The Mitchell’s satyr, Neonympha mitchellii French 1889 (Lepidoptera: Nymphalidae) was described as a new species based on a series of six males and four females collected by J. N. Mitchell from “Wakelee bog” in Cass County, Michigan (French 1889). French did not designate a holotype from this series.
Hamm, Christopher A.
"Designation of a Neotype for Mitchell’s Satyr, Neonympha Mitchellii (Lepidoptera: Nymphalidae),"
The Great Lakes Entomologist, vol 40
Available at: https://scholar.valpo.edu/tgle/vol40/iss2/11