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On the misidentification of chalcid (Hymenoptera: Chalcidoidea) parasitoids of the cabbage seedpod weevil (Coleoptera: Curculionidae) in North America

Gibson, Gary A.P. ; Baur, Hannes ; Ulmer, Bryan ; Dosdall, Lloyd ; Muller, Franck

In: The Canadian Entomologist, 2005, vol. 137, no. 4, p. 381-403

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    Titre
    • On the misidentification of chalcid (Hymenoptera: Chalcidoidea) parasitoids of the cabbage seedpod weevil (Coleoptera: Curculionidae) in North America
    Auteur
    • Gibson, Gary A.P.. Agriculture and Agri-Food Canada, Biodiversity and Integrated Pest Management, K.W. Neatby Building, 960 Carling Avenue, Ottawa, Ontario, Canada K1A 0C6
    • Baur, Hannes. Department of Invertebrates, Naturhistorisches Museum, Bernstrasse 15, CH-3005 Bern, Switzerland
    • Ulmer, Bryan. Department of Agricultural, Food and Nutritional Science, 4-10 Agriculture/Forestry Centre, University of Alberta, Edmonton, Alberta, Canada T6G 2P5
    • Dosdall, Lloyd. Department of Agricultural, Food and Nutritional Science, 4-10 Agriculture/Forestry Centre, University of Alberta, Edmonton, Alberta, Canada T6G 2P5
    • Muller, Franck. CABI Bioscience Centre, Rue des Grillons, Delémont, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • The Canadian Entomologist, 2005, vol. 137, no. 4, p. 381-403. Cambridge University Press
    Autre version électronique
    Classification
    • Biologie, Sciences de la vie
    Identifiant OAI-PMH
    • oai:doc.rero.ch:300723
    Summary
    Previous identifications in North America of Trichomalus perfectus (Walker, 1835) and Mesopolobus morys (Walker, 1848) (Chalcidoidea: Pteromalidae), the principal chalcid parasitoids of the cabbage seedpod weevil (Ceutorhynchus obstrictus Marsham, 1802) in Europe, are shown to be misidentifications of Trichomalus lucidus (Walker, 1835) and Mesopolobus (Xenocrepis) moryoides sp. nov., respectively. Necremnus duplicatus Gahan, 1941 (Chalcidoidea: Eulophidae) is synonymized formally under Necremnus tidius (Walker, 1839) syn. nov., confirming a previous, tentative synonymy. Both sexes of N. tidius, M. moryoides, and T. lucidus are illustrated and compared with those of similar species using macrophotography and scanning electron microphotography. Hypotheses are offered to explain why the principal chalcid parasitoids of the cabbage seedpod weevil differ between North America and Europe and how the three treated species came to be in North America