The larva of the gypsy moth is the stage of the moth's life cycle that does the dam- 

 age. It moves from tree to tree, often defoliating entire forest stands. A single 

 2-1/2- inch caterpillar eats one square foot of leaf surface every 24 hours. It feeds 

 on the leaves of many forest, shade, and fruit trees. There has been an increase in 

 infestations in both Michigan and Ohio this year, but none have been found in Indiana. 



If you observe what may be adult gypsy moths or the immature larvae, send specimens to 

 Extension Entomologist, 169 Natural Resources Building or to L.B. Matzenbacher, Horti- 

 culture Inspection Supervisor, Division of Plant Industry, 999 N. Main Street, Glen 

 Ellyn, Illinois 60137 for a positive identification. An increase in the search for 

 other possible specimens is being made in the south Cook County area in an attempt to 

 determine the extent of the infestation. 



READ THE LABEL AND FOLLOW ALL PRECAUTIONS 



This weekly report was prepared as follows: 



INSECTS: H.B. Petty, Steve Moore, Roscoe Randell, Don Kuhlman, and Tim Cooley, Col- 

 lege of Agriculture , University of Illinois at Urbana-Champaign and the Illinois Na- 

 tural History Survey. 



WEEDS: Ellery Knake and Marshal McGlamery , Department of Agronomy , and A.J. Turgeon, 

 Department of Horticulture. 



PLANT DISEASES: M.C. Shurtleff and Tim Bowyer, Department of Plant Pathology. 



AG COMMUNICATIONS: Ray Wood is. 



AG ENGINEERING: John C. Siemens. 



The information for this report was gathered by these people, staff members, county 

 Extension advisers, and others, in cooperation with the USDA Animal and Plant Health 

 Inspection service. 



The Illinois Cooperative Extension Service provides equal opportunities in programs 

 and employment. 



