104 AN INTRODUCTION TO ENTOMOLOGY. 



The Green-striped Locust, ChortdpJiaga viridifascidta. — This is a 

 very common species from Maine to Florida. There are two well- 

 marked varieties. In one, the typical form, the head, thorax, and 

 femora are green, and there is a broad green stripe on each wing- 

 cover, extending from the horn to beyond the middle: this often in- 

 cludes two dusky spots on the edge. The second variety differs so 

 much in appearance, that it was described by Harris as a distinct 

 species under the specific name infuscdta. In this form the ground 

 color is dusky brown. Intergrades occur, in which the head and 

 thorax are of a reddish velvety brown. Length of male to end of 

 abdomen 20 mm. (.8 inch), to tip of wings 25 mm. (1 inch) ; length of 

 female to tip of wings about 30 mm. (1.4 inch). 



The Barren-ground Locust, Sphardgcmon aqudlc. — This locust 

 occurs throughout North America east of the Rocky Mountains. 

 In the Northern United States it is found during the months of 

 July and August on dry, barren hills, and on sandy plains. It is 

 ash-gray in color, mottled with dusky brown and white ; the face is 

 whitish ; the wing-covers are marked with dusky bands, and are 

 semi-transparent at tip ; the wings are traversed by a dark band just 

 beyond the yellow disk. Length to tip of wings, male, 30 mm. 

 (1.2 inch) ; female, 35 mm. (1.4 inch). 



The Carolina Locust, Dissosta-ia Carolina. — Notwithstanding its 

 specific name, this species is common throughout the United States 

 and Canada. At the North it is the largest of our common locusts, 

 but it is greatly surpassed in size by species found in the South. It 

 abounds in the highways and in barren places. It takes flight 

 readily, and the males stridulate while in the air. The color of this 

 insect varies greatly, simulating that of the soil upon which it is found. 

 It is usually of a pale yellowish or reddish brown, with small dusky 

 spots. The wings are black, with a broad, yellow margin, which is 

 covered with dusky spots at the tip. Length to tip of wings 

 35-45 mm. (1.4-1.8 inch). 



Hippiscus discoldeiis. — This is the largest of our common repre- 

 sentatives of the CEdipodinse. It is a Southern species. I have, 

 however, specimens from as far north as New Jersey. In color it is 

 pale reddish or yellowish brown, with dark-brown spots ; the wing- 

 covers marked with strongly contrasting brown or blackish and white 

 spots or bands, the anal area reddish. The disk of the wings is red. 

 The body, especially of the female, is heavy, the thorax being both 

 broad and deep. Length to tip of wings, male 40mm. (1.6 inch); 

 female, 55 mm. (2.2 inch). 



