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New records for Euhrychiopsis Lecontei (Coleoptera: Curculionidae) and their densities in Wisconsin lakes

Great Lakes Entomologist

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Abstract

The native aquatic weevil, Euhrychiopsis lecontei is currently being researched as a potential biological control for the exotic aquatic macrophyte Eurasian watermilfoil (Myriophyllum spicatum), yet little is known about its specific distribution in North America. In this study, E. lecontei was collected in 25 of 27 lakes surveyed for the weevil in Wisconsin, greatly increasing the known distribution of the species in this state. E. lecontei densities evaluated in 14 Wisconsin lakes ranged from <0.01 to 1.91 weevils per apical stem of milfoil. These new records indicate that E. lecontei is widespread throughout Wisconsin and is associated with natural declines of M. spicatum in some lakes. Additional sampling for E. lecontei and research on its ecology and life history are needed to understand the role of this organism in aquatic ecosystems.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
New records for Euhrychiopsis Lecontei (Coleoptera: Curculionidae) and their densities in Wisconsin lakes
Series title:
Great Lakes Entomologist
Volume
30
Issue:
4
Year Published:
1997
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Great Lakes Entomologist
First page:
169
Last page:
176
Number of Pages:
8