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FOREST A IT D SHADE-TREE INSECTS 
SATIN MOTH ( Stil-pnotia salicis L. ) 
Oregon. E. C. Craighead (August): J. A. Beal reports that the satin moth 
has been found recently doing serious damage to introduced poplar trees, 
Fopulus alba , in Oregon. Partly defoliated trees were observed near 
G-ervais, north of Salem, and again farther south near Albany. Old 
pupal cases were very numerous, hatched 'egg masses were abundant, and 
in some instances fully half the foliage had been eaten from the lower 
part of the tree. This injury was reported by one owner to have been 
prosent for 2 or 3 years. Early in July two adults of this species 
were taken in Portland, so far as known the first authentic record of 
its occurrence there. 
FOREST TENT CATERPILLAR ( Mai aco soma disstria Hbn. ) 
Wisconsin. E. L. Chambers (September 26): Large tracts of willow have 
been defoliated by enormous armies of these caterpillars in the swamp 
lands of the State. They also attack other deciduous trees. 
FALL WEBWORM ( Hynhantria cunea Drury) 
Colorado. G-. M. List (September 20): The fall webworm is quite abundant 
in a number of mountain valleys. The injury is especially severe on 
narrowleaf cottonwood. Most of these trees along the Arkansas River, 
both above and below Salida, have been largely defoliated. 
California. E. 0. Essig (September 9): Webs are abundant on terminals 
of young madrona and other trees in Humboldt and Mendocino Counties. 
This is the mo.st noticeable outbreak ever observed by the writer. 
F. H. Wymore (September 20): This pest is very abundant on 
willow and black walnut trees along streams in the Sacramento Valley. 
FLAT -HEADED APPLE TREE BORER (Ch rysobothris femorata 01 i v.) 
Ohio. E. W.. Mendenh^ll (September 15): The flat-headed apx»le tree borer 
is abundant in -dogwood ^nd maples this year. 
Michigan. E. I. M.cDaniel (September 25): The flat-headed borer was re- 
ported from Ypsilanti, Jackson, Ann Arbor, Flint, Marcellus, and 
Holland last week. In most instances the injury was confined to 
maples, although various other trees have been attacked. 
WALKINGSTICK ( Piaph'eromera femorata Say) 
Michigan. E. I. McDaaiel (September 25): The walkingstick has appeared 
in Ogemaw and Iosco Counties. In the vicinity of West Branch and Tawas 
City red oaks are practically defoliated. The insect occurs on several 
kinds of trees but confines its feeding entirely to red oaks. It has 
LIBRARY 
STATE PLANT p/r&on 
