A new palaearctic species of the chalcidoid wasp genus Idiomacromerus (Hymenoptera, Torymidae)

摘要

A new species of chalcidoid wasp, Idiomacromerus korneyevi is described from Kirghizia (type locality Orto-Tokoi). The species is closely related to I. longicornis Askew from Spain, differing in the round female abdomen, shorter flagellar segments,coloration, and biology. The holotype and paratypes of the new species are deposited in the collection of the Institute of Zoology, National Academy of Sciences of Ukraine. In an unidentified material from Kirghizia deposited at the Institute of Zoology,National Academy of Sciences of Ukraine, a new species, ldiomacromerus korneyevi (type locality Orto-Tokoi) has been revealed. The new species is closely related to I. longicornis described from Spain by Askew (1997). These two species form a small, butvery distinctive group within the genus ldiomacromerus. The species are distinguished from the congeners by the long ovipositor (virtually as long as the body), distinctively infuscate (as if smoked) disc of the fore wing with narrow pale stripe in itscenter, and especially in the structure of 1st and 2nd anelli of the flagellum: 1st anellus almost as long as wide, markedly smaller than the 2nd one; the latter as wide as succeeding segments. Both species inhabit the arid part of the Palaearctic Region, being associated with Salsola and Nitraria. The new species is named for its collector, dipterologist V.A. Korneyev. The holotype and paratypes are deposited at the Institute of Zoology, National Academy of Sciences of the Ukraine, Kiev.