Excerpt: Williamsonia fletcheri Williamson was first taken in the United States in the upper peninsula of Michigan near Manistique, Schoolcraft County (Gloyd, 1932). On June 4, 1966, I collected two males of this rare species at Island Lake, a small lake heavily overgrown with jack pine and poplar in southeastern Grand Traverse County. The specimens were identified by Mrs. Leonora Gloyd of the University of Michigan. This is the first report of this species from the lower peninsula of Michigan, and the second for the United States.
Foley, David F.
"Another Record of Williamsonia Fletcheri in Michigan (Odonata: Corduliidae),"
The Great Lakes Entomologist, vol 1
Available at: https://scholar.valpo.edu/tgle/vol1/iss3/3