Geometridae 
by D. W. Coquillet in the “ Bulletins of the United States Depart¬ 
ment of Agriculture,” New Series, No. 7, p. 64. From this 
Fig. 205 , — C. plumigeraria. a , male; b, female, magnified. (After 
Coquillet, “ Bull. U. S. Dept. Agric.,” New Series, No. 7, p. 66.) 
article we have taken the accompanying cuts, and from it we 
draw some of the facts herein set forth. In describing the insect 
Mr. Coquillet says: " The color of the caterpillar is a light pinkish 
gray, varied with a darker gray or purplish, or sometimes with 
black and yellow, but never 
marked with distinct lines; 
the piliferous spots are black 
or dark brown, and the spir¬ 
acles are orange yellow, ringed 
with black, and usually situ¬ 
ated on a yellow spot. The 
worms become full grown in 
the latter part of April or dur¬ 
ing the month of May; they 
then enter the earth to a 
depth of from two to four 
inches and form small cells, 
but do not spin cocoons. 
The change to the chrysalis takes place shortly after the cells are 
completed, and the chrysalis remains unchanged throughout the 
entire summer and until early in the following year, when they 
are changed into moths, which emerge from the ground from the 
first week in January to the last week in March. The male moth 
346 
Fig, 206. — C. phimigeraria. a, larva, 
magnified; b, segment viewed laterally; c y 
do. viewed dorsally. (After Coquillet, 
“ Bull. U. S. Dept. Agric.,” New Series, 
No. 7, p. 65.) 
