NEW RECORDS AND DISTRIBUTION OF AQUATIC INSECT HERBIVORES OF WATERMILFOILS (HALORAGACEAE, MYRIOPHYLLUM SPP) IN MINNESOTA

A survey of 19 lakes in Minnesota and six lakes in Wisconsin, for the presence of watermilfoil herbivores, indicated the presence of three t axa: a weevil Euhrychiopsis lecontei (Dietz) (Curculionidae), a lepido pteran, Acentria ephemerella (Denis and Schiffermuller) (Pyralidae) an d a midge Cricotopus myriophylli Oliver (Chironomidae). We located the weevil, Euhrychiopsis lecontei, at 13 sites in 10 lakes; 11 of these sites were in Minnesota. The midge, Cricotopus myriophylli, was found at eight sites in six lakes, including two sites in Wisconsin, and the moth, Acentria ephemerella, was found at five sites, including one si te in Wisconsin. The weevil and caterpillar had been recorded previous ly in Wisconsin, but not in Minnesota. The midge has not been reported previously outside of eastern Ontario and British Columbia.