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A review of known parasitoids of hemlock looper (Lepidoptera: Geometridae) in Canada and first records of egg and larval parasitoids in Labrador forests

Published online by Cambridge University Press:  13 June 2018

Rachid Sabbahi
Affiliation:
Natural Resources Canada, Atlantic Forestry Centre, 26 University Drive, P.O. Box 960, Corner Brook, Newfoundland and Labrador, A2H 6J3, Canada; and Ecozone LLC, 23 Okba Ibno Nafii Avenue, Hay Mohammedi, Casablanca, Morocco
Lucie Royer*
Affiliation:
Natural Resources Canada, Atlantic Forestry Centre, 26 University Drive, P.O. Box 960, Corner Brook, Newfoundland and Labrador, A2H 6J3, Canada; and Natural Resources Canada, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 10380, Québec, Québec, G1V 4C7, Canada
James E. O’Hara
Affiliation:
Canadian National Collection of Insects, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, Ontario, K1A 0C6, Canada
Andrew M.R. Bennett
Affiliation:
Canadian National Collection of Insects, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, Ontario, K1A 0C6, Canada
*
1Corresponding author (e-mail: lucie.royer@canada.ca).

Abstract

A rearing study of egg and larval parasitoids of hemlock looper (Lambdina fiscellaria (Guenée); Lepidoptera: Geometridae) was undertaken during an outbreak of this pest in Labrador, Newfoundland and Labrador, Canada. Six parasitoid species were found: Telenomus coloradensis Crawford and T. droozi Muesebeck (Hymenoptera: Platygastridae), Winthemia occidentis Reinhard and Blondelia eufitchiae (Townsend) (Diptera: Tachinidae), as well as one species of Phobocampe Förster and Mesochorus vittator (Zetterstedt) (Hymenoptera: Ichneumonidae). None of them was a new Canadian record. To facilitate understanding of the regional parasitoid assemblage in Labrador, we compiled all published records in Canada and collated all specimen records from the Canadian National Collection of Insects, Arachnids, and Nematodes (Ottawa, Ontario, Canada). This comprehensive list will aid researchers interested in potential biological control candidates for hemlock looper.

Résumé

Une étude des parasitoïdes des œufs et des larves de l’arpenteuse de la pruche (Lambdina fiscellaria (Guenée); Lepidoptera: Geometridae) a été entreprise pendant une infestation de ce ravageur au Labrador, Terre-Neuve-et-Labrador, Canada. Six espèces de parasitoïde ont été trouvées: Telenomus coloradensis Crawford et T. droozi Muesebeck (Hymenoptera: Platygastridae), Winthemia occidentis Reinhard et Blondelia eufitchiae (Townsend) (Diptera: Tachinidae), ainsi qu’une espèce de Phobocampe Förster et Mesochorus vittator (Zetterstedt) (Hymenoptera: Ichneumonidae). Aucune d’entre elles n’était nouvelle au Canada. Afin de mieux comprendre l’assemblage régional de parasitoïdes du Labrador, nous avons compilé toutes les espèces rapportées dans les publications au Canada, et examiné tous les spécimens conservés de la Collection nationale canadienne d’insectes, d’arachnides et de nématodes (Ottawa, Ontario, Canada). Cette liste complète aidera les chercheurs intéressés par les candidats potentiels pour le contrôle biologique de l’arpenteuse de la pruche.

Type
Behaviour & Ecology
Copyright
© Her Majesty the Queen in Right of Canada 2018 

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Footnotes

Subject Editor: Dylan Parry

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