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FOEEST AND SHADE-TREE INSECTS 
CANKERWORMS (G-eometridae) 
Vermont. H. L. Bailey (June 22).: Fall cankerworms ( Alsophila pometaria 
Harr.) are abundant in Ferrisburg, Addison County, western Vermont, 
on soft raaple, basswood, and other foliage. The larvae were nearly 
full grown on Juno 9. Spring cankerworms ( Palcacrita vernata Peck) 
are abundant on elms at occasional points from Burlington, Ghittenden 
County, western Vermont, south through Addison County. Somo elms 
were nearly defoliated on June 21, hut no larvae were present at that 
time and the pupae were found at the tree "bases. 
Connecticut. W. E. Britton (June 2U): Spotted infestations of A. pometaria 
on deciduous trees in Cheshire, Cornwall, Lime Rock, and Sharon were 
reported. A group of nine trees in Cheshire and many woodland trees 
in Lime Rock were completely stripped. 
Wisconsin. E. L. Chambers (June 28): Complete defoliation of many farm 
orchards and shado trees by cankerworms has occurred in southern 
Wisconsin during the last 2 weeks, whore control measures havo not 
been taken. 
C. L. Fluke (June 21): P. vernata is present on elm and apple 
in southeastern Wisconsin and very numerous in unsprayod orchards. 
Minnesota. A. G-. Ruggles (June): Many reports of cankerworms came in 
from around Saint Paul and Minneapolis and also from Thief River 
Falls, Pennington County, in northwestern Minnesota. 
North Dakota. J. A. Munro (June 21): Severe defoliation of troes by 
cankerworms is reported from Minot, Ward County, in the north-central 
part of the State. 
SPANWORMS (Geometridao) 
Connecticut. R. 3. Friend (June Ik) : Ennomos : subsignarius Hbn. roported 
attacking red maple, ash, cln, American hornbeam, and yellow birch at 
Monroe, in the southwestern part of the State. About 250 acres of 
woodland wore defoliated in an area restricted to low land. The 
larvae arc beginning to pupate. 
Pennsylvania. R. M. Baker (June 23): The small white geometrid, Physos - 
togania pustularia Guen. , is beginning to fly in numbers in wooded 
areas. 
FOREST TENT CATERPILLAR ( Malacosona disstria Hbn.) 
Vermont. K, W. Edwards (J\ine 10): Defoliation of maple and birch reported 
in woodland on Riker Mountain Range near Watcrbury, in the north- 
