J. ent. Soc. Ont. Volume 144, 2013
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Volume 144, 2013 I. FROM THE EDITOR [PDF] III. NOTES E. ST. LOUIS -- New Ontario records for Nanophyes M. marmoratus (Goeze, 1777) (Coleoptera: Brentidae), introduced into North America for classical biological control of purple loosestrife ... 119-123 [PDF] New Ontario records for Nanophyes M. marmoratus (Goeze, 1777) (Coleoptera: Brentidae), introduced into North America for classical biological control of purple loo sestrife. E. ST. LOUIS Faculty of Science, University of Ottawa, Ottawa, ON, Canada K1N 6N5 email: estlo103@uottawa.ca J. ent. Soc. Ont. Volume 144, 2013 Abstract In 1992, Nanophyes marmoratus marmoratus (Goeze) (Coleoptera: Brentidae), the Purple Loosestrife Flower Weevil, native to Eurasia (Thompson et al. 1987), was identified as a candidate for biological control of Purple Loosestrife, Lythrum salicaria (L.) (Lythraceae), an alien weed invasive in North America. Although N. m. marmoratus was assessed as having a lower potential impact than the other biological control candidates, Neogalerucella calmariensis L., N. pusilla (Duftschmid) (Chrysomelidae) and Hylobius transversovittatus (Goeze) (Curculionidae), it was still released due to its high likelihood of establishment (Blossey and Schroeder 1995). From 1994–2005, N. m. marmoratus was released in several US states (Skinner 1996; Blossey 2001). In Canada, 720 adults were released in 1997 in southern Manitoba in three marshy sites (Lindgren et al. 2002). In Ontario there is no record of this species ever having been released (D. Mackenzie, personal communication). The present study is the first to monitor the spread of N. m. marmoratus in Canada since its release in North America, thus addressing Corrigan et al.’s (2013) recommendation to assess its establishment in Canada. |
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