
- 17 

Previous collections: had shown that the parasites nentioned above, as 
sae as the predacious beetle Calosoma, sycophanta, all of which were 
stablished in New England at pout £5. years ago, were present in the infested 
ants area. Except for Compsilura concinnata, which attacks a 
large munber of native'insects and was “known to have spread. into Pennsylvania 
hefore the gipsy moth infestation'was found, it is difficult + to understand 
how oo SAS established thenselves in the Pennsylvania infestation. 
During September ‘and petouke Shame of parasites of a birch leaf- 
mining sawfly , Phyllotoma hemorata, were received at the Melrose Highlands, 
Mass., laboratory. This material was collected at Freistadt, Austria, and 
was forwarded by W. F. Sellers of the Budapest, Hungary, substation. For 
the most part, the adults of the various parasites contained in this — 
aterial will not issue until next spring. . Phyllotoma nenorata isa _ 
aaa spvocies that has attracted corisiderable attention in northern 
New England and New York State during the past few years because of the 
_ anjury it causes to white ‘birch. 
_ . During the lat’ ter vart of September and the first. part of October, 
D. L. Parker, i the Melrose Highlands, Mass., station made examinations 
in 11 locations in New Hampshire, three in Maine, and one in Mass sachusetts, 
to ascertain the effectiveness of apanteles solitarius which was first 
introduced from Europe: by the station in 1927 and:colonized as a satin 
moth parasite. The information obtained by Mr. Parker indicates that 
the species is this year-responsible for a great reduction of the 
original fall »nopulation of Det moth and there will be some ad- 
ditionel parasitization of the survivors in the spring. Each small 
in moth larva constructs an individual web in which to spend the 
winter. Cut of a total of 2,011 hibernacula exemined, 48.9 percent a soca 
showel evidence that the larvachad been parasitized by the Apanteles, the 
para sluiz ation renging from 14.5 percent of 193 hibernacula noted at Yarmouth, 
Mass., to 66.7 percent for $06 hibernacula examined at Ossipee, N. H. 
R. CG. Brown, of the Melrose Highlands, Mass., laboratory, spent the 
period from October 2 to 18 in Maine laying out plots for further study of 
the beech scale. Thirty-seven plots of 50.beech trees each were laid out 
:in that part of the State east cf Augusta and extending to Calais. The 
majority of the plots are 1c cated where the scale is at present abundant 
hut some are in territory where the insect has not yet been found and 
will serve as checks as the study progresses. All trees were tagged and 
exoiined and notes were made on their average diameter, condition, and 
crown class, as well as on the degree of infestation by. the scale, the 
absence or presence of other insect enemies, the fungus Nectria, and slime 
flux; the two latter being often found on trees infested with the scale. 
Mir. Brown is conducting this work under the Emergency Conservation fund 
and wnile in Maine was accompanied by W. L. Baker, of this station, and 
T. T. Ayers, of the Burean of Plant Industry. Dr. syers is studying the 
taxonony of the genus Nectria and accompanied Messrs. Brown and Baker to 
‘make observe tions rot ite Fe othor fungi, and slime eyein the. plots. 
