132 



INSECTS INJURIOUS TO THE APPLE. 



of which are known to occur as parasites within the bodies of 

 the larvse. They have been bred by Mr. C. V. Riley, who 

 describes them in his fifth Missouri Report. One is a small 

 black fly, from one-fourth to one-half inch in length; its legs 

 are reddish, the hind pair having a broad white ring. It 

 is called the Ring-legged Pimpla, Pimpla annulipes Br., and 

 is represented, much magnified, in Fig. 139. The other 



species is about the 



FIG. 140. same size, but more 



slender, and of a 

 yellow or brownish- 

 yellow color. The 

 female is provided 

 with a long ovipos- 

 itor, as seen in 

 Fig. 140, where the 

 insect is shown 

 highly magnified. 

 The abdomen of the 

 male is represented 

 to the right of the 

 figure. This spe- 

 cies is known as 

 the Delicate Long- 

 sting, Macrocentrus 

 delicatus Cresson. 

 These useful insect 

 friends are not yet 

 sufficiently numer- 

 ous to check materially the increase of the codling moth, 

 and it is doubtful if they ever will be. When the codling 

 worm has left the fruit in which it has been feeding, and while 

 wandering about in search of a suitable spot in which to pass 

 its chrysalis stage, it is liable to be attacked by any of the 

 ground-beetles, Carabidde, both in their larval and their 

 perfect state, also by the larvae of soldier-beetles and other 



