Neonympha mitchellii is an endangered species of nymphalid butterfly of the eastern United States. There are two known subspecies:
Neonympha mitchellii is a resident of Michigan, Indiana and Ohio (Scott 1986). Habitats are sphagnum bogs. Host plants are probably sedges (Cyperaceae). Eggs are laid on the stems singly. Individuals overwinter as fourth stage larvae. There is one flight with the approximate flight time late June-July 15 (Scott 1986).