LOCUSTIDAE 51 



LOCUSTIDAE. 



So far as variety of forms is concerned, this family is better 

 represented in the Old World than in the New. Only six of the 

 fifteen recognized subfamilies are known to occur in the United 

 States, and only one other has been found anywhere else in 

 America. At the same time all the American subfamilies are 

 shared by the Old World. The six subfamilies found with us 

 may be distinguished by the following table. 



Subfamilies of Locustidae. 

 A J . Body generally winged ; tarsi more or less depressed. 



b l . Fore tibiae furnished with foramina near the base ; male 

 tegmina, when present, furnished with a tympanum. 



c 1 . First two joints of tarsi smooth laterally; hind tibiae 

 with an apical spine on each side. . Phaneropterinae. 

 c 2 . First two joints of tarsi longitudinally sulcate laterally ; 

 hind tibiae with an apical spine on outer side only or on 

 neither. 



d l . Fore tibiae without apical spines. 



e l . Fastigium of vertex short, crowded by the prom- 

 inent antennal scrobes ; pronotum crossed by two dis- 

 tinct transverse sulci. . . Pseudophyllinae. 

 e 2 . Fastigium of vertex extended and free from the not 

 prominent antennal scrobes ; pronotum without, or with 

 only one, transverse sulcus. . Conocephalinae. 

 d 2 . Fore tibiae with an apical spine on the outer side. 

 (Body generally subapterous) . . . Decticinae. 

 b 2 . Fore tibiae without foramina near the base ; male tegmina 

 without a tympanum. .... Gryllacrinae. 

 A 2 . Body apterous ; tarsi distinctly compressed. 



Stenopelmatinae . 



PHANEROPTERESTAE. 



Brunner, in his latest monograph of this subfamily, divides it 

 into forty-three groups. Only five of these are known to occur 

 in the United States, the first standing at a wide distance from 



