Ent. Inst. 1: 341.

Type genus: Joppa FABRICIUS.

Ichneumonini : HEINRICH 1967 - Ichn. Stenop. of Africa 1: 26, 3: 485-486.

Ichneumonini : HEINRICH 1977 - Ichn. Florida and Neigb. States 9: 57.

D i s t r i b u t i o n:World-wide.

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

There is only one character, common to all genera of the tribe, structure of propodeum, which has «broken» form, i.e. distinctly separated on horizontal and declivous parts, meeting under angle of carinae dentiparae interiores and apical carina of area superomedia. All other parts by importance, mandibles, antennae, clypeus, head, scutellum, thyridia and abdomen show all possible variety of structures. Therefore, the diagnostic of this tribe is based mostly on the exceptions than on combinations of common real characters.

The tribe differs from Protichneumonini , Trogini and Compsophorini by structure of broken type propodeum, divided on distinct horizontal and declivous parts thus, that apex of area dentipara is far removed from hind coxae, and its surface does not fall arcuate to base of hind coxae. The apices of areae dentiparae have tendency to forming teeth and apophysises. It differs from Platylabini and Eurylabini by not flattened at base petiolus, from Listrodromini , Compsophorini and Listrodromini by distinct division of head surface on clypeus and fields of face, from Alomyini and Phaeogenini by usually long, more often slit-shaped spiracles, which are roundish only as an exception ( Neischnus HEINRICH ).

Tribe Ichneumonini is connected by intermediate forms with other tribes to a greater extent than any other one. Thus, African subtribe Apatetorina (Protichneumonini) is transitional between Ichneumonini and Protichneumonini , species of genus Barichneumon of groupe peregrinator LINNAEUS connect it with Phaeogenini , group of genera Plagiotrypes ASHMEAD (Neopyga HEINRICH Hymenura TOWNES ) similar by mandibles morphology to Joppocryptini , pretending by peculiarities of apex of abdomen morphology on independent tribal status. The number of such samples is numerous.

G. Heinrich single out five subtribes: Cratichneumonina , Ichneumonina , Amblytelina , Hoplismenina and Aethioplitina .