LEPIDOPTERA 



605 



Figure 732 represents the 

 venation of the wings of 

 Pyromorpha marteni, a spe- 

 cies found in the Rocky 

 Mountains. 



The species of the genus 

 Harrisina differ from the 

 typical form, of the family 

 in that the anal area of the 

 hind wings is greatly re- 

 duced, there being only two 

 short, strongly curved, anal 

 veins. As in other mem- 

 bers of the family, there are 

 two well-developed anal 

 veins preserved in the fore 

 wings. The following is 

 the best -known species of 

 this genus. 



The grape-leaf skeleton- 

 izer, Harnsina americdna — 

 The wings of this moth are 



Fig. 731. — Wings of Pyromorpha dimidiata. 

 long and narrow (Fig. 733) ; the abdomen is long, and widened towards 



^L-J^^^ 



Fig. 732. — Wings of Pyromorpha marteni. 



Fig. 733. — Harrisina 

 americana. 



the caudal end. It is green- 

 ish black in color, with the 

 pro thorax reddish orange. 

 The larva feeds on the leaves 

 of grape and of the Virginia 

 creeper. An entire brood 

 of these larvae will feed side 

 by side on a single leaf while 

 young. This species rarely 

 becomes of economic im- 

 portance. 



Family DALCERID^ 



In this family the body is small; the antennae are short; and 

 the wings are broad. In the fore wings there is a large acces- 

 sory cell which is i st R3 ; and in the hind wings veins Sc and R are 

 connected at a point. 



