4 
State, as shown in Figure 1. The details are given later in this 
report. 
IN THE NEW ENGLAND STATES 
Data regarding the distribution of the satin moth in New England 
have been obtained from several sources. Much of the information 
for Massachusetts has been obtained from the State forester's office 
of the commissioner of conservation and from the division of plant 
pest control of the. State department of agriculture. The moth 
superintendents and tree wardens of many of the towns and cities 
in the State have reported on the conditions in the towns they repre- 
sent. Information from the other New England States has been 
OREGON 
Fig. 1. — Map of the State of Washington. The shaded portion shows the area in 
this State quarantined against the satin moth. The plus ( + ), at Bellingham, 
in the northwestern part, indicates the location of the first infestation of the 
satin moth found (in 1922) in the State. The small circles (0) denote the known 
infestations in British Columbia in 1924 
obtained from State entomologists and other interested parties, and 
these data have been supplemented by scouting work in Maine by 
State and Federal employees, and in New Hampshire, Connecticut, 
and Khode Island by assistants connected with the gipsy moth and 
brown-tail moth project. Much information has been collected by 
employees of this division in connection with their regular duties. 
The information obtained during the summer of 1920, when ex- 
tended scouting was done, showed that this insect had spread over 
an area of 642 square miles, including 60 towns in Massachusetts and 
4 in New Hampshire. Some of this spread occurred in the summer 
of 1920, but the occurrence of large larvae and pupae in the majority 
of the towns proved that in many cases the insect had been present 
the previous year. 
