246 Maine Agricultural Experiment Station. 1917. 



EXPLANATION OF FIGURES. 



Figure 13 A. Larva eating its way into a currant seed. The head 

 region is buried in the seed and the caudal part is protruding. 



B. Mature larva with its body arched in a circle in prep- 

 aration for a jump. The posterior spiracles are invaginated while the 

 pair of hooked mandibles are attached to a fold at the lower end of the 

 body. 



C. The curled body of the larva leans back as far as pos- 

 sible just previous to jumping. 



D. R, respiratory pore in peel of currant. E, exit hole 

 of larva. 



F. Larva embedded within three currant seeds. 



G. Mandibles of mature larva. 



H. Ovipositor of Epochra canadensis showing tactile 

 bristles. 



Figure 14 A. Gooseberry with one egg chamber. 



B. Gooseberry with two egg receptacles. 



C. Gooseberry with three egg punctures. 



D. Tunnel of recently hatched larva beneath the peel. 



E. External indication of decay of gooseberry infested 

 with a currant fruit fly larva. 



F. Internal indication of decay of gooseberry. The lar- 

 va has devoured some of the seeds and pulp. 



G. Mature larva boring out of a gooseberry. 



H. Exit hole after the larva has emerged from a goose- 

 berry. 



I. Gooseberry which has become dried and shriveled 

 after the larva issued. 



Figure 15 A. Two eggs deposited in a green currant which shows 

 premature ripening around the egg chambers. 



B. Green currant showing premature ripened area two 

 days after oviposition. 



C. Two egg punctures in a currant. 



D. and E. External indications of decay of infested cur- 

 rants. 



F. Mature larva issuing from a currant. 



G. Exit hole after larva emerged from a currant. 



H. Poisoned bait spray injury to one-half of a gooseberry 

 leaf. 



Figure 16 A. Currant fruit fly which died on a currant leaf due to 

 a fungus disease. 



B. Male and female sun-flower trypetids (Straussia longi- 

 pennis Wied.) which contracted the fungus from diseased currant fruit 

 flies. 



C. Spider which captured a currant fruit fly. 

 Figure 17, A to E. — Behavior of adults. 



F. — Currant fruit fly ovipositing in a currant. 



