Sheldon, S.P. and L.M. O'Bryan, 1996. The Life History of the Weevil Euhrychiopsis lecontei, a Potential Biological Control Agent of Eurasian Watermilfoil, Middlebury College.

Reprinted with Permission from Entomological News (1996) 107: 16-22

The Life History of the Weevil Euhrychiopsis lecontei, a Potential Biological Control Agent of Eurasian Watermilfoil

Abstract
We followed weevil life history in the lab and phenology in the field. In lab cultures, weevils progressed from eggs to adults in approximately 30 days. Females laid an average of 1.9 eggs per day; hatching success was 87%. In a Vermont lake, weevil adults and eggs were first found in late May. Thereafter there was a cyclic series of peaks in weevil stage abundance; there appeared to be three generations of weevils each summer in Vermont. This weevil is being evaluated as a possible agent of biological control.

Contact: Sallie Sheldon, Middlebury College, Department of Biology, Middlebury, VT 05753-6151
Key Words: Biological_control, Eurasian_watermilfoil, Aquatic_plant_management
Product Type: Research, Control
User Type: Resource Management