80S 



guide! to CALIFORNIA INSECTS. 



Locustidas: similar, but antennae long. Gryllidae: feet three-jointed. 

 Blattidas: body flattened. Forficulidae: with forceps at end of body. 

 Phasmidae. Mantidae: front legs greatly enlarged. 



ACRIDID/E. 



The migratory members of this family have been known as locusts but the 

 more common name of these insects when not migrating is grass hoppers. 

 Locusts probably rank first of allinsect pests. 



Piguie 315. Diagram showing the principle veln.s in the wing of Acrididse. 



SYNOPSIS OF GENERA. 

 Melanoplus: prothorax spined beneath and metasternal lobes as broad as 

 long. Dracotettix: apical spurs on both sides of hind tibiae. Parapomala, 

 Leptysma and Arr.ilia: face very oblique, the first with hind tibiae expanded 



Figure .316. Structures used in the classification of grasshoppers. 



apically and the second with head as long as pronotum. Dactylotum: less 

 than nine spines on outer margin of hind tibiae. Bradynotus: wingless. 

 Poecilotettix: no median carina. CEdaleonotus: cerinse interrupted between 

 sulci. Hesperotettix: crest equal on prozona and metazona. /Coloplus: 

 pronotum narrowest in front of principal sulcus. 



Triberotropus: pronotal carinse evident, twice intersected, the princioal 

 sulcus distinct on sides. Aconia and Heliastes: crest deeply interrupted 

 between sulci, the latter with middle independent vein feeble or wanting. 



