ACTIVE WORMS FEEDING WITHIN WEBBED LEAVES 297 



webs may be made in succession by the same colony. The caterpil- 

 lars have a dark body, covered with long, whitish hairs. The work 

 is entirely distinct from that of the tent caterpillar, which builds its 

 nest in the forks of branches and does not include any foliage in it. 



When full grown, the cater- 

 pillars disperse, liide away, and 

 spin up cocoons, from which 

 the adult moths emerge the fol- 

 lowing summer. In the South 

 there are two generations. 



Trees may be spraj^ed with 

 arsenate of lead or Paris green, 

 and the caterpillars thus killed 

 when they extend their webs 

 over new and poisoned foliage. 

 Or the nests may be cut off 

 when first observed, and de- 

 stroyed, along with the cater- 

 pillars in them. 



The Leaf Grumpier 



(Mineola indiginella Zell.) 



In winter dark little twisted 

 cases of silk mixed with bits 

 of leaves may be seen attached to twigs of apple trees. From these, 

 brownish red caterpillars, one fourth of an inch long, come out in 



Fig. 442.— Work of the Leaf Grumpier. 

 Original. 



^4||||^ 



'^US.sirt* 



Fig. 443. — Larva of the Leaf Grum- 

 pier. Enlarged and natural size. 

 Original. 



Fig. 444. — Larval cases of the Leaf 

 Grumpier on twig. Original. 



