254 FAMILY VI. ACRIDIDJE. THE LOCUSTS. 



Toronto and Sarnia, though Caulfield ( 1SSS) states that it "occurs 

 generally" throughout that province. Scudder 1 11)00) gives its 

 range as "U. S. and Canada east of Rocky Mts.," but it has not 

 been recorded from Canada west of Ontario, it being apparently 

 replaced in the western provinces by .1. ftscudoiiictann (Thos.) 

 and A. frifjida Scudd. In this country the main distribution, like 

 that of .ruiitJiojttcni. appears to be east of the Mississippi, as wher- 

 ever found west of that stream it appears to be scarce, it having 

 been so recorded in the Iowa, Minnesota and Nebraska lists. 



Throughout its range the sulphur-winged locust appears to 

 winter in the nymph stage and to become mature and largely 

 disappear before .mntlioptcr<t, hatched from the eggs in spring, 

 becomes abundant. It is said by Morse (1897, 51) to occur 

 throughout New England, "being found nearly everywhere in dry 

 pastures in spring and early summer, its rattling stridulation be- 

 ing one of the constant features of a ramble in such places at that 

 season. Its flight, particularly that of the male, is less extended 

 than that of .fantJiojttera, being often limited to a few feet, but 

 sometimes continued for three or four rods. Its course is often 

 circling with an abrupt curve and a sudden drop into the grass 

 and bushes at the end." 



II. CHORTOPHAGA Saussure, 1884, 43, 72. (Gr., "herb" -f "to eat. 11 ) 



Medium sized locusts, having the body rather slim, compressed, 

 punctate or finely wrinkled ; vertex horizontal, triangular, its apex 

 truncate, sides not prominent, median carina wanting; foveohr* 

 very shallow, elongate, triangular; frontal costa prominent, rather 

 narrow, punctate, silicate below the ocellus, the margins of upper 

 fourth slightly converging to meet those of vertex; antenna? no 

 longer than head and pronotum together, the joints short, some- 

 what flattened; pronotum with disk roof-shaped, its front margin 

 bluntly angulate, projected slightly forward on the occiput, hind 

 margin acute-angled; median carina not prominent, straight and 

 but faintly notched slightly before the middle by the principal 

 sulcus; lateral carinse visible only on the metazona, rounded and 

 indistinct, female, plainly visible, male; lateral lobes of pronotum 

 as in Ar i>h ia. the lower posterior angle less rounded; tegmina nar- 

 row, surpassing the abdomen, apical half membranous, the inter- 

 calary vein running midway between median and ulnar veins; 

 wings pellucid, outwardly tinged with fuscous, basally faintly so 

 with yellowish, the veins but slightly swollen; hind femora of me- 

 dium size, surpassing the abdomen, male, slightly shorter, female; 

 ovipositor as in Arjtlt'm. 



