INJURIOUS INSECTS. 89 



bores a round hole in the plum, instead of making a cres- 

 cent mark like the curculio. 



Bemedy. — Same as for curculio. 

 Scale (Lecanium sp.).— A large circular scale occurring 

 upon plum (and perhaps other) trees in New York. 



Bemedy. — Thorough spraying with kerosene emulsion 

 (2) (1 part to 5 of water) in the winter. More dilute 

 emulsion in midsummer when the young insects are on the 

 leaves and young shoots. 

 Slug. — See under Cherry. 

 Twig-Pruner. — See under Apple. 

 Poplar. Cottonwood Leaf-Beetle (Lina scripta, Riley). — 

 A striped beetle feeding on the leaves and shoots of poplars 

 and willows. 

 Bemedy. — Arsenites. 

 WiLLOw-WoRM. — See under Willow. 

 Potato. Colorado Potato-Beetle {Doryphora decemlineata, 

 Say).— Beetle and larva feed upon the leaves. 



Be7nedies.— Arsenites, either dry or in spray, about a 

 third stronger than for fruits. Handpicking the beetle. 

 Mole-Cricket (Gryllotolpa borealis, Burm.). — Mature in- 

 sect curiously formed, whitish, feeding on tubers in low 

 and mucky ground. 



Preventive. — Plant potatoes on upland. 

 Stalk- Weevil (Trichobaris trinotata, Say).— A grub bor- 

 ing in the stalk of the potato near or just below the ground. 

 Serious at the west and in some places eastward. 

 Bemedy. — Burn all infested vines. 

 Privet or Prim. Privet Web-Worm {Margaronia quadristig- 

 malis, Gn.).— Small larva feeding in webs on the young 

 shoots of the privet, appearing early in the season ; two to 

 four broods. 



Bemedies. — Trim the hedge as soon as the worms appear 

 and burn the trimmings. Attract the moths at night by 

 lights. Probably the arsenites will prove useful. 

 Quince. Round-headed Borers. — See under Apple. 

 Slug. — See under Cherry. 



