Revision of the ichneumon-flies of the genus Ischyrocnemis Holmgren, 1858 with resurrection of the genus Terozoa Förster, 1869 stat. resurr. (Hymenoptera: Ichneumonidae)

D.R. Kasparyan

Proceedings of the Zoological Institute RAS, 2019, 323(1): 22–44 · https://doi.org/10.31610/trudyzin/2019.323.1.22

Full text

Abstract

Genera Ischyrocnemis and Terozoa (both initially monotypic) have been synonymized by H. Townes (1971) and preliminary placed in the subfamily Metopiinae. The results of molecular analyses (Quicke et al., 2009) did not clarify their systematic position. In this work Terozoa Förster, 1869 gen. resurr. (=Parablastus M. Constantineanu, 1973, syn. nov.) is restored from synonyms and placed into the subfamily Tryphoninae. Terozoa includes three species: type of the genus, Terozoa quadridens Perkins, 1962 (= Parablastus bituberculatus M. Constantineanu, 1973, syn. nov.) and two more species described earlier in Parablastus – T. iberica (Kasparyan, 1999) comb. n. and T. anatolica (Gürbüz et Kolarov, 2005) comb. n. The genus Terozoa and species T. quadridens are new records for Russia (North Caucasus, Essentuki). A key to species is provided. Four new Western Palearctic species are in Ischyrocnemis: I. femorator sp. nov. (with two subspecies: Caucasian I.f. femorator subsp. nov. and I. f. turanicus subsp. nov. from Central Asia), I. kotenkoi sp. nov. from the Transcaucasia, I. nigrans sp. nov. from steppes of Eastern Ukraine, Volga region and Kazakhstan, and I. verae sp. nov. from Kopet-Dag. A key to five species of the genus is given. Ischyrocnemis is treated provisionally in Metopiinae after H. Townes (1971), G. Broad and M. Shaw (2005). The characters common for Ischyrocnemis and Metopiinae are discussed: Ischyrocnemis approaches to Metopiinae in having the face and clypeus completely fused and clypeal fovea entirely lacking, that is unusual for most of Ichneumonidae but is typical for many Metopiinae (Acerataspis, Colpotrochia, Periope, Hypsicera, Triclistus, etc.); epipleura very wide (in metopiine present in Colpotrochia, Periope, Hypsicera, Seticornuta, Triclistus, etc.). Unusual for Metopiinae 1st metasomal segment of Ischyrocnemis (without glymmae with spiracles beyond the middle, and strongly narrowed in front of spiracles) found in Periope and in many ways is similar to some other Metopiinae (in genera Apolophus, Colpotrochia).

Key words

Transcaucasia, ichneumonids, new species, key, Russia, taxonomy, Middle Asia, Ukraine, Ischyrocnemis, Parablastus, Terozoa, Tryphoninae

Submitted June 15, 2018 · Accepted February 21, 2019 · Published March 25, 2019

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