126 



FRUIT INSECTS 



moths fly in June and July. The female has an expanse of 

 about If inches ; the male is a little smaller and more distinctly 

 marked. The female deposits her white, nearly round, slightly 



Fig. 138. — Moth of the red- 

 humped apple caterpillar. Nat. 

 size. 



Fig. 139. — Egg-mass of the 

 red-humped apple caterpillar. 

 Enlarged. 



flattened eggs in clusters of 40 to 100 on the underside of the 

 leaves (Fig. 139). The young caterpillars feed at first on the 

 underside of the leaves only, but as they grow larger eat the 



edges of the leaves. 



They feed in col- 



^^^^^^M| ^ onies and are soon 



able to strip a 

 branch of its leaves. 

 When full-grown 

 the caterpillars are 

 an inch or more in 

 length ; the head is 

 coral red, the body 

 is striped with black 

 and yellow or whitish lines and on the fourth segment there 

 is a prominent reddish hump (Fig. 140). The body is 

 ornamented with rows of blunt black tubercles, largest on the 



Fig. 140. — Red-humped apple caterpillars feeding. 



