318 INJURIOUS 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 (Sesia tipuliformis] . 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. 



