FAMILY VI.-LOCUSTID^:. 



247 



nion, they are called "Western 

 Crickets." The>' sometimes become 

 very destructive to crops. The in- 

 sect deposits in August and early 

 September from 50 to 75 eggs, 

 which have a cylindrical, long-oval 

 shape, and have their pearly white 

 surface minutel}- pitted ; they hatch 

 late ill spring. 



Fig. 162. — Anabrus purpur- 

 ascens, female. Original. 



Fig. 161. — Anabrus purpiirasceas, male. 

 Original. 



Both sexes are illustrated (Figs. 161 and 162) in natural 



size. 



The sub-family Gryllacrinas is not represented in the 

 fauna of Minnesota, and the sub-family Stenopelmatinae by 

 only one tribe, the Rhaphidophorini, which contains a 

 number of genera belonging to the group of Ceuthophili. 

 a. Palpi long. Hind tibiae usually considerably longer than 

 the hind femora. Third hind tarsal joint only half or 



less than half as long as the second Ceuthophilus. 



aa. Palpi short. Hind tibiae shorter, or at most but little 

 longer than the hind femora. Third hind tarsal 

 joint hardly shorter than the second Udeopsylla. 



GENUS Ceuthophilus Scudder (1862). 



Wingless, medium or large, head large, oval, bent down- 

 wards and backwards between the front legs; vertex not 

 tuberculate; last joint of palpi longer than the third, and 



