A list of Michigan Corixidae (Hemiptera) with four new state records from the Great Lakes of Michigan

Corisella tarsalis, Sigara lineata, Trichocorixa borealis, and Trichocorixa kanza were recently identified from Michigan and constitute new state reco rds. These four species were collected from two of the Great Lakes or their connecting rivers and increase the number of corixids for Michigan to 47 s pecies. We newly report the genus Corisella for Michigan. Although most abu ndant in the western United States and Canada, scattered Corisella records in the Midwest (Wisconsin, Ohio and Ontario, Canada) indicated there was a good probability of its occurrence in Michigan. Finally, we provide an upda ted list of Michigan Corixidae.