aces reference FieM Guide to j ■ ,X V.v k -i.A.,y!.'..,}{ V.,/ .5oo]:i j j-ou^ernaii }<>:. Jajiii&ii (}. Stctrnburg ; ■: - txO» jwy{J I •.'• 'M’S \ »• 'V'. .'-.J- ^*v, ^ f "■ V ■■* -yv '. V 1 ‘s I T'sNif^!L'biVV4i*‘*‘\ S r '>ar V-’ ^ lllinoii^ Natural History Survey UNIVERSITY OF ILLINOIS LIBRARY AT URBANA-CHAMPAIGN NAT. HIST, SURV. aces library aces reference Field Guide to Butterflies of Illinois John K. Bouseman James G. Sternburg ACES reference Field Guide to Butterflies of Illinois John K. Bouseman James G. Sternburg Illinois Natural History Survey • Champaign January 2001 Manual 9 Illinois Natural History Survey, David L. Thomas, Chief A Division of the Illinois Department of Natural Resources, Brent Manning, Director Illinois Natural History Survey Natural Resources Building 607 East Peabody Drive Champaign, Illinois 61820 Printed by the authority of the State of Illinois Photo credits: all photographs are by James G. Stemburg unless otherwise indicated in the figure captions. Copyright of each photo resides with the photographer. Editors: Thomas E. Rice and Charles Warwick Dust jacket: Thomas E. Rice ISBN: 1-882932-05-6 Library of Congress Control Number: 00-136379 Citation: Bouseman, J.K., and J.G. Stemburg. 2001. Field guide to butterflies of Illinois. Illinois Natural History Survey Manual 9. xii + 264 pp. Printed with soy ink on recycled and recyclable paper. ACES reference In memory of Ellis G. MacLeod {1928-1997)