ATTACKING THE FRUIT. 137 



and rounded at the other ; the head, thorax, and wing-cases 

 are black ; the abdomen is dull yellow. 



The perfect insect very much resembles the Hessian fly in 

 a[)pearance, except that its legs are not so long and slender. 

 The head, antennae, and thorax are black ; the abdomen 

 dusky, almost black, with a pale-yellow band at each of the 

 sutures; beneath it is yellow, with a dusky patch on the 

 middle of each segment; the tip of the abdomen, ovipositor, 

 and legs, are black. The wings are dull hyaline, tinged with 

 a smoky hue, and about one-fourth longer than the body. 



This insect has not thus far proved very destructive^ and 

 from its habits is scarcely likely to become so. 



No. 02.— The Apple Fly. 



Drosophila f 



This is a two-winged fly, an undetermined species of 

 Drosophila, very similar in its habits to the apple midge, 

 but it usually attacks the earlier varieties, showing a pref- 

 erence for such as are sweet. The larva (see a, Fig. 144) 



a 



generally enters th*e apple where it has been bored by the cod- 

 ling worm, or through the punctures made by the apple cur- 

 culio, and sometimes through the calyx when the apple is 

 quite sound. In August the fly (see Fig. 144, b) matures and 

 deposits eggs for another brood, and successive generations 

 follow until winter begins. The chrysalids may be found 

 during the winter in the bottoms of apple-barrels, and in this 

 inactive state they remain until the following season. Usually 



