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Erroneous records of Aleochara bipustulata from North America: an assessment of the evidence

Hemachandra, K.S. ; Holliday, N.J. ; Klimaszewski, J. ; Mason, P.G. ; Kuhlmann, U.

In: The Canadian Entomologist, 2005, vol. 137, no. 2, p. 182-187

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    Titre
    • Erroneous records of Aleochara bipustulata from North America: an assessment of the evidence
    Auteur
    • Hemachandra, K.S.. Department of Entomology, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
    • Holliday, N.J.. Department of Entomology, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
    • Klimaszewski, J.. Canadian Forest Service, Natural Resources Canada, Laurentian Forestry Centre, 1055 rue de P.E.P.S., Saint-Foy, Quebec, Canada G1V 4C7
    • Mason, P.G.. Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, 960 Carling Avenue, Ottawa, Ontario, Canada K1A 0C6
    • Kuhlmann, U.. CABI Bioscience Switzerland Centre, 1 Rue de Grillons, 2800 Delémont, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • The Canadian Entomologist, 2005, vol. 137, no. 2, p. 182-187. Cambridge University Press
    Autre version électronique
    Classification
    • Biologie, Sciences de la vie
    Identifiant OAI-PMH
    • oai:doc.rero.ch:300877
    Summary
    Aleochara bipustulata (L., 1761) (Coleoptera: Staphylinidae) is a Palearctic species and a natural enemy of the cabbage root maggot, Delia radicum (L., 1758) (Diptera: Anthomyiidae). It has been identified as a candidate for introduction to Canada for classical biological control of D. radicum. Recent taxonomic studies assert that A. bipustulata is absent from the Nearctic; however, there are numerous publications reporting the presence of the species in North America. We examined voucher material relating to these publications and additional museum specimens labeled as A. bipustulata. In addition, we reared Aleochara spp. from D. radicum puparia collected in the Canadian prairie provinces. Specimens that, based on external anatomy, could be A. bipustulata were definitively identified using characters of the genitalia. All of the 141 museum specimens labeled A. bipustulata were found to be Aleochara verna Say, 1836. A total of 811 individuals of Aleochara spp. were reared from D. radicum puparia; of these, 690 were Aleochara bilineata Gyllenhal, 1810, 121 were A. verna, and none were A. bipustulata. We have found no evidence that A. bipustulata occurs in North America