ORTHOPTERA 



259 



Fig. 289. — Hippiscus apiciilatus. (From Lugger.) 



Subfamily TRUXALIN^ 



The Slant-faced Locusts 



Fig. 2go.^Chloealtis conspersa, 

 male. (From Lugger.) 



In this subfamily, as in the preceding one, the prostemum is 

 unarmed but the head is of a different form. In the TruxaHnae, 



the v^ertex and the front meet on an 

 acute angle. In some species this 

 angle is a sharp one, the shape of 

 the head being similar to that of 

 Leptysnia (Fig. 285). In other 

 species, however, the front is less 

 receding ; this is the case in the fol- 

 lowing species. 



The sprinkled locust, Chlo'ealtis 

 conspersa. — This is a veryabimdant 

 species in the northern United 

 States and Canada east of 

 the Great Plains. It is 

 brown, with the sides of the 

 pronotum and the first two 

 or three abdominal seg- 

 ments shining black in the 

 male; and with the body 

 and tegmina of the female 

 sprinkled or mottled with 

 darker brown. The teg- 

 mina and hind wings are a 



little shorter than the abdomen in the male (Fig. 290), and much 

 shorter in the female (Fig. 291). The males measure 15-20 mm. in 

 length; the females, 20-28 mm. 



Fig. 2gi .—Chloealtis conspersa, female. (From 



Lugger.) 



Subfamily ACRYDIIN^ 



The Pigmy Locusts 



The Acry^diinae includes small locusts of very unusual form. 

 They differ so much from other locustids that some students of the 



