A survey of the populations of Jap.anese beetles, Popillia japonica Newman, is made each year in southern Michigan to determine the abundance and distribution of this pest insect. Since little information is available about the insects that are attracted by Japanese beetle attractants in Michigan or anywhere in the United States, a study was made of the insects captured in Japanese beetle traps.
Wellso, Stanley G. and Fischer, Roland L.
"Insects Taken at Japanese Beetle Traps Baited with Anethole-Eugenol in Southern Michigan in 1968,"
The Great Lakes Entomologist, vol 4
Available at: https://scholar.valpo.edu/tgle/vol4/iss4/2