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Microctonus aethiops (Nees) auctt. and Perilitus rutilus (Nees) (Hymenoptera: Braconidae), European Parasites of Sitona Weevils (Coleoptera: Curculionidae)1

  • Conrad Loan (a1) and F. G. Holdaway (a2)
Extract

Microctonus aethiops (Nees) auctt. (Fig. 1) and Perilitus rutilus (Nees) are parasites of adult Sitona weevils in Europe. They were released in Canada as control agents of the sweetclover weevil, Sitona cylindricollis Fahr. (Fig. 2). The immature stages and biology of the species were studied as a prerequisite to attempts at biological control. A similar investigation of the braconid Pygostolus falcatus (Nees) was completed (Loan and Holdaway, 1961). Jackson (1928) described some aspects of the biology of P. rutilus, and additional data are given in the present paper.

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References
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Cox, C. E. 1954. Handbook on Statistical Methods. Can. Dept. Agric. Processed Publ. No. 3.
Jackson, D. J. 1922. Bionomics of weevils of the genus Sitona injurious to leguminous crops in Britain. Pt. II. Sitona hispidula F., S. sulcifrons Thun. and S. crinita Herbst. Ann. appl. Biol. 9: 93115.
Jackson, D. J. 1924. Insect parasites of the pea weevil. Nature 113: 353354.
Jackson, D. J. 1928. The biology of Dinocampus (Perilitus) rutilus Nees, a braconid parasite of Sitona lineata L. Pt. I. Proc. zool. Soc. hond., 597630.
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Marshall, T. A. 1887. Monograph of British Braconidae. Pt. II. Trans. R. ent. Soc. Land., 7374.
Meyer, N. F. 1934. Schlupfwespen, die in Russland in den letzten jahren aus Schadlingen gezogen sind. Z. angew. Ent. 20: 611618.
Newton, H. C. F. 1931. Notes on some parasites reared from flea beetles of the genus Phyllotreta (Chrysomelidae). Ent. mon. Mag. 67: 82.
Short, J. R. T. 1952. The morphology of the head of larval Hymenoptera with special reference to the head of Ichneumonidae, including a classification of the final instar larvae of Braconidae. Trans. R. ent. Soc. Lond. 130: 2784.
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The Canadian Entomologist
  • ISSN: 0008-347X
  • EISSN: 1918-3240
  • URL: /core/journals/canadian-entomologist
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