A 
L 
STAT EOF PL EINWOTS 
WILtrAM G. STRATTON, Governor 
DEPARTMENT OF REGISTRATION AND EDUCATION 
Vera M. Binks, Director 
BOARD OF NATURAL RESOURCES AND CONSERVATION 
VerRA M. Binks, Chairman 
. E. Emerson, Ph.D., Biology 
. H. Tirrany, Ph.D., Forestry 
WALTER H. NEwuouse, Ph.D., Geology 
RoGer ApaAms, Ph.D., D.Sce., Chemisiry 
Rosert H. ANDERSON, B.S.C.E., Engineering 
Davip D. Henry, Ph.D., LL.D., HH.D., Litt.D., L.H.D., President of the University of Illinois 
DELYTE W. Morris, Ph.D., President of Southern Illinois University 
NATURAL HISTORY SURVEY DIVISION 
Urbana, Illinois 
SCIENTIFIC AND TECHNICAL STAFF 
HARLOW B. MILLS, Ph.D., Chief 
Bessie B. East, M.S., Assistant to the Chief 
Section of Economic Entomology 
S 
S 
GeorGE C. Decker, Ph.D., Entomologist and 
Head 
J. H. BicGer, M.S., Entomologist 
L. L. EnGuisu, Ph.D., Entomologist 
S. C. CHANDLER, B.S., Associate Entomologist 
Wiis N. Bruce, Ph.D., Associate Entomologist 
NorMaNn C. GANNON, Ph.D., Associate Ento- 
mologist 
Joun M. Wricut, Ph.D., Associate Entomologist 
PauLt SurANY, Ph.D., Associate Entomologist 
W. H. LuckMann, M.S., Associate Entomologist 
Joun D. Briccs, Ph.D., Associate Entomologist 
RonALp H. MEYER, B.S., Assistant Entomologist 
Joun W. Matteson, B.A., Field Assistant 
ROBERT SNETSINGER, M.S., Field Assistant 
SuE E. WartKINS, Technical Assistant 
H. B. Petry, Ph.D., Extension Specialist in En- 
tomology* 
STEVENSON Moore, III, Ph.D., Extension Spe- 
cialist in Entomology* 
OHN ARTHUR LowE, B.S., Research Assistant* 
OHAN Rao, M.S., Research Assistant* 
CLARENCE E. Wuirte, B.S., Research Assistant* 
LouIsE ZINGRONE, B.S., Research Assistant* 
ection of Faunistic Surveys and Insect 
Identification 
H. H. Ross, Ph.D., Systematic Entomologist and 
Head 
Mitton W. SANDERSON, Ph.D., Taxonomist 
Lewis J. STANNARD, JR., Ph.D., Associate Tax- 
onomist 
Puitie W. SmitH, Ph.D., Associate Taxonomist 
Leonora K. Gioyp, M.S., Assistant Taxonomist 
R. B. SELANDER, Ph.D., Assistant Taxonomist 
Tuomas E. Moore, M.S., Technical Assistant 
BarBARA GutTowsky, M.A., Technical Assistant 
ection of Aquatic Biology 
GrEorGE W. BENNETT, Ph.D., Aquatic Biologist 
and Head 
WitiraAM C. STARRETT, Ph.D., Aquatic Biologist 
R. W. Larimore, Ph.D., Associate Aquatic Bi- 
ologist 
DonaLp F. HANSEN, Ph.D., Assistant Aquatic 
Biologist 
Ropert D. Crompton, Field Assistant 
WituiaM F. CuiLpers, B.S., Technical Assistant* 
Section of Applied Botany and Plant 
Pathology 
df ae CarTER, Ph.D., Plant Pathologist and 
ea 
J. L. ForsBerG, Ph.D., Plant Pathologist 
G. H. Borewe, M.S., Associate Botanist 
R. J. CAMpPANA, Ph.D., Assistant Plant Pathol- 
ogist 
I. R. SCHNEIDER, Ph.D., Assistant Plant Pa- 
thologist 
E. B. Himetick, M.S., Assistant Plant Pathologist 
A. W. ENGELHARD, Ph.D., Assistant Plant Pa- 
thologist 
Rosert A. Evers, Ph.D., Assistant Botanist 
RoveniA F. Fitz-Geratp, B.A., Technical 
Assistant 
James D. Bivpruck, M.S., Research Assistant* 
Section of Game Research and Management 
T. G. Scott, Ph.D., Game Specialist and Head 
RacpH E. YEATTER, Ph.D., Game Specialist 
F. C. BELLROSE, B.S., Game Specialist 
H. C. Hanson, M.S., Assistant Game Specialist 
J. S. JorDAN, Ph.D., Assistant Game Technician 
Ross J. MiLter, M.S., Field Ecologist 
FRANCES D. ROBBINS, B.A., Technical Assistant 
VirGINIA A. WHIPPLE, Technical Assistant 
JouN M. ScHILLING, Field Assistant 
WILLIAM B. ROBERTSON, JR., Ph.D., Research 
Assistant* 
James OpsAHL, M.S., Field Assistant* 
Jack A. Exuis, M.S., Field Assistant* 
Forrest D. Loomis, B.S., Field Assistant* 
Pau A. Vous, Jr., B.S., Project Leader* 
Section of Publications and Public Relations 
James S. Ayars, B.S., Technical Editor and Head 
BLANCHE P. YounG, B.A., Assistant Technical 
Editor 
WitiiaM E. CLaArk, Assistant Technical Photog- 
rapher 
MiLan Dopsrovic, B.A., Technical Assistant 
Technical Library 
RutH R. Warrick, B.S., B.S.L.S., Technical 
Librarian 
NELL Mites, M.A., B.S.L.S., Assistant Technical 
Librarian 
ConsuLTANTs: HErpETOLOGY, Hopart M. Situ, Ph.D., Associate Professor of Zoology, University of Illinois; 
PARASITOLOGY, NORMAN D. LEVINE, Ph.D., Professor of Veterinary Parasitology and of Veterinary Re- 
search, University of Illinois. 
_ *Employed on co-operative projects with one of several agencies: Illinois Agricultural Extension Service, 
Illinois Department of Conservation, United States Army Surgeon General's Office, United States Depart- 
ment of Agriculture, United States Fish and Wildlife Service, United States Public Health Service, and others. 
This paper is a contribution from the Section of Applied Botany and Plant Pathology. 
(17566—3M—6-55) cess 2 
