CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 265 



Control. — Cleaning up and destruction of all fallen fruits; covering 

 trees with netting; using a poison bait spray (Berlese and Mally). 



Currant Fruit Fly [Epochra canadensis Loew.)- — (Consult Bull. 

 264, Maine Agr. Expt. St.) A common pest on currants and 

 gooseberries in Canada and the Northern States, and confined to the 

 Canadian, Transition and Upper Austral zones. 



Adult. — Pale yellowish, slightly smaller and more delicate than the 

 house fly; eyes green, legs yellow, wings cross-banded; active and 

 restless. May and June. Mating period 2)2> days; preoviposition 

 period 6-10 days. One brood a year. 



Eggs. — Elongate, oval, whitish, },^^ inch long; placed under skin 

 of fruit by long ovipositor. Female may lay about 200 eggs. Hatch 

 in 4-7 days. 



Larva. — Burrows within the fruit, destroying seeds and kernel. 

 Infested berries show discolored spots, become deformed and usually 

 fall early. Matures in 3 weeks; J^ 

 inch long, white with black mouth- 

 parts. Leaves the fruit and enters 

 the ground to pupate. 



Pupa. — ^Puparium broadly oval 

 and straw colored, in the ground. 

 Hibernates. D uration lo-ii 

 months. 



Control— kWov^ poultry to run ^^''- ]^l-~^ ^^"\^l^ white-banded 



^ . -^ cherry fruit fly. Much enlarged. 



among the bushes to pick up fallen {After Caesar.) 



infested fruit; spray bushes with a 



sweetened poison of sodium arsenite and diluted molasses to kill adult 



flies at intervals of a week beginning early in May. A heroic but 



effectual method is to pick entire crop of fruit and destroy it before 



the maggots emerge. 



White-banded Cherry Fruit Fly {Rhagoletis cingulata Loew.). 

 Adult. — A small blackish fly, smaller than the House-fly, % inch 

 long, expanding % inch; pale yellow spot on hinder part of thorax 

 and a yellowish stripe along each side of thorax; head yellow, eyes 

 gold-green; legs yellow, abdomen crossed with 3 or 4 white bands. 

 Wings with four brown cross bands, and a black spot at tip. June 

 (Fig. 167). 



Eggs. — Egg-laying begins about 11 days after emergence of flies. 



