STATE OF ILLINOIS 
Wicuram G. Srrarron, Covernor 
DEPARTMENT OF REGISTRATION AND EDUCATION 
Vera M. Binks, Director 
BOARD OF NATURAL RESOURCES AND CONSERVATION 
Vera M. Binxs, Chairman; A, E. Emerson, Ph.D., 
Ph.D., Geology; Rocer Avams, 
Everitt, E.E., Ph.D., 
dent of Southern Illinois Unit versity 
Ph.D., D.Sc., Chemistry; 
Representing the President of the University of Illinois; 
Biology; L. H. Tirrany, Ph.D., Forestry; Watter H. Newnouse, 
ANDERSON, Pee Engineering; W. L. 
DeLyTeE . Moras, Ph.D., Presi- 
Rosrrr H. 
NATURAL HISTORY SURVEY DIVISION, Urbana, Illinois 
SCIENTIFIC AND TECHNICAL STAFF 
Hartow B. Mixts, Ph.D., Chief 
Bessie B. East, M.S., Assistant to the Chief 
Section of Economic Entomology 
Georce C. Decker, Ph.D., Entomologist and Head 
J. H. Biccer, M.S.., Entomologist 
L. L. Encuisu, Ph.D., Entomologist 
Wiruts N. Bruce, Ph. D., Associate Entomologist 
Norman Gannon, Ph.D., Associate Entomologist 
W. H. Lucxmann, Ph.D., Associate Entomologist 
Joun D. Brices, Ph.D., Associate Entomologist 
Ronatp H. Meyer, M.S., Assistant Entomologist 
Joun D. Pascuxe, Ph.D., Assistant Entomologist 
Rosert Snersincer, M.S., Field Assistant 
Joun P. Kramer, MS., Laboratory Assistant 
Eucene M. Bravi, M.S., Research Assistant 
Ricnarp B. Dysart, BS., Technical Assistant 
Avsert Sacaxo, B.S., Technical Assistant 
Eart Srapecsacuer, B.S., Technical Assistant 
Sue E. Warxins, Technical Assistant 
H. B. Perry, Ph.D., Extension Specialist in Entomology* 
Stevenson Moore, III, Ph.D., Extension Specialist in 
Entomology* 
H. B. Cunnincuam, ML.S., Research Associate* 
Joun W. Marreson, M.S., Research Associate* 
Crarence E. Waite, B.S., Research Assistant* 
Joux Arruur Lowe, B.S., Research Assistant* 
Cuarves Le Sar, B.S., Research Assistant* 
Louise Zincrone, B.S., Research Assistant* 
Mary E. Mann, RN.,. Research Assistant* 
Section of Faunistic Surveys and Insect Identification 
H. H. Ross, Ph.D., Systematic Entomologist and Head 
Mitton W. SANDERSON, Ph.D., Taxonomist 
Lewis J. Srannarp, Jr., Ph. D., Associate Taxonomist 
Paine W. Smiru, Ph.D., Associate Taxonomist 
Leonora K. Giorno, M.S., Assistant Taxonomist 
R. B. Seranver, Ph.D., Assistant Taxonomist 
Epwarp L. Mockrorp, "M.S., Technical Assistant 
Tuetma H, Overstreet, Technical Assistant 
Section of Aquatic Biology 
Georce W. Bennett, Ph.D., Aquatic Biologist and Head 
Wiuttiam C. Srarretr, Ph.D., Aquatic Biologist 
R. W. Larimore, Ph.D., Associate Aquatic Biologist 
Davi H. Buck, Ph.D., Associate Aquatic Biologist 
Ropert C. Hirtipran, Ph.D., Associate Biochemist 
Donatp F. Hansen, Ph.D., Assistant Aquatic Biologist 
Wititiam F. Cuicpers, M.S., Assistant Aquatic Biologist 
Joun C. Craucey, B.S., Field Assistant 
Ricuarp E. Bass, Field Assistant 
Rosert D. Crompton, Field Assistant 
CONSULTANTS: Herperotocy, Hosarr M. Smiru, 
PARASITOLOGY, 
Ph.D., 
Norman D. Levine, Ph.D., Professor of Veterinary Parasitology and 
Section of Aquatic Biology—continued 
M. A. Wuiracre, M.A., Assistant Aquatic Biologist* 
Arnotp W. Fritz, B.S., Field Assistant* 
Davi J. McGinty, Field Assistant* 
Pau. Frey, B.S., Laboratory Assistant* 
Section of Applied Botany and Plant Pathology 
J. Cepric Carter, Ph.D., Plant Pathologist and Head 
J. L. Forsserc, Ph.D., Plant Pathologist 
G. H. Boewe, M.S., Associate Botanist 
Rospert A. Evers, Ph.D., Associate Botanist 
R. J. Campana, Ph.D., Associate Plant Pathologist 
Rosert Dan Neety, Ph.D., Assistant Plant Pathologist 
E. B. Himenicx, M.S., Assistant Plant Pathologist 
Rovenia F. Firz-Gerarp, B.A., Technica! Assistant 
Section of Wildlife Research 
Tuomas G. Scorr, Ph.D., Game Specialist and Head 
Ratpw E. Yeatrrer, Ph.D., Game Specialist 
Cart O. Morr, Ph.D., Game Specialist 
F. C. Bexrrose, B.S., Game Specialist 
Ore R. Graper, Ph.D., Associate Wildlife Specialist 
. R. Hanson, Ph.D., Associate Game Specialist 
Hn C. Hanson, MLS., "Associate Game Specialist 
Wi.iaM R. Hawkins, B.A., Technical Assistant 
Frances D. Rossins, B.A., Technical Assistant 
Vireinia A. Lancvon, Technical Assistant 
Howarp Crum, Jr., Field Assistant 
Rexrorp D. Lorp, D.Sc., Project Leader* 
Freperick GkKeEeLey, Ph.D., Project Leader* 
Gren C. Sanverson, M.A., Project Leader* 
Pauzi A. Vous, Jr., B.S., Project Leader* 
Jacx A. Exuis, M.S., Project Leader* 
Ronatp F. Lasisxy, M.S., Project Leader* 
Tuomas R. B. Barr, M.V.Sc., M.R.C.V.S., 
Assistant*® 
Bossie for Verts, M.S., Field Mammalogist* 
Research 
Section of Publications and Public Relations 
James S. Ayars, B.S., Technical Editor and Head 
Buancne P. Youne, B.A., Assistant Technical Editor 
Diana R. Braverman, B.A., Assistant Technical Editor 
Wiiusam E. Crarx, Assistant Technical Photographer 
Wixtitiam D. Woop, B.S., Technical Assistant 
Technical Library 
Rut R. Warrick, B.S., B.S.L.S., Technical Librarian 
Nett Mites, M.S., B.S.L.S., Assistant Technical 
Librarian 
Associate Professor of Zoology, University of Illinois; 
of Veterinary Research, University 
of Illinois; Witptire Researcu, Witiarv D. Kurustra, Ph.D., Associate P. Zool d Direct 
Co-operative Wildlife Research, Southern Illinois University. Ue, Praesent ee eee 
*Employed on co-operative projects with one of several agencies: University of Illinois, 'linoic Agricultural 
Extension Service, Illinois Department of Conservation, United States Army Surgeon General’s Office, United States 
Department of Agriculture, United States Fish and Wildlife Service, United States Public Health Service, and others, 
This paper is a contribution from the Section of Publications and Public Relations. 
(73600—800—2-58) 
