Species of the genus Lathrolestes Förster (Hymenoptera: Ichneumonidae) from western Palaearctic are reviewed. Two new species of Lathrolestes are described, L. nornae sp. n. from Norway and Russia and L. laevipleuris sp. nov. from Finland. An illustrated key to European species is provided. Four additional species are recorded from Norway for the first time.
Lathrolestes
ivoriensis
sp. n. is described from Côte d’Ivoire. This is the second record of the genus from the Afrotropical region and the first record of the genus and the subfamily for the country. Illustrated re-description of Lathrolestes
ruwenzoricus (Benoit, 1955) is also provided.
Here we describe and illustrate a new parasitoid wasp species, Lathrolestes gauldi
sp. n. from the lowland rainforest of eastern Ecuador and provide a key to the Neotropical species of the genus. This is the first record of the subfamily Ctenopelmatinae from Ecuador.
The present paper contains new distributional records for 61 species of ichneumon wasps (Hymenoptera, Ichneumonidae) previously unknown for Norway, six of them are reported from Scandinavia for the first time.
All Holarctic members of the genus Lathrolestes Förster (Hymenoptera: Ichneumonidae) were reviewed. Five species are described as new: L. syringe Reshchikov sp. nov., L. barroni Reshchikov sp. nov., L. fissus Reshchikov sp. nov., L. thomsoni Reshchikov sp. nov., and L. soperi Reshchikov sp. nov. The last two species were reared from Profenusa thomsoni (Konow, 1886), an invasive European birch leafmining sawfly found in North America. Lathrolestes nasoni Davis, 1897 is synonymized with L. caudatus (Thomson, 1883); L. scutellatus (Ashmead, 1890) stat. rev. is reestablished as a valid species.
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