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Braconid parasitoids (Hymenoptera: Braconidae) of Nearctic Choristoneura species (Lepidoptera: Tortricidae), with a summary of other parasitoid families attacking Choristoneura

  • J. L. Fernández-Triana (a1) and J. T. Huber (a2)

Abstract

Illustrated identification keys are given for the superfamilies/families of insect parasitoids and the subfamilies, genera, and species of Braconidae reared from species of Choristoneura Lederer in the Nearctic Region. Goniozus floridanus (Ashmead) (Chrysidoidea: Bethylidae) represents the third superfamily of Hymenoptera, and Colpoclypeus florus (Walker) (Hymenoptera: Eulophidae) is added to the list of Chalcidoidea recorded from Choristoneura. Fifty species of Braconidae in 18 genera and 9 subfamilies are recorded parasitizing 11 Choristoneura species; almost half belong to the Microgastrinae. Eight braconids (16%) were found for the first time as parasitoids of Choristoneura. The first host record is given for Oncophanes californicus (Ashmead) (Hormiinae). Known insect parasitoids of Choristoneura spp. in the Nearctic Region include 230 species in 106 genera, about 75% of which attack only 1 or 2 Choristoneura species each. An additional 36 species are considered incorrectly associated with Choristoneura, an error rate of 14%. The Banchinae (Ichneumonidae, especially Glypta Gravenhorst), Pimplinae (Ichneumonidae), and Microgastrinae (Braconidae) made up the greatest proportion of parasitoids. No parasitoids have yet been recorded from five Nearctic Choristoneura species.

Nous présentons des clés d'identification illustrées pour les superfamilles/familles d'insectes parasitoïdes et pour les sous-familles, genres et espèces de Braconidae élevés sur Choristoneura Lederer (Lepidoptera: Tortricidae) dans la région néarctique. Goniozus floridanus (Ashmead) (Chrysidoidea: Bethylidae) représente une troisième superfamille d'hyménoptères et Colpoclypeus florus (Walker) (Hymenoptera: Eulophidae) s’ajoute à la liste des Chalcidoidea retrouvés sur Choristoneura. Cinquante espèces de Braconidae réparties en 18 genres et 9 sous-familles parasitent 11 espèces de Choristoneura, presque la moitié d'entre elles appartenant aux Microgastrinae. Huit braconidés (16%) sont cités pour la première fois comme parasitoïdes de Choristoneura. Nous mentionnons un premier hôte pour Oncophanes californicus (Ashmead) (Hormiinae). Les insectes parasitoïdes connus des Choristoneura néarctiques comprennent 230 espèces en 106 genres. Environ 75% des espèces de parasitoïdes attaquent chacune seulement 1 ou 2 espèces de Choristoneura. Trente-six espèces additionnelles sont considérées faussement associées à Choristoneura, un taux d'erreur de 14%, Les Branchinae (Ichneumonidae, particulièrement Glypta Gravenhorst), les Pimplinae (Ichneumonidae) et les Microgastrinae représentent la plus grande partie des parasitoïdes. Aucun parasitoïde n’a encore été trouvé chez cinq espèces néarctiques de Choristoneura.

[Traduit par la Rédaction]

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1 Corresponding author (e-mail: john.huber@agr.gc.ca).

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Braconid parasitoids (Hymenoptera: Braconidae) of Nearctic Choristoneura species (Lepidoptera: Tortricidae), with a summary of other parasitoid families attacking Choristoneura

  • J. L. Fernández-Triana (a1) and J. T. Huber (a2)

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