M 



SNAPPING-BEETLES. 



pupse and adults are killed, at least many of ttiem are. But the 

 younger ones are not, and as they remain in the larval stage for 

 two or three years, the fall plowing should he repeated many 

 times. Professor Smith recommends the use of crimson clover,, 

 which should be sown soon after the lieetles liave laid their eggs, 

 and it should l)e harvested and plowed under so as to prevent 

 the development of the larvre. In our fruit gardens the wire- 

 worms can only he destroyed by constant attention. 



Soine species also feed upon Mowers and fruit, but the dam- 



Fijj- 55. — Wire \voriiis at work. After Brehm. 



age caused by them is slight. Pig. 55 shows a click-beetle with 

 a number of larvae at work, and Figs. 56, 57 and 58 show the 

 adults of some very injurious species found in Minnesota. 



A few members of this family have the pleasant habit of 

 eating the eggs of our destructive locusts, hence are decidedly 

 beneficial. The larva; of Cryptohypnus bicolor Esch., which has 

 this very commendable habit, is shown in Fig. 59. 



Fig. 59. — Cryptohpnas bicolor, Esch., larva. After Riley. 



