INSECT PESTS AND THEIR CONTROL 



993 



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larva of moth. It feeds on the foliage of apple and a number of other trees. 

 It makes large nests or web tents in which caterpillars stay when not feeding. 

 Treatment. — Spray the trees with arsenate of lead when the nests 

 first appear. Make later application if necessary. 

 Farm. Bull. 662. 



The Brown-Tail Moth (Euproctis chnjsorrhoea, Linn.). — This well- 

 known caterpillar was accidentally introduced into Massachusetts from 

 Europe. It has now spread over a large part of New England and is still 

 extending its territory. The moths appear early in July and the female 

 deposits masses of eggs on 

 the under side of leaves. 

 The young caterpillars web 

 terminal leaves together 

 and spend the winter in 

 those nests' in partially 

 grown condition. They 

 resume feeding in the spring 

 and soon reach their full 

 development. 



Treatment. — C u t out 

 and burn all the winter 

 nests before the buds start. 

 Spray the trees with arse- 

 nate of lead, 4 pounds to 

 100 gallons. Band the 

 trees with tanglefoot to pre- 

 vent the ascent of cater- 

 pillars from other trees. 

 Farm. Bull. 264. 



Canker- Worm, The 

 Spring (Paleacrita vernata, Peck), and The Fall (Alsophila pometaria, 

 Harris). — The larvae of canker-worm moths are measuring worms about 

 an inch long, dark-colored and variously striped. The adult males are 

 winged, females wingless. They defoliate apple trees. 



Treatment.— Cultivate orchards well in summer to destroy pupae. 

 Apply sprays of arsenate of lead 4 or 5 pounds to 100 gallons water, first 

 before the blossoms open; second, just after petals fall. Apply barriers of 

 tanglefoot or cotton batting to the trunks of trees to prevent the ascent 

 of the moths to lay eggs. 



Bur. Fnt. Cir. 9; Bur. Ent. Bull. 68, Pt, 2. 



The Cherry Fruit Flies (Rhagoletis cingulata, Loew, and R. fausta, 0. 

 S.). — Two-winged flies deposit eggs in cherries. Maggots develop in the 

 fruit on the tree, causing it to rot on one side. They enter ground to. 

 pupate. 



1 Farm. Bull. 264. 

 63 



Brown-Tail Moth 

 (Euproctis chrysorrhoea.y 

 Female moth above, male moth below, 



larva or 



caterpillar at right, slightly enlarged. 



