296 FAMILY VI. ACRIDIDJE. THE LOCUSTS. 



three fuscous bands, outer face plain yellowish-brown or gray. Hind tibiae 

 pinkish-red, paler at base. Vertex slightly longer than broad, its median 

 carina faint or wanting; foveolse small, indistinct; frontal costa slightly 

 narrowed and but feebly sulcate at point of union with vertex. Pronotum 

 with median carina very low; disk flat, except on prozona, where the sides 

 are moderately convex; metazona broad, its hind margin decidedly obtuse- 

 angled, the tip rounded; surface finely granulate-punctate, with a few 

 minute scattered tubercles. Wings one and three-fourths times as long as 

 broad. Length of body, $, 2023, $, 2832; of antennae, <j , 1112, $, 

 10.512; of pronotum, $,5, $, G.5; of tegmina, $, 27 28, $, 31.535; of 

 hind femora, & , 1113, $, 1516 mm. 



Tliis species has been taken in Indiana only on a long sand 

 and gravel bar along the north shore of the Ohio River, a half mile 

 below Yevay, Switzerland County, where it was common on Sep- 

 tember I'M. Tts flight along this gravelly bank was much less pro- 

 longed Ilian that of nmritiiiHi on the more extensive sand beach of 

 Lake Michigan. When approached it would rise straight upward 

 a few feet, and then move lazily and without noise eight to 15 feet, 

 and alight again, always on the bare sand or gravel. The gravel 

 bar was at the foot of a terrace 30 feet or more in height and a 

 quarter of a mile wide, the surface of which was cultivated. No 

 trace of citrhni was found on this area, though other locusts were 

 abundant. It is a somewhat larger and more bulky insect than 

 Indiana examples of T. iiKiritinnt , the male being nearly as large 

 as the female of the latter. In general appearance the two closely 

 resemble one another and are apt to be confounded when they oc- 

 cur together. 



In Florida citr'uta has been taken by me only at Ormond and 

 Dunedin, where a few specimens were found in December and 

 March along sandy roadsides and in old fields. It has, however, 

 been recorded from numerous localities between Jacksonville, 

 Pensacola and Key West by other collectors, and doubtless occurs 

 throughout the State, though scarce in the southern portion. The 

 general range of the species is southern, extending from eastern 

 Pennsylvania and Maryland, west and north to Manitoba and 

 Yernon, 15. (\, Minnesota and Colorado, and south and southwest 

 to Arkansas. Oklahoma, Texas and New Mexico. Morse (1007, 

 39) calls it: " A very widely distributed species, of common oc- 

 currence throughout the Southern States from the seashore to a 

 considerable elevation, frequenting, in company with Dissoxlrint 

 ca roli IKI. roadsides and other spots bare of vegetation. Its color- 

 ing varies greatly according to the tint of the soil of its habitat, 

 from dull white, through shades of yellowish- and reddish-brown 

 to a dull grav." In Virginia Fox (1917) found it "on the sandy 



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