ACTIVE WORMS FEEDING WITHIN WEBBED LEAVES 299 



Fig. 447. — Larva of the Bud-moth. 

 Enlarged and natural size. Original. 



gether with silk, feeding inside, so that small, dead, brown clusters are 



to be seen here and there. When full grown, the larvae are brownish, 



and three quarters of an inch long. 

 The caterpillars change to pupse 



within the webbed leaves, and later 



the small gray and brown moths 



appear and lay eggs on the under- 

 side of leaves. The tiny worms 



which hatch from these feed for a 



few weeks and then migrate to 



twigs and make silk cases in which 



they pass the winter. 



Spraying with arsenicals is effective if done very early when the 



buds are just expanding, 

 and repeated as soon as 

 the leaves are fairly out- 

 Regular seasonal spray- 

 ings will control this species 

 through poisoning the 

 larvse when they first hatch 

 from the eggs in midsum- 

 mer. For this reason they 



Fig. 448. -The Bud-moth. Enlarged and ^'^ ^«* ^P* *^ ^^ «^^^ ^^ 



natural size. Original. well-cared-for orchards. 



The Blackhead Cranberry Worm (Rhopobota {Eudemis) vacdniana 



Pack.) 



Small, velvety green caterpillars, with shining black heads, draw to- 

 gether the tip leaves on uprights and feed within. The pest is com- 

 monly known as the "fire worm " because of the scorched appearance 

 of a badly infested bog. There are two broods annually. The species 

 over^vinters as an egg attached to the under side of the leaf. 



Where sufficient water is available, it is an effective plan to reflow 

 for two or three days when the worms are coming down out of the 

 uprights and pupating. If this is not feasible, the only satisfactory 



