-671- 
P.ennsylvania 
Adams, Allegheny, Berks, Carbon, Payette, Chester, Franklin, C-reene, 
Lancaster, Northumberland, Schuylkill, Washington. 
Virginia : , ? "' m 
Alleghany, Augusta, Highland, Shenandoah. 
Maryland 
Garrett. 
New York 
Suffolk. 
GIPSY MOTH and BROWN-TAIL MOTH 1 
( Porthetria dispar L. ) 
There was less defoliation caused by the gipsy moth/ this summer than 
for several years, and the trees in most of the area were practically free 
from gipsy moth feeding. Defoliation was severe in the counties of Bristol, 
Plymouth, and Barnstable, Mass. There was recorded a total of 204,720 
acres in New England which showed some feeding by the gipsy moth caterpillars, 
but over one-half of this was classified as less than 10 per cent defoliated, 
leaving 101,533 acres classified as from 10 to 100 per cent defoliated, and 
over one- half of this amount (54,710 acres) was in the southeastern section 
of Massachusetts. No inf e^ai^p^ of the gipsy moth was found in 1930 to 
1931 on Long Island ^oy the /conservation department, except in the towns of 
North Hempstead and Oyster Bay. In the former, 110 egg clusters were dis- 
covered «in. 17 infested localities, and in the latter, 57 were found in 24 
infested localities, practically all of these infestations were found in 
woodland. During the past year to July 1, 1931, no gipsy moth infestation 
was found in the barrier-zone area in 7ergiont in the scouted territory. 
Early in July, 1931, a scattered infestation was found in Colebrook, _ Conn. , 
near the Massachusetts State line. A group of towns including Sandisfield 
and New Marlboro, Mass., and North Canaan, Canaan, and Norfolk, Conn., have 
carried numerous infestations, many of them in woodland, during the last 
two years. The result of work in the New York barrier zone shows somewhat 
fewer infestations than during the previous fiscal year and indicates that 
marked progress has been made in cleaning up infested locations. The last 
gipsy-moth infestation in New Jersey was foimc 1 in May, 1929. The southern 
half of Bridgewater Township and the northern half of Hillsboro Township 
have been examined with special care, as this area was the most heavily 
infested when the insect was first found in New Jerse:' - . The work done thus 
far has failed to reveal any trace of the gipsy moth during 1930-31. 
The brown- tail moth ( Ny.?mia phaeorrhoea Don. ) has not been found out- 
side the regulated area this •''ear. 
1 Plant Quarantine and Control Administration, tJ. S. D. A. 
