[21] 



COLLECTING AND PRESERVING INSECTS RILEY. 



"Order Orthoptera {op06q^ straight; -n-repu'^^ wing), or Straiglit- 

 wingecl Insects. Characterized by having the front wings (called 



Fig. 28. — A Locust {Acrideuin americanum) . 



tegmina) straight and usually narrow, pergameneous or parchment-like, 

 thickly veined, and overlapping 

 at tips when closed; the hind 

 wings large and folding longi- 

 tudinally like a fan. Transfor- 

 mations incomplete. 



"The insects of this order 

 have a lengthened body and 

 very robust jaws, with a corre- 

 spondingly large head. The 

 legs are strong, and fashioned 

 either for grasping, running, 

 climbing, jumping, or burrow- 

 ing. As in the other orders, 

 where the transformations are 

 incomplete, the young differ little from the parent, except in the want 

 of wings; and in many instances even this difference does not exist, as 



Fig. 29. — A Tree-cricket (Ocliaris saltator). 

 b, male. 



a, female; 





^\ J -v^ 



/rm^.^-T,,.. 



Fig. 30.— The Croton Bug or German Cockroach (Phyllodromia germanica.) a, fir.st stage; &, second 

 stage ; c, thii-d stage ; d, fourth stage ; e, adult ; /, adult female with egg-case ; g, egg-case— enlarged ; 

 A, adult with wings spread — all natural size escept g. 



there are numerous species which never acquire wings. There are no 

 aquatic Orthoptera. Some are omnivorous, others carnivorous, but 



