88 



INSECTS INJURIOUS TO THE APPLE 



important, and one good spraying is usually sufficient. The 

 remedial measures recommended for the codling moth will also 

 control these caterpillars. 



The wingless females may be prevented from ascending trees 

 by a tanglefoot band three or four inches wide. These bands 

 should be applied late in March for the spring canker worm and 



FIG. 108. The fall canker worm attacks trees other than apple. A basswood defoliated 

 by attacks of this insect. (Original.) 



in late September for the fall canker worm. Before applying 

 tanglefoot bands, the rough bark should be slightly scraped in 

 order that no cracks are left untouched by this sticky mixture and 

 that the compound may not be wasted. Personal observation 

 leads us to believe that on very young trees it is safer to wind 

 paper bands, two or three inches in width, about the trunk and 

 apply tanglefoot bands on that, in order to avoid injuring the 

 young bark. Do not tie these bands tight. Tanglefoot bands. 



