SUBFAMILY III. LOCUSTIN.E. 399 



In length and form of tegmina the members of this group are 

 intermediate between the previous groups and the long-winged 

 species of Melanoplus. Their feebly developed furcula, however, 

 show that they are more closely related to the short-winged spe- 

 cies previously treated than to the long-winged ones. 



T 



Fig. 139. Lateral views of apical portions of male abdomens of Melanoplus. 

 a, fasciatns; b. querneus', c, nigrcsccns', d, huroni. X 4- (After Pettit, R. & 

 H. and Scudder.) 



KEY TO EASTERN SPECIES OF THE FASCIATUS GROUP. 



a. Lower face of hind femora not deep red; interspace between meso- 

 sternal lobes of male distinctly longer than broad; subgenital plate 

 of male not or very feebly tuberculate at apex (PI. Ill, g.) 

 &. Smaller, length of body, male, less than 20 mm., of female, not 

 more than 23 mm. ; tegmina covering two-thirds or more of ab- 

 domen; prozona of male but little if any longer than metazona. 



186. FASCIATUS. 



6b. Larger, length of body, male, 21 or more, of female, 24 or more, 

 mm.; tegmina rarely (querneus) covering more than half the 

 abdomen; prozona of male usually one-fourth or more longer 

 than metazona, 



c. Apical margin of subgenital plate of male rounded, not or but 

 feebly elevated at middle; cerci of male, broad, flat, feebly 

 narrowed at middle, the apical third as wide or slightly wider 

 than base, the apex broadly rounded, not incurved (Fig. 

 139, 6) ; tegmina slightly longer than head and pronotum to- 

 gether; furcula wanting or scarcely evident. 187. QUERNEUS. 

 cc. Apical margin of subgenital plate distinctly raised or prolonged 

 at middle; cerci not as described in c, their apical third either 

 incurved truncate, or obliquely transverse; tegmina not 

 longer than head and pronotum together. 



d. Furcula of male distinct but small ; apical margin of sub- 

 genital plate feebly but obviously produced backward at 

 middle. 



e. Prozona not more than one-fourth longer than metazona; 

 apex of male cerci subtruncate with angles rounded 

 (Fig. 139, c) ; subgenital plate with a slight tubercle at 

 apex. 188. NIGRESCENS. 



ee. Prozona one-third or more longer than metazona; apex of 

 male cerci broadly rounded; subgenital plate without a 

 tubercle at apex (PL III, 7?,.) 189. WALSHII. 



dd. Furcula wanting, the last dorsal segment narrowly parted at 

 middle; apex of subgenital plate abruptly rounded and 

 rather strongly elevated, but not prolonged backward; api- 

 cal half of cerci expanded into an obliquely transverse oval 

 lobe. 190. PONDEROSUS. 



