APPLE INSECTS — BffDS AND FOLIAGE 



43 



^ 



in which the caterpillar lives for 6 or 7 weeks, 

 going out to feed mostly at night. It often 

 draws other leaves toward it and fastens them, 

 thus forming a sort of nest. Some of the partly 

 eaten leaves soon turn brown, thus rendering 

 the work of the insect quite conspicuous. Where 

 terminal buds are attacked the caterpillar some- 

 times burrows down the shoot for 2 or 3 inches, 

 causing it to die. 



The mature, nearly naked caterpillar is about 

 half an inch in length, and of a cinnamon- 

 brown color, with the head, thoracic shield 

 and true legs black. Becoming full-grown in 

 June, the caterpillars transform, and ten days 

 are spent as brown pupa in silken lined cocoons 

 formed of leaves either rolled or tied together 

 in the nests. The moths emerge over a period 

 of six weeks, from June 5 to July 15 in New 

 York. The dark ash-gray moths, with a broad, 

 cream-white band across the front wings, which have an ex- 

 panse of 5 of an inch, are night-flyers and closely mimic the 



bark when at rest 

 (Fig. 46). A few 

 days after emerging, 

 the females lay mi- 

 nute, flattened, disk- 

 like, oval, nearly 

 transparent, smooth 

 eggs either singly or 

 in small overlapping 

 clusters on the leaves 

 Knight photo (X 4). ^Yig. 47). In a week 

 or ten days a little black-headed, greenish caterpillar hatches, 

 makes a silken tube open at both ends and sallies forth to feed 



Fig. 45. — 

 Opening apple 

 bud infested with 

 a hud-moth cat- 

 erpillar, showing 

 the brownish 

 particles thrown 

 out at the tip by 

 the larva. 



Fig. 46. — Bud-moth. 



