264 FAMILY VI. ACRIDIDJE. THE LOCUSTS. 



oo. Metazona and prozona subequal in length, the former with hind mar- 

 gin right-angled or obtuse-angled (Fig. 9G, a); vertex with front 

 half of disk not prolonged, narrowing rapidly; ulnar area of teg- 

 mina distinctly spotted; wings, (except rarely in Jialdemanii) yel- 

 low or orange-red at base. 



Fig. 96. Side views of head and pronotum. a, of Hihf'iscus rugosiis; b, of H. ap'cn- 

 latus; c, of Spharagcmoii belli; d, of Scirtctica picta. (After Morse and Walden.) 



b. Frontal costa strongly sulcate below the ocellus, distinctly nar- 

 rowed between or above the antenna?; opposite apical spurs of 

 hind tibia? subequal in length. 



c. Inner face of hind femora banded with black, blue at base; tu-- 

 bercles on disk of metazona rounded or oblong, not forming 

 ridges parallel to hind margin. 114. PHCEXICOPTERUS. 



cc. Inner face of hind femora uniform yellowish; tubercles on disk 

 of metazona more or less united to form oblique ridges paral- 

 lel to hind margin. 115. HALDEMAKII. 

 bb. Frontal costa but feebly sulcate below the ocellus, not narrowed 

 above the antenna?; opposite apical spurs of hind tibia? very un- 

 equal in length. 116. RUGOSUS. 



113. HIPPISCUS APTCVLATUS (Harris), 1835, 576. Coral-winged Locust. 



Very large, robust, the females much the more so. General color ash- 

 brown, darker above, the cheeks paler; antenna? yellowish at base, the api- 

 cal two-thirds gradually darkening to fuscous. Pronotum with a short, 

 dark brown, lengthwise bar on middle of lateral lobes, below which the 

 lobe is usually paler than above. Apical mird of tegmina blotched with 

 fuscous and black, the humeral angle light brown, the discoidal and ulnar 

 areas usually almost immaculate; basal portion of wings bright coral-red 

 (rarely yellow), this bordered without by a curved fuscous band which 

 reaches anal angle and sends a broad submarginal ray along the front or 

 costal margin nearly to base. Inner face of hind femora with basal half 

 black (Prussian blue in life), apical half yellow with a median black bar; 

 outer face with indistinct bars of black; hind tibiae dull yellow, sometimes 

 with an orange tinge. Vertex prominent, its sides low, distinct, not uni- 

 ting in front but continuous with those of frontal costa; median carina 

 reaching center of disk; foveola? triangular, very small. Frontal costa al- 

 most flat, feebly sulcate below the ocellus, the upper third slightly nar- 

 rowed. Antenna? short, equalling length of head and pronotum, the joints 

 a little flattened. Pronotum with disk almost flat, but little wrinkled, 

 granulate and bearing a few small rounded black tubercles; median carina 

 low, distinct, cut much in front of middle by principal sulcus; lateral ca- 

 rina? distinct only on metazona. Hind femora very broad, the upper and 

 lower carina? prominent, arcuate. Length of body, $, 25 30, 9, 36 44; 

 of antenna?, $, 11 13, 9, 12 14; of pronotum, $,8, 9, 11; of tegmina, 

 $, 2431, 9, 3237; of hind femora, $, 1518, 9, 1923 mm. (Fig. 97.) 



