Laspeyresia lacustrina is described from four specimens, all female, captured in flight at two locations in Lower Michigan. On the exterior, the moth most resembles L. populana Busck and several other eastern species; its genitalia most resemble the western L. lautiuscula Heinrich. With wing length 8.4 to 9.4 mm, L. lacustrina is among the largest North American members of the genus.
Miller, William E.
"A New Species of Laspeyresia from Michigan (Lepidoptera: Olethreutidae),"
The Great Lakes Entomologist, vol 9
Available at: https://scholar.valpo.edu/tgle/vol9/iss4/1