INSECTS INJURIOUS TO ORCHARD FRUITS 



503 



The Evergreen Bagworm * 



The Bagworm is more frequently considered as a shade-tree 

 pest than as an orchard enemy. At the same time its possi- 

 bilities for injury in the orchard are of great importance. We 

 have seen apple orchards with many trees killed in a period 

 of two years and in one instance in Kansas a ninety-acre orchard 



. 



! 



FIG. 429. Canker worm moths and egg masses caught on sticky band. 

 (After W. . Britton.) 



was abandoned because the insect had injured most of the trees 

 beyond recovery. The bagworm feeds on evergreens such as 

 juniper or red-cedar and arborvitse as well as on fruit and shade 

 trees. It attacks locust, maple, poplar, apple, plum and many 

 other trees, showing a preference for the evergreens and the 

 locust. 



* Thyridopteryx ephemeroeformis Haw. Family Psychidce. See Howard 

 and Chittenden, Farmers' Bulletin 701, U. S. Dept. of Agr., and L. Haseman, 

 Bulletin 104-, Missouri Agr. Expt. Station. 



