- 609 ' 
FOR}- ST AND SHADS-TREE INSECTS 
GYPSY (Porthstrig/ dis'~yar L, ) 
Vere 
o''t. i'l. L. Tlaisdell (Se-oteriber 23 ) ^ Single-egf^-clur.ter infost- 
ations were discovered in the towns of Goshen and Gr :nville » loc--t- 
ed within the barri'^r zone in Addison CountY« These to\7ns a.re 
situat'd on high elevations in the Groen I'ountgin Rv-jige and ha.ve 
not previously been infested.. It is evident that these infestations 
bec'-Mse established as a result of uind snread of c temillars frora 
an infest3,tion existing aloni.'i tns !^ite River to the ea,st. 
Massachusetts, A, F, Burgess (October 20): Recently a new gypsy moth 
infest'-vt I'-'n was discovered in t'.u; western nart of North Acarr.s 
Tomohio, bordering the Williar'stO'vn towniliu©. This infestr:tion 
is rel.atively snail and ought to be easi].y ext<?rninated. Its 
loc--tion . is several Iniles fron any other infestation . found in this 
particular section for several years, 
FOREST Tin- 'T CATERPILLAR ( ffelacosoma d isstria Hbn. ) 
Minnesota, R. K, Nggel (October): Egg-mass counts 1-ote in Seutember 
in the Gun.riirtt area, in northeastern Minnesota, snowed that there 
were only three or four masses ner aver.'-ge-sized tree. Although 
based, on a rrtlier s-'g,!! area, the count suroorts the ebserv--- tions 
maxle in July tli,at the number of emerging mnt.hs was very low. At 
thrit time it was esti.uated tnat between 90 and 9^' 'oercen t of the 
la.rvae and wuue.e would be destroved bv tachinids and sarcouhagids, 
FALL WEBiyORIvl ( nyohantria oinea, Drury) 
Rhode Island, A, S, Stene (October ?6) : This snecies was not nearly' 
so abundant as last yea.r. 
Mississiooi, >i, L, Douglass (October 26): Absence reported as very 
noticeable in the Grenada district this fall, 
A CATERPILLAR ( Heteroc ->nroa manteo Dbldy, ) 
Minnesota, R, K, Nagel (October): A very heavy infestation reverted 
in t.he Harcell Ra.nger district of Chi'ouew.a National Forest, north- 
ern Minnesota, Defoliation of birch, basswood, and oak was very 
n.eavy and the affected area resembled those defoliated by the 
for-sf tent caterpillar at the pe'-’X of the infestation. On an 
area of 126 square feet oreptiu .1 larvajB averaged U .7 per square 
foot, and tne degree of par 'isitization of specimens taken from 
under t’le leaftnold appeared to be ver^r low, 
CANKERWORMS (Geometridae) 
Illinois, Vlt P, Flint (October 26): Exam in g.t ions made during the month 
indicate that ou'oae are present in the soil in very large nu.mbers 
rond p.puarently in a healthy condition. There is every indication 
that the outbreak of last soring will continue in 1939 * 
