Cockroaches, Locusts, Grasshoppers, and Crickets 141 
sometimes wanting). The hind tibiae are normally red (sometimes yellow¬ 
ish), hence the name, although these red hind legs are common to many 
other locust species. The lesser migratory locust, M. atlanis (Fig. 168), 
is a species of about the same size and appearance which sometimes 
appears in great swarms and does much injury to crops. The largest 
species of the genus is M. difjerentialis (Fig. 169), over an inch and a half long, 
with brownish-yellow body, fore wings without spots, and hind wings clear. 
It is common in the Southwest, where, in company with M. bivittatus (Fig. 
170), nearly as large but readily distinguished by the pair of longitudinal 
Fig. 176. Fig. 177. Fig. 178. 
Fig. 176.—The short-winged green locust, Dichromorpha viridis, female. (After Lugger; 
natural size indicated by line.) 
Fig. 177.—The spotted-winged locust, Orphula pelidina. (After Lugger; natural size 
of male 16-19 mm., of female, 20-24 mm.) 
Fig. 178.—The Carolina locust, Dissosteira Carolina, female. (After Lugger; natural 
size indicated by line.) 
pale-yellowish stripes extending from the head across the thorax and along the 
folded wing-covers nearly to their tips, it often becomes sufficiently abundant 
to do serious injury. These two species are always to be found commonly 
in western Kansas, and bivittatus ranges far to the north, being one 
of Minnesota’s destructive species. 
Among the other genera of the subfamily Acridiinae Schistocerca is con¬ 
spicuous because of the large size and wide distribution of its species. The 
American locust, S. americana (Fig. 171), measures three inches from head 
to tips of tegmina, with reddish-brown body and a longitudinal yellowish 
strip extending along the head, thorax, and closed tegmina nearly to their 
