SUBFAMILY I. TRYXALIISLE. 225 



or longer than head and pronotum together, feebly if at all 

 flattened, not acuminate at apex. 95. PELIDX^. 



bb. Prozona longer than metazona; antennae shorter than head and 

 pronotum together, strongly flattened on basal half, their apical 

 fourth distinctly acuminate. 



c. Tegmina distinctly surpassing the tips of hind femora, rarely 



maculate along the discoidal area; pronotal lateral carinaa 



entire. 96. OLIVACEA. 



cc. Tegmina just reaching, female, or feebly surpassing, male, the 



tips of hind femora, and with numerous quadrate fuscous 



spots along the discoidal area; lateral carinaa usually widely 



interrupted on the prozona. 97. HALOPHILA. 



aa. Lateral carinse of pronotum but slightly more widely separated at 



hind margin than at front one; vertex of female with apex blunt, 



rounded, of male, rectangular (Fig. 84, i, /) ; foveolse indistinct; teg- 



mina rarely exceeding the abdomen; prozona longer than metazona. 



98. SPECIOSA. 



95. ORPHULELLA PELIDNA (Burmeister), 1838, 650. Spotted-winged Locust. 



Slender, compressed, the male distinctly the smaller. Head and disk 

 of pronotum either brown or green; a broad reddish-brown or black band 

 behind the eye reaches back to hind margin of pronotum, this limited 

 above by the whitish lateral carinse; sides of pronotum below the band 

 brownish; metazona with an elongate triangular black spot each side; 

 tegmina either brown or largely green, usually with a median row of 

 equidistant subquadrate black spots, and often a few black spots below 

 the median ones; abdomen reddish-brown, the sides spotted with black; 

 hind femora reddish-brown with traces of fuscous cross-bars; hind tibiae 

 pale brown, annulate with whitish near base. Vertex with margin dis- 

 tinctly raised above the disk, its central depression removed from apex 

 one-third to one-fourth the width of vertex; antennae but little depressed, 

 slightly longer than head and pronotum, the middle joints three to four 

 times as long as wide. Hind femora of male extending 2 3 mm. beyond 

 end of abdomen, slightly exceeded by the tegmina; hind femora and teg- 

 mina of female slightly surpassing the tip of abdomen. Other structural 

 characters as given in key. Length of body, $, 14.5 21, 9, 17 24; of 

 antennae, $ , 57.5, 9, 5.57; of tegmina, $, 1317, 9, 1520; of hind 

 femora, $, 912, 9, 1114 mm. (Fig. 85.) 



Although this small spotted locust is said to occur in abun- 

 dance in the United States east of the Rocky Mountains, it is 

 seldom met with in Indiana. I have taken it but twice within 

 the State, viz., July 21, 1897, when it was found in abundance 

 about the margins of a small lake in one of the valleys among 

 the sand dunes near Millers, Lake Co., and July 10, 1912, in some 

 low meadows near Bass Lake, Starke Co. When flushed it uses 

 both wings and legs, and when close pressed often burrows into 

 the fallen grass in an attempt to escape detection. Of 22 sped- 



