﻿150 EIGHTH ANNUAL REPORT 



The species of the genus Tettix also hibernate in the halfgrowrfc 

 and sometimes in the full grown condition, and are frequently sup- 

 posed to be the young of spretus. These insects are very active, and 

 [Fig. 47.] are at once distinguished by the small head, great breadth 

 across the middle of the pro-thorax which extends to a taper- 

 ing point to or beyond the tip of the abdomen ; by the front of 

 the breast forming a projection like a stock-cravat into which 

 to receive the lower part of the head, and by the short, rudi- 

 mentary, scale-like front wings. They fly with a buzzing 

 granulat- noise like a flesh-fly. Our most common species ( Tettix gran- 



ED GUOUSE 



Locust, lata ^cudder, Fig, 47,) may be called the Granulated Grouse- 

 locust. It is like the other species, very variable in color and orna- 

 mentation, the prevailing hue being dark-brown beneath and paler 

 above. A well marked variety has a small, pale spot on the rudimen- 

 tary front wings, and a larger conspicuous one on top of the hind 

 thighs. 



Even insects belonging to adiff'erent Order were not unfrequently 

 the cause of unnecessary alarm. In the Spring of 1875 the meadows 

 were reported as being destroyed around Champaign and Jackson- 

 ville, Illinois, by what was supposed to be the young of spretus ; but 

 specimens of these supposed locusts, sent me by Chapin & Simmons, 

 of the Jacksonville Journal proved to be little Jassoid leaf hoppers 

 allied to the common grape-leaf hopperf — insects belonging to a difi"er- 

 ent order (Hemiptera) to that which includes the locusts (Orthoptera.) 

 They were mAee^ grass-Jwppers.^\n the sense of hopping about among 

 the grass, but they were not the so-called grasshoppers (locusts) that 

 were proving such a plague in parts of Kansas and Missouri at the 

 time. 



INJURIES OF NATIVE SPECIES IN 1875. 



The native species of the genus to which the Rocky Mountain 

 Locust belongs were unusually common and destructive toward Au- 

 tumn in most parts of the State, except in the region ravaged by that 

 species in the Spring, The Two-striped (Rep, 7, Fig. 34), the Differen- 

 tial (^J^■(i', Fig. 33), the Red-legged,, («'5»W, Fig, 26), and the Atlantic 

 species were abundant everywhere, and the two latter were more 

 particularly injurious. These were often supposed to be the genuine 

 spretus^ and the reports of this last in Jefferson, Franklin and Moni- 

 teau counties in the Monthly Report of the Department of Agricul- 

 ture for November and December, undoubtedly refer to them, and 

 are a sample of the reliability of much of the entomological informa- 

 tion that comes through that channel. They were troublesome not 

 only in the Mississippi Yalley, but in the East, for I know that they 



