A Comprehensive Annotated List of the Butterflies
(Lepidoptera: Rhopalocera)
Occurring in the Little Missouri National Grassland
Billings, Golden Valley, McKenzie & Slope Counties,
North Dakota
Ronald Alan Royer, Ph.D.
Professor in the Division of Science
Minot State University
This is the second edition of a comprehensive butterfly list produced by the Northern Prairie Science Center of the National Biological Service, U. S. Department of the Interior, under cooperative agreement with the author and Minot State University. Field work for the project was completed in the summers of 1995 and 1996. A primary objective of the project was production of a comprehensive local butterfly list that could serve as a basis for future monitoring of populations and as an aid in making management decisions within Little Missouri National Grassland.