Leptoglossus occidentalis is reported for the first time from Illinois and Michigan, and confirmed for Indiana. A key to the species of Leptoglossus occurring in America north of Mexico is presented.
McPherson, J. E.; Packauskas, R. J.; Taylor, S. J.; and O'Brien, M. F.
"Eastern Range Extension of Leptoglossus Occidentalis With a Key to Leptoglossus Species of America North of Mexico (Heteroptera: Coreidae),"
The Great Lakes Entomologist: Vol. 23
, Article 5.
Available at: https://scholar.valpo.edu/tgle/vol23/iss2/5