GYPSY AND BROWN-TAIL MOTHS AND THEIR CONTROL 



27 



localities was very great. Fortunately, a record of all these ship- 

 ments was available. It was found that 261 shipments had been sent 

 to the District of Columbia and the following States: Connecticut, 

 Delaware, Florida, Illinois, Indiana, Kentucky, Maryland, Minnesota, 

 Missouri, New York, North Carolina, Ohio, Pennsylvania, Virginia, 

 and Wisconsin. These shipments were traced and the planted stock 

 was inspected by State or Federal officials. In addition, 318 ship- 

 ments that had been distributed in New Jersey were followed up in 

 the same way. 



As a result of this work small infestations were found at Loretto, 

 Pa.; Garrison, Roslyn, and Kew Gardens, N. Y.; and Deal Beach, 

 Wyckoff, South Orange, Scotch Plains, Paterson, Madison, Glen 

 Rock, and Elizabeth, N. J. These small infestations were cleaned up 

 the following year, and repeated scouting has failed to indicate the 

 presence of the pest. 



In the meantime the center of the infested area was receiving in- 

 tensive treatment, including spraying, and an enormous number of 

 egg clusters were destroyed. It is significant that no trees in New 

 Jersey have suffered from gypsy moth feeding since that time. During 

 the next 4 years scouting and clean-up operations were continued 

 throughout the known infested area, particular attention being paid 

 to extensive woodlands north of Somerville, known as the Watchung 

 Ridge. These areas were heavily wooded and were difficult and 

 expensive to work. 



Since 1925 the gypsy moth has been steadily reduced in numbers. 

 The scouting and clean-up work covered over 2,369 square miles, 

 although the towns in which colonies were found were in an area of 

 924 square miles. Federal operations were discontinued in 1932, 

 as no infestations had been discovered since 1929. Since 1932 the 

 State force has been making inspections in many localities and has 

 uncovered a few small infestations along the northern border of the 

 old infested area. These have been treated by the Federal Govern- 

 ment in cooperation with the State. Although a large amount of 

 intensive work has been done, no infestation has been found during 

 the past 2 years. 



Table 1 shows the number of townships in the barrier zone, New 

 York, and New Jersey where the gypsy moth has been eradicated and 

 the number of infestations that have been cleaned up. It indicates the 

 protection that has been afforded to other sections of the United States. 



Table 1. — Townships in the barrier zone, New York, and New Jersey, where 

 gypsy moth infestations have been eradicated, with the number of infestations 

 cleaned up, fiscal years 1920-1935 



State 



Infested 

 townships 



Infestations 

 extermi- 

 nated 



State 



Infested 

 townships 



Infestations 

 extermi- 

 nated 



In barrier zone: 



Connecticut 



Massachusetts 



Number 

 20 

 27 

 24 

 18 



Number 



92 

 362 



75 



78 



South and west of barrier 

 zone: 



Number 

 38 

 17 



Number 

 878 



New York ._. ... 



New York _. 



567 





Total 



Grand total 







55 



1,445 



Total 



89 



607 



144 



2,052 









