132 ROYAL MOTHS. 
As a general rule these insects are not injurious to our 
fruit-trees, but infest other trees, such as oaks and maples. 
They not infrequently become so numerous and destructive 
_that but few leaves are left on the oak trees covering many 
square miles and one cannot stepupon the ground under the 
trees without stepping upon some of these hungry worms. One 
species, however, is found 
not alone on the oak, but 
occurs also upon the rasp- 
berry andblackberry. It 
is the Orange striped Oak- 
worm (Anisota senatoria 
Hub.). The caterpillars 
have a jet-black head; the 
body is dull-black, with 
four dull-orange stripes 
along each side, and a 
trace of a fifth stripe 
along the base of thelegs; 
all the stripes run to the 
end of the eleventh seg- 
ment; the last segment is 
black. The under side is 
marked with a broad yel- 
low stripe along the 
middle. On each side of the second segment is a slender, 
long, slightly curved horn, and along each side of the body 
three rows of short spines. The caterpillars, of which we 
have only one annual brood, measure 45 mm. in length. A 
caterpillar is shown with other oak feeding caterpillars in 
Fig. 134. 
The sexes of this moth vary greatly. The male has och- 
reous-brown wings with a purplish tinge; the fore-wings are 
semi-transparent in the middle. There is a conspicuous 
white, round discal spot and a dark oblique line, from a 
little before the apex across the wing, parallel with the 
Fig. 133.—Anisota senatoria Hub.; male 
below, female above. Original. 
