26 HORTICULTURIST'S RULE-BOOK. 



Remedies. Hand-picking at the first appearance of the 

 caterpillars. Destroy infested fruits. 

 MELON-WORM. See under MELON. 



SPOTTED CUCUMBER-BEETLE (Diabrotica 22-punctata, Oliv.). 

 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. 



Remedies. Same as for STRIPED CUCUMBER-BEETLE, 

 below. 



STRIPED CUCUMBER-BEETLE (Diabrotica vittata, Fabr.). 

 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. Arsenites in flour. Ashes, lime, plaster or 

 fine road-dust sprinkled on the plants every two or three 

 days when they are wet. Air-slacked lime. Plaster and 

 kerosene. Tobacco powder, applied liberally. Apply rem- 

 edies when dew is on, and see that it strikes the under 

 side of the leaves. 



Currant. BORER (Sesia tipuliformis, Linn.). A whitish 

 larva, boring in the canes of currants, and sometimes of 

 gooseberries. The larva remains in the cane over winter. 



Remedy, In fall and early spring cut and burn all 

 affected canes. These canes are distinguished before cut- 

 ting by lack of vigor, and by limberness. 

 CURRANT-WORM, or CURRANT and GOOSEBERRY SAW-FLY 

 (Nematus ventricosus, King). Larva, about three-fourths 

 inch long, yellow green, feeding upon the leaves of red 

 and white varieties ; two to four broods. 



Remedies. White hellebore, applied early. Arsenites 

 for the early brood. Treatment should begin whilst the 

 larvas are on the lowermost leaves of the bushes. Before 

 the leaves are fully grown, the holes made by the worms 

 may be seen. The second brood is best destroyed by kill- 

 ing the first "brood. 



