84 INSECTS OF ECONOMIC IMPORTANCE 



stem; it passes the first winter in its burrow not 

 far from the ei^g- and Iw the second fall reaches 

 the root where it passes the winter, chani^es to a 

 pupa in the spring and the beetle emerges in June. 



Control — Cut off the wilted tips of the canes 

 some distance below the egg as they appear in June. 



The raspberry saw-fly ^^ (Monophadnus rubi) 

 Order — Hymenoptera 



A saw-fly, the larvae of which are at times quite 

 injurious to raspberries; it may feed also upon the 

 blackberry and dewberry ; the leaves are completely 

 devoured, the new canes may be injured and the 

 buds and young fruit sometimes suft'er. 



The adults appear the first half of May and de- 

 posit their eggs within the tissues of the leaves 

 from the undersides; in a \veek to ten days they 

 hatch; the full-grown larva is green in color with 

 the body covered with spine-bearing tubercles; 

 after feeding on leaves until nothing but veins are 

 left the larvae go into the ground two or three 

 inches below the surface and make cocoons in 

 which they spend the wnnter, changing to pupae in 

 the spring; there is only one brood annually. 



Control — The larvae may be brushed from the 

 plants to the ground where they will die ; the plants 

 may be sprayed with arsenate of lead, 2>4 pounds 

 to 50 gallons of water as soon as the larvae are seen. 



The striped tree-cricket ^^ (Oecanfhus nigri- 



cornis) 



Order — Orthoptera 



This insect lays its eggs in the canes in the fall 

 where they remain all winter; the eggs are laid in 



20 Lowe— N. Y. State Expt. Stat., Bull. 150. 



21 Parrott and Fulton— N. Y. State Expt. Stat., Bull. 388. 



