318 IXJT'RIOrS INSECTS, WITH TREATMENT 



False Army-worm {Calocampa nupera). — Green to blackish 

 caterpillars devouring the leaves and buds. 



Treatment. — Reflow for from twenty-four to thirty-six hours 

 soon after the middle of May. It may be necessary to reflow 

 a second time. Destroy all caterpillars washed ashore while the 

 water is on. 



In dry bogs, spray early in May with arsenate of lead. 

 Cucumber. Pickle-worm (Diaphania nitidalis). — Larva, about an 

 inch long, yellowish white, tinged with green, boring into cucum- 

 bers; two broods. 



Preventives. — Clean farming, fall plowing, and rotation of crops. 



Remedies. — Kill the caterpillars before they enter the fruit 

 by spraying with arsenate of lead about the time the buds begin 

 to form, and repeat in two weeks. 

 Stem-borer. — See under Squash (p. 331), where it is described as 



root-borer. 

 Melon-worm. — See under Melon, p. 322. 



Spotted Cucumber-beetle {Diabrotica 12-punctata). — Beetle, 

 yellowish and black spotted, about one-fourth inch long, feeding 

 upon the leaves and fruit. Sometimes attacks fruit-trees, and the 

 larva may injure roots of corn. 



Treatment. — Same as for Striped Cucumber-beetle, below. 

 Striped Cucumber-beetle (Diabrotica vittata) . — Beetle, one-fourth 

 inch long, yellow with black stripes, feeding on leaves. Larva one- 

 eighth inch long and size of a pin, feeding on roots; two broods. 



Preventive. — Cheap boxes covered with thin muslin or screens 

 of mosquito-netting, placed over young plants. 



Remedies. — Arsenicals in flour. Arsenate of lead. Ashes, 

 lime, plaster, or fine road dust sprinkled on the plants every two 

 or three days when they are wet. Air-slaked lime. Plaster and 

 kerosene. Tobacco powder, applied liberally. Apply remedies 

 when dew is on, and see that it strikes the under side of the leaves. 

 Currant. Borer {Scsia tipidiformis). — A whitish larva, boring in 

 the canes of currants, and sometimes of gooseberries. The larva 

 remains in the cane over winter. 



Treatment. — In fall and early spring cut and burn all affected 

 canes. These canes are distinguished before cutting by lack 

 of vigor and by limberness. 



