REPORT OF THE STATE ENTOMOLOGIST 1906 57 
destructive enemy of European elms, in particular, has been abnor- 
mally abundant in certain sections. It was reported as being quite 
destructive at Oyster Bay, Ossining, Fort Edward and Ithaca, while 
personal observations show that it inflicted serious injuries to 
many elms in Albany and Troy. Most of the damage in the latter 
places followed the relaxation of repressive measures, due to the 
erroneous idea that the insect was well under control and therefore 
capable of inflicting relatively little harm. Trees which received 
timely applications of arsenical poisons were practically exempt 
from injury, while others, which in some sections were in the large 
majority, lost a very high percentage of their foliage, some being 
nearly stripped. The experience of recent years has demonstrated 
the practicability of controlling this insect in cities and villages. 
A summarized detailed account of this insect has been prepared 
and will be issued in a forthcoming bulletin. 
Fall webworm (Hyphantria textor Harr.). This well 
known species has been less abundant than usual as a rule, though 
larvae were received from different sections of the State from the 
latter part of August to the middle of September. The caterpillars, 
however, were in no instance excessively abundant. This species 
is easily controlled by removing the conspicuous nests and crushing 
the caterpillars within them, or by timely applications of an ar- 
senical poison. 
False maple scale (Phenacoccus acericola King). 
This species appears to be establishing a claim as one of the serious 
pests of the hard maple in New York State, since it has been quite 
injurious to trees in the vicinity of New York city, in particular, 
during the past four or five years. It was very abundant last 
summer at Port Chester, Middletown, and probably in other villages 
in the southern part of the State. It may be distinguished at once 
from the better known cottony maple scale by the fact that it occurs 
mostly on the foliage, the males making minute cottonlike cocoons 
on the trunk. These latter are frequently so close to each other as 
to give the infested tree an appearance of having been whitewashed. 
There are probably three generations of this destructive species in 
New York State. The young winter upon the trunk, beginning 
activities with the approach of warm weather, the second brood 
hatches in June and the third in August. The best method of 
controlling this species is in all probability by thorough spraying 
with a whale oil soap solution or a kerosene emulsion when the 
minute, yellowish young are crawling in abundance upon the leaves. 
This can be easily determined by a little observation. Whale oil 
