TiiK (^iiKHKY Fruit-Fly. 



33 



JPossiBLE Natukal Foud-Plants of the Insect. 

 If this cherry fruit-fly turns out to be the well-known apple-mag- 

 got fly, then, of course, its native or original food-plant is the haw- 

 thorn. But if this new cherry pest is Bhagoletis cingulata, or some 

 insect other than tlie apple maggot, then we must look to the native 

 species of wild cherries, or possibly wild plums, and also to the species 

 of Berheris and Lonicera for its natural food-plants. The xatter 

 plants are mentioned as possible native food-plants of the Ameri- 

 can cherry fruit-fly because the European clierry fruit-fly is known 

 to breed in several species of Berheris and Lonicera. 



The Story of Its Life. 



Having flrst made the acquaintance of this new cherry pest only 

 about two months ago, we have had, therefore, no opportunity to 

 follow it through its yearly life-cycle. Hence we are unable to tell 

 the story of its life in detail. 



Hoto it spends the tvinter. — The insect doubtless spends the win- 

 ter in the soil, usually not more than an inch below the surface, in 

 the condition shown, natural size and much enlarged in ligure 15. 

 It is a dark brown, 

 lifeless-looking ob- 

 ject known as aj'j'w- 

 parium. Within 

 this hard, stiflP, 

 brown shell which 

 is really the con- 

 tracted and har- 

 dened skin of the 

 maggot, the insect 

 changes from a 

 maggot to a j^^jxi. 

 Whether the pupa 

 is formed before 



spring, we cannot 



15. — Dorsal and ventral vieios of the puparia of the cherry 

 fruit- fly. Natural size and enlarged. 

 yet say. 



Emergence in the spring. — During the spring months the trans- 

 formation from a pupa to the adult insect — the ]>retty little fly shown 



