- 8 



In about 5 days, the egg hatches and the worm enters a fruit 

 and commences to feed therein until the entire seeds and flesh are 

 consumed and nothing is left but a skin full of worm castings. 

 This procedure is repeated in as many berries as are necessary for 

 completion of larval development which may be most of the berries 

 in a cl us ter . 



The cherry fruitworm feeds in the berries but makes no obvious 

 webbing so that often premature coloring is the first sign the 

 grower notices of their presence. Each worm feeds in 2 or 3 ber- 

 ries before reaching maturity. They can, however, make up in num- 

 bers for their smaller size and appetites. In yery severe infesta- 

 tions, as many as 75 worms have emerged from a pint of berries and 

 2 or 3 dozen per pint is not uncommon in heavy infestations. The 

 cherry fruitworm is a bright orange-red color and is about 1/3 inch 

 long when mature. When through feeding, the worm has the habit of 

 boring into old pruning stubs or dried weed stalks near the bush 

 where it hibernates till spring when it pupates and transforms in- 

 to a small black moth with a wing expanse of about 3/8 of an inch. 



The cherry fruitworm moth's peak flight is during the same 

 period as that of the cranberry fruitworm moth--toward the end of 

 bloom and shortly thereafter, when there is an abundance of small 

 fruit on which to feed. Eggs are laid singly on berries and on 

 leaves near berry clusters. 



Control of the two fruitworms is obtained by two or three ap- 

 plications of mala th ion, carbaryl or Guthion at 7 to 10 day inter- 

 vals beginning toward the close of bloom. 



otes 



habi ts 



The worms 

 they become 

 bush (it 

 their heads 



Also troublesome from time to time are D a t a n a 

 feed in colonies of several dozen individuals and 

 large they strip the foliage from a branch or a small 

 seems, overnight). When disturbed, Datana worn.s raise 

 and anal segments in a characteristic alert pose. The full-grown 

 worm is about 2 inches long with a dark head and body, a yellowish 

 "neck" and longitudinal yellowish stripes on the body. 



Another worm with a colonial habit is the fall webworm. These 

 caterpillars spin a white web as they move about and completely en- 

 close their feeding area. The mature larva is about an inch long, 

 pale yellow with a smoky stripe down the back and a yellowish 

 stripe along the sides. The body is covered with white to reddish 

 hairs. 



