-490- 
PLANT QUAPuWPINE AND CONTROL ADMINISTPAT10N 
Notes abstracted from. "News Letter," August, 1931 
(Hot for publication) 
GIPSY MOTH ( Porthetria dispar L. ) 
During July each year information is gathered as to the amount of defolia- 
tion caused by the gipsy moth. Last year there was considerably less reported 
than the previous year, and early indications are that there will he less re- 
ported this season than last year. There is, however, severe defoliation in 
the area in Massachusetts south of Brockton, which will he reported on later.. 
A larva of the gipsy moth was intercepted at Seattle on an Azalea plant in 
furnishings from Japan. In 1930 both lar&ae and pupae of this insect were 
found at Honolulu, Hawaii, on maple, pine, and rose from Japan. The gipsy 
moth is more commonly intercepted in the egg stage. 
B2Qv7N-TAIL MOTH ( Nygmia phae^rrhooa Don. ) 
Evidence based on the number of brown- tail webs which were cut in New 
England during the winter of 1930-31 showed that this insect was more abundant 
£han usual in some sections. This was particularly true in southwestern Maine 
where the infestation was especially heavy on small groups of apple trees in 
villages. This also applies to a considerable extent in central and south- 
eastern New Hampshire. In Massachusetts the webs are cut annually rather con- 
sistently by the local moth superintendents, and considerable less webs were 
cut last winter than during the previous winter. In Maine a total of 320,954 
webs and 69 bushels of webs were cut in the 9 towns which reported, the greatest 
number for any one town being 307,000 webs at Biddeford. In New Hampshire a 
total of 655,076 webs were cut in 50 towns, the greatest number in any one 
town being 80,757 at Pembroke. In Massachusetts there were 36,564 webs and 
312J- bushels cut in the winter of 1930-31 as compared with 75,684 webs and 307 
bushels cut the previous winter. In some cases the number of webs cut are re- 
ported by bushels. It is practically impossible to arrive at the average num- 
ber of webs in a, bushel for they vary greatly in size and also in the amount 
of twig that is left on each web. Figures range from 1,500 to 2,800 webs to the 
bushel, and if we take as an average 2,000 webs to the bushel, it gives us 
763,000 webs. Using this figure, with the 1,012,604 webs which were reported 
cut, gives a grand total of 1,775,604 webs cut and destroyed during the winter 
of 1930-31 in New England. TJebs were cut in several other towns especially in 
Maine, but no record as to the number is available. 
PINK DOLL '.70 EM ( Pectlito-phora gossypiella Saund. ) 
The field inspection performed in the Salt River Valley of Arizona prior 
to July 1 has been more or less at random, in an endeavor to locate infested 
fields. At this time 6 such fields have been found, 3 south of Laveen and 3 
in the Goody ear- to- Que en Creek area. Beginning with July, weekly infestation 
counts are to be made from some 20 fields in the Salt River Valley and several 
fields in the vicinity of Coolidge and Casa Grande in the Gila Valley. Some 
of the fields are in stub cotton and others in nlanted cotton of both short 
