REPORT OF THE STATE ENTOMOLOGIST 1907 25 
4 
_ were then destroying forests of hickory and chestnut and, in addi- 
tion, inflicting much damage on fruit trees. A later outbreak in 
_Jowa was recorded by Prof. Herbert Osborn in 1896. He states 
that this species was unusually destructive in one of the south- 
eastern counties (Washington), a correspondent of his reporting 
_that the measuring worms had defoliated “acres and acres” of 
timber land. There is, in addition, the outbreak in the Catskill 
_ forests mentioned above. = 
This measuring worm appears to be making a place for itself 
among the more destructive leaf feeders affecting some of our 
fruit trees, particularly the apple. The outbreak in the Georgia 
forests referred to above, was accompanied by much injury to 
fruit trees in that vicinity. Prof. H. Garman, writing of this insect 
im 1904, states that this species has for several seasons been very 
injurious to an apple orchard in Muhlenberg county, Ky. It would 
not be surprising if a number of outbreaks, hitherto attributed to 
Our more common canker worms, were in reality the work of 
this species. 
Description. The eggs of this moth are about the size of a 
‘small pin head, conical in shape, somewhat coiapressed at the 
points. They are first yellowish, then olive-green and later dark 
brown. ‘They are covered with a thick, sticky, glutinous matter 
and adhere firmly to the object: on which they are deposited. 
Larva. Length 2 inches. Head a dull reddish or yellowish 
brown, the thoracic shield darker and distinctly fuscous along the 
margins. The body mostly a dull brownish black, the suranal 
plate and anal prolegs yellowish brown. There are irregular, 
yellowish markings along the sublateral lines, they being repre- 
sented by inconspicuous dots on the second and third thoracic 
segments. On the first abdominal segment these markings are 
so thick and contiguous in some specimens as to give the appear- 
ance of short, sublateral lines extending most of the length of 
the segment. On the third abdominal segment the yellowish mark- 
ings are distinctly produced laterally and towards the median line, 
forming a pair of submedian irregularly oval, reddish yellow marks, 
very suggestive of tubercles. On the remaining segments this sub- 
lateral marking is indicated only by inconspicuous dots, a pair on 
the anterior and posterior annulets of each segment, the yellow 
Markings becoming a little thicker and more irregular on the 11th, 
I2th and 13th segments. Head distinctly broader anteriorly, the 
clypeus sunken, yellowish brown, the labrum pale yellowish with 
