288 



FAMILY VI. ACRIDIDJE. THE LOCUSTS. 



I. PSINIDIA Stai, 1873, 117. 



Small, slender, compressed species, having the occiput rnucli 

 elevated ; vertex with disk short, broad behind, strongly concave, 

 its sides sharp, elevated, strongly converging and declivent; fron- 

 tal costa sulcate throughout, the upper half very narrow, lower one 

 feebly expanding; pronotum strongly constricted at middle, hind 

 margin acute-angled ; median carina sharp, straight and of equal 

 height throughout, cut by two notches in front of middle; lateral 

 carime rather distinct on metazona, ill defined on prozona ; lateral 

 lobes of pronotum deeper than long, front margin subvertical, 

 hind one slightly concave, lower one curved, its front half ascend- 

 ing; tegmina narrow, exceeding the abdomen by about one-fourth 

 their length, their basal half densely coriaceous, many of the cells 

 in front half of middle third, two to four times as long as wide; 

 hind femora reaching tip of abdomen, female, slightly exceeding it, 

 male; valves of ovipositor slender, distinctly exserted, their tips 

 acute, curved. One species of wide range occurs in the Eastern 

 States and Canada. 



124. PSINIDIA FENESTRALIS (Serville), 1838, 726. Long-horned Locust. 



General color varying widely, according to environment, from pale 

 clay-yellow to bright reddish-brown or even blackish. Face yellowish- 

 brown, cheeks grayish, occiput and disk of pronotum darker; a narrow 

 yellowish stripe extends back from eye onto disk of pronotum, the sides of 



latter with a fuscous bar near mid- 

 dle. Tegmina dull clay-yellow or 

 reddish-brown, the lower half of 

 sides with numerous small alter- 

 nating light and dark spots; upper 

 half unspotted. Wings with basal 

 third usually orange or vermilion 

 red, often yellow; middle third 

 with a broad curved black band 

 which reaches nearly to anal angle, 

 iront margin with a dusky bar reach- 

 ing nearly to base; apical third pel- 

 lucid. Hind femora reddish-brown, 

 with three ill-defined dark, oblique 

 bars on upper outer face; inner 

 face with alternating bands of 

 black and yellow. Hind tibiae greenish-yellow with a dark ring at each 

 end, and a broad fuscous one just above the middle, the apical halves of 

 spines black. Length of body, $, 15 IS, 9, 19 25; of antennae, $, 

 10.712.3, 9, 1012; of pronotum, $, 4.5, 9, 5.5; of tegmina, $, 1619, 

 9, 1825; of hind femora, <$ , 911.5, 9, 1112.5 mm. (Fig. 107.) 



Iii Indiana the long-horned locust has as yet been noted only 

 in Lake, Porter and Laporte counties, in the sandy area bordering 



Fig. 107. Male. X I -S- (After Lugger.) 



