33 



a lethargy, lasting two or tlirfO lionrs. rtiiriiit; which tlu' jirocess of cligestion 

 <-h;uiges the juioes of the body to varying shades of brown. After the process 

 of digestion has talien place, the larva again begins its worli devouring aphides. 



T.\cHix.\ Fly. 



(Fig. 9.) 

 These are parasitic in habit, feeding largely npo caterpillars, and 



perhaps, preferably, upon cutworms, Fre(iuently, wheu the latter are 

 numerous, a large percentage will be noticed with one or several small white 

 eggs, attached to the anterior segments, iu such a position that the larvie 

 cannot possibly reach or destroy them. These eggs hatch in a very short time 

 into little maggot-lilve creatures that at once bore thron.gh the skin of the 

 caterpillar and live withiu its bod.v, feeding upon the fatty masses and 

 nmseular tissue not absolutely necessary to life. "When the maggots are full- 

 grown, and the welfare of the unfortunate caterpillar no longer a matter of 

 importance to them, they feed on, regardless of consequences. The maggots, 

 sometimes without attempting to get out of their host, then change to small 

 barred-shaped pupa^. Occasionally the maggots leave their host and make their 

 way a little below ground to pupate. Some large caterpillars will attain their 

 full growth with as many as thirty or more of these maggots feeding inside 

 them. 



Tachina flies are generally rather large for their class, robust in appear- 

 .■mce, always bristly, and sometimes formidable looking from the array of 

 sliarji shiny points pro.iecting in every direction from their bodies. They are 

 among the most effective of nature's cheeks to caterpillars, especially cut- 

 worms. 



Cutworm Lion Br,.\CK Ground Wa.sp. 



(Calosoma calUUim) (Aminophila Imtuosa). 



(Fig. 10.) 

 c 



(Fig. 11.) 



(Fig. 12.) 



