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Selby, G. and D.C. Glenn-Lewin. 1988. A systematic inventory, population monitoring program, and ecological study of rare Lepidoptera at the Prairie Coteau Scientific and Natural Area (SNA), Pipestone County, Minnesota. Final report submitted to the Minnesota Department of Natural Resources. 7+ pp.
Introduction:
A study of rare butterflies was conducted at Prairie Coteau Scientific and Natural Area, Pipestone County, Minnesota. The work for the summer of 1988 consisted of (1) general surveys for all butterfly species present at Prairie Coteau during each of the major flight periods, (2) distribution mapping for selected rare butterflies, and (3) population monitoring for Hesperia dacotae and other rare butterflies which were flying during its fight period.