FAMILY VI.— LOCUSTID^. 221 



Fig. 14'4,.—Scudderia pistillata, Fig. 145. — Scudderia pistillata, 



male. Natural size. Original. female. Natural size. Original. 



supra-anal process notched at the apex, with rounded lobes; 

 sub-anal process extending a little beyond the upper process. 



Measurements. — Male: Length of bod\^ 16-20 mm.; 

 wing-covers, 29-31 mm.; posterior femora, 21-23 mm. Fe- 

 male: Length of body, 18-20 mm. ; wing-covers, 27-30 mm. ; 

 posterior femora, 21-23 mm. 



Both sexes are illustrated in Figs. 144 and 145. 



GENUS Amblycorypha St41. (1873). 

 Head with the vertex flat; eyes elliptical or oblong oval; 

 antennae thread-like, first joint large and thick, second joint 

 but slightly smaller, thind joint slender. Wing-covers broad 

 and rounded at the tip. Male with the supra-anal plate 

 truncate ; sub-anal plate short and broad at base, narrower 

 at apex, with a deep triangular notch, each tip with a short 

 blunt spine-like process. Female with a long, flat, curved 

 ovipositor, deeply serrated towards the end. 



Species in this genus can readily be recognized by the 

 broad, oblong and rounded wing-covers. 



At least two species are found in Minnesota, 

 a. Tegmina about 37 mm. in length; exceeding the tip of 



posterior femora oblongifolia. DeGeer. 



aa. Tegmina less than 30 mm. in length; sometimes reach- 

 ing but not exceeding the tip of posterior femora, 

 b. Greatest breadth of tegmina contained less than 

 three times in their length ; ovipositor strongly 



curved rotundholia Scudder. 



bb. Greatest breadth of tegmina contained from 3^ to 

 3^ times in their length ; ovipositor but moder- 

 ately curved... Uhleri Brunner. 



