FOOD PLANTS OF THE GIPSY MOTH IN AMERICA. ol 
SOUTHERN WHITE CEDAR AND RED MAPLE. 
Maple feeding was very light in the first stage; a gradual increase in the 
ensuing stages, which was never more than moderate. Cedar was not eaten in 
any stage even when the maple was in a withered condition. The growth of 
the larve varied greatly in this experiment. 
In Middleboro, Mass., a large area in a swamp where these species predomi- 
nate has been under observation for several years. During some seasons both 
the maples and the cedars have been defoliated, the latter by the large larve. 
The small amount of undergrowth and the few other species of trees are un- 
favored food for gipsy-moth larve, and in this case practically all the feeding 
has been confined to the two species under discussion. This field record fur- 
nishes information which is quite contradictory to the laboratory experiments, 
although such evidence is exceptional. 
AMERICAN HORNBEAM AND RED OAK. 
Feeding was continuous in all stages on the oak, but was very slight on the 
hornbeam in the first two stages, but later was much greater. A decided prefer- 
ence for oak was shown in all stages. The larve grew steadily and attained 
large size. A good percentage reached the adult stage. 
HOPHORNBEAM AND RED OAK. 
The larve fed freely in all stages on the oak, and the feeding increased from 
‘Slight at the start to moderately free on hornbeam at the close of the ex- 
periment. Larve grew rapidly and attained large size and a good percentage 
reached the adult stage. 
AMERICAN LINDEN AND RED MAPLE. 
The larve fed moderately on the maple throughout the experiment. Linden 
feeding was moderate in the first stage, falling off slightly in the second and 
third, and moderate in the remaining stages. The larve were of good size 
and a fair percentage of adults was obtained. 
ELM AND WHITE PINE. 
None of the first-stage larve started on these food plants passed beyond the 
third stage. They fed only on the elm and were of very small size. Those 
started in the third stage produced male and female moths. They fed slowly 
on these foods, and grew accordingly. 
In the field there has apparently been a steady decrease in the ee ao 
the pines being eaten by the large larve. 
HEMLOCK AND AMERICAN LINDEN. 
Larve fed freely on linden in all stages and very slightly on hemlock in the 
second stage. Feeding increased on the latter species in each successive stage. 
The larve attained moderate size, and a few adults were renred. 
HEMLOCK AND SUGAR MAPLE. 
There was no feeding on the hemlock during the first stage, but it increased 
gradually from the second to the sixth stage. Feeding was moderate on maple 
during the whole experiment. The larve reached medium size, and a few adults 
of both sexes were obtained. 
