44 horticulturist's rule-book. 



Leaf-Roller (Phoxopteris comptana, Frol.)- — Larva, less 

 than one-half inch long, feeding on the leaves, and rolling 

 them up in threads of silk ; two broods. 



Bemedies. — In first stage of attack apply hellebore or 

 arsenites if the attack is very early, or if it is after the 

 fruit is off. Burn the leaf -cases. 

 RooT-BoRER (^Anarsia lineatella, Zeller). — Larva, about one- 

 half inch long, whitish, boring into the crown of the plant 

 late in the season and remaining in it over winter. 

 Bemedy. — Burn the plant. 

 RooT-LousE (Aphis Forbesii, Weed). — From July to the 

 close of the season the lice appear in great numbers on 

 the crowns and in the roots of the plants. 



Bemedies. — Rotation in planting. Disinfect plants com- 

 ing from infested patches by dipping the crowns and roots 

 in kerosene emulsion. 

 Saw-Fly {Emphytus maciilatus, Norton). — Larva, nearly 

 three-fourths inch long, greenish, feeding upon the leaves ; 

 two broods. 



Bemedies. — Hellebore. Arsenites for second brood. 

 Weevil (AntJionomus signatus, Say). — Beetle, one-tenth 

 inch long, reddish, feeding on flower-buds, particularly those 

 of the polleniferous varieties. 



Preventive. — Covering the plants with newspapers or 

 cloth is said to be the only effective means of checking the 

 pest. 



Bemedies. — Plaster and crude carbolic acid mixture. 

 Sumac. Apple-Tree Borer. — See under Apple. 

 Jumping Sumac-Beetle (Blepharida Bhois, Forst.). — Larva, 

 half -inch long, dull-greenish yellow, feeding on leaves ; two 

 broods. 



Bemedy. — Arsenites. 

 Sweet-Potato, Saw-Fly (Schizocerus ebenus, Norton). — 

 Small larva about one-fourth inch long, working upon the 

 leaves. The fly is about the size of a house-fly. 



Bemedies. — Hellebore and pyrethrum are to be recom- 

 mended ; also arsenites. 



