FOREST 
-15s- 
A N D SHADE - TREE INSECTS 
CANKERWORMS (Gepmetridae) 
Connecticut. E. P. Pelt (May 23): Eall cankerworms (Alsophila pometaria 
Harr.) relatively scarce* although a few have "been reported in 
southern Connecticut. 
Ohio. T. H. Parks (May 22): Spring cankerworms ( Paleacrita vernatg Peck) 
and the fall species both very abundant and seriously defoliating 
elm trees along streams in the central counties of Ohio. Spring 
cankerworms began hatching the first week of May and the fall 
cankerworms a few days later. 
Illinois. W. P. Flint (May 26): Outbreak resulted in heavy defoliation 
of woodland elms and unsprayed apple trees throughout the north- 
western and west-central parts of Illinois. Thousands of elms and 
honey locusts in this area almost completely defoliated. Nearly all 
farm orchards in same condition. Parasites relatively scarce. 
Larvae through feeding ovor nearly all the area except the extreme 
northern part. 
South Dakota. H. C. Severin (May 12): Much trouble at present in 
Charles Mix and Jackson Counties. At Brookings elm and oak are 
badly defoliated. 
Iowa. C. J. Drake (May 26): Spring cankerworm extremely abundant 
throughout most of the southern half of the State, and some infes- 
tation here and there in the northern counties. Many elm and apple 
trees in the vicinity of Des Moines entirely defoliated. Although 
spring cankerworm by far the dominant species, some fall canker- 
worms found. More damage done to elm and unsprayed apple trees 
in southern Iowa than for several years. 
Missouri. L. Haseman (May 24): Spring cankerworm more destructive than 
ever known before in the Kansas City area, particularly in the 
country surrounding Columbia, and, judging by reports, in other 
parts of the State. Dozens of large mature elms completely stripped 
of foliage. Reported as very serious along the Mississippi River, , 
in northeastern Missouri, with the heaviest infestation in the St. 
Louis area. 
Nebraska. M. H. Swenk (May IS): Inquiries as to control of spring 
cankerworm on elm and other shade trees received from Harlan, 
Douglas, and Otoe Counties on May 5, 8, and 10, respectively. 
Kansas. H. R. Bryson (May 25): More abundant than usual. Injury to 
elms and apple trees extended almost as far west in the State as 
apples are grown. Almost complete defoliation in many localities. 
A smaller population of caterpillars in cities where control work 
was done last year. 
