[21] 



COLLECTING AND PRESERVING INSECTS RILEY. 



"Order OBTHOPTERA (dpOuq, straight; nrepov, wing), or Straight- 

 winged Insects. Characterized by having the front wings (called 



FIG. 28. A Locust (Acrideumamericanum). 



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- 



1U2' 



in the Other Orders FIG. 29. A Tree-cricket (Ocharis saltator). a, female; 



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. 30. The Croton Bug or German Cockroach (Phyllodromia germanica.) a, first stage : b, second 

 stage ; e, third stage ; rf, fourth stage ; e, adult ; /, adult female with egg-case ; </, egg-case enlarged ; 

 h, adult with wings spread all natural size except g. 



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

 aquatic Orthoptera. Some are omnivorous, others carnivorous, but 



