346 



PESTS OF ORCHARD AND SMALL FRUITS 



fruit in midsummer. When full grown, the maggot leaves the fruit 

 and enters the ground, its skin contracting and hardening to form a 

 puparium. It remains there until the following season. 



Where trees are badly infested, chickens may be made use of to 



scratch up and eat the puparia. 

 No measures in the way of 

 spraying are available. 



The Pear Midge 



(Contarinia pyrivora Riley) 



Early in the season the 



young fruit of pears becomes 



stunted and distorted. If a 

 Fig. 545. — Section through young pear, 

 showing work and larva of the Pear 

 Midge. Original. 



fruit is cut open, tiny maggots wiU be 



found within, working especially in and 



around the core. 

 Eggs are laid when the buds first open 



by an exceedingly small midge. After 



completing its growth the maggot leaves 



the fruit and enters the ground, where it remains until the follow- 



ing spring. There is one brood 

 annually. 



No satisfactory means of con- 

 trol has been devised. 



The Currant Fruit-fly 

 (Epochra canadensis Loew.) 

 In early summer a small, white 

 maggot may be found working in 

 the berries of currants or goose- 

 berries. The parent insect is a 

 yellowish, two-winged fly with 

 barred wings. Eggs are laid 



Fig. 546. — Larvae of the 

 Pear Midge, enlarged and 

 natural size. Original. 



Fig. 547. — Work of the Currant Fruit- 

 fly. Original. 



