I4 NEW YORK STATE MUSEUM 
two years. Our investigations referred to above showed that in 
some sections of the infested area at least, healthy pupae were 
quite abundant and it would not be surprising were the depredations 
of last year to be repeated over a more extended area in 1908. 
Early history. This species rarely inflicts extensive injuries 
in New York State. Dr Lintner, writing of this form in 1902; 
states that the caterpillar very seldom appears in harmful numbers 
in New York or the Eastern States. He adds that it was reported 
that year from Monticello, Sullivan co., N. Y. on the grounds of 
Mr John D. Lyon, where a number of soft maple trees had been 
completely defoliated during the summer. ‘This injury, however, 
was insignificant compared with the outbreak observed in this State 
during 1906 and the present season. This species has long been 
known as an enemy of soft maples, particularly in the Central and 
Western States. Messrs Walsh and Riley, writing in 1869, state 
that they have known of maples being badly stripped by this cater- 
pillar, while Townend Glover, the following year, states that it 
causes considerable injury to silver maples at Washington, D. C. 
Riley, in 1872, records this species as a serious enemy of soft and 
silver maples, publishing at that time a brief statement of its 
injuries in Kansas. Furthermore, he states that many of the soft 
maples of Lincoln, Neb. were stripped by this pest in August 1888. 
Messrs Riley and Howard record depredations by this species in 
Mississippi during the year 1890. Prof. Herbert Osborn, writing 
in 1897, states that it sometimes strips maples in Iowa. Dr J. B. 
Smith, in his List of Insects of New Jersey, ranks this form as 
sometimes injurious to soft maples and more rarely, oak. 
Description. The adult insect is a rather heavy bodied moth 
with a wing spread of about 134 inches. It is easily recognized by 
the pale rose colored fore wings crossed by a broad, oblique, pale 
yellow band and the pale yellowish hind wings. The body is also 
yellowish. The males may be recognized by the more pectinate 
antennae. A nearly white variety of this species has been described 
. by the late Professor Grote. i 
Pupa. It is about 34 inch long, shining dark brown and tapering — 
to a rather sharply pointed posterior extremity. 
Larva. The full grown caterpillar or larva is about an inch and 
a half long. It has a yellowish head, is pale yellowish green and 
is alternately striped longitudinally with eight very light yellow- 
ish green lines and seven darker green ones, the latter inclining 
to black and the median one usually darkest. Laterally, on the 
