The family Tenebrionidae, the darkling beetles, containing more than 14,000 species, is found primarily in the tropics and arid regions. As would therefore be expected, Michigan's cool, moist environment is not attractive to very many tenebrionids. This list contains 50 identified species and six previously recorded species that were not confirmed by me.
"A List of the Tenebrionidae of Michigan (Coleoptera),"
The Great Lakes Entomologist, vol 6
Available at: https://scholar.valpo.edu/tgle/vol6/iss3/2