-3- 



Infestation during 1972 may follow the 1959 

 pattern. In order to record the location of 

 Brood XIX in Illinois, we need information 

 about where they have emerged. Please mail 

 specimens of cicadas to Dr. Lewis J. Stannard, 

 285 Natural Resources Building, Urbana, Illi- 

 nois 61801. 



Oystershell scale crawlers are beginning to 

 hatch and move onto new growth. This pest is 

 common on lilac, willow, birch, and other 

 trees and shrubs. These young crawlers will 

 soon begin developing a hard- shelled, protec- 

 tive cover over themselves. For control, 

 thoroughly spray the young crawlers during 

 late May in southern Illinois, early June in 

 central and mid- June, in the northern sec- 

 tion. Use a spray mixture containing either 

 malathion or diazinon liquid concentrate. 

 Follow label directions for rates in mixing. 

 For good results, three sprays should be ap- 

 plied about 10 days apart. 



Bronze birch borer adults are beginning to 

 emerge from the upper limbs of birch trees. 

 The bronze beetles will soon lay eggs on 

 roughened bark on the upper part of trees. 

 Good control of this borer can be achieved 

 if the trunk and limbs are sprayed with di- 

 methoate (Cyton, De-Fend) as the eggs start 

 to hatch. Use one cup of the 2-pound-per- 

 gallon formulation per 25 gallons of water. 

 Begin about May 25 in southern Illinois and 

 June 5 in the northern section. Repeat the 

 dimethoate spray three weeks later. Spray 

 only those trees that are infested. 



Eastern tent caterpillars are leaving their 

 tree nests and moving across lawns and shrub- 

 bery in search of a place to spin their co- 

 coons. These caterpillars are generally 

 black-colored with a white stripe down the 

 back. They like to spin their white co- 

 coons on tree trunks, under the siding on 

 houses, and on other objects. Moths will 

 emerge and lay eggs for next year's genera- 

 tion. No controls are needed at this time. 



Adult cicada. 



Cankerworms , "inch worms" or "measuring worms" as they are called, are feeding on 

 the foliage of fruit trees and shade trees in some areas. These brownish worms with 

 whitish stripes along their sides eat and skeletonize the foliage. They spin silken 

 threads from branch to branch and to the ground. If damage is severe, a spray of 

 carbaryl (Sevin) or malathion will provide control. Recently, a disease organism 



