THE INSECT WORLD. 



277 



Fig 



the body striped with narrow black or reddish-brown hnes, ex- 

 cept at the sides, where it is gray or yellowish. Near the pos- 

 terior extremity is a rather prominent, humped segment entirely 

 red in color. When full grown they go underground, and from 

 them come, in the spring 

 following, moths gray in 

 color, mottled with brown, 

 but the front of the body 

 and a margin along the 

 anterior edge of the fore- 

 wings white or nearly so. 

 These are called Edema 

 albifrons. The body is 

 rather cylindrical, heavy, 

 extending somewhat be- 

 yond the hind wings 

 and obtusely terminated. 



Feeding exposed as these insects do, they are readily destroyed 

 by the arsenites. 



One other caterpillar sometimes occurs in swarms on a great 

 variety of plants, including some fruit-trees, and this is known 

 as the "red-humped prominent." It is yellowish brown in 

 color, pale along the sides and striped with slender black lines. 

 The fourth segment is humped and of a red color like that of the 



Fig. 302. 



Edema albifrons and its larva. 



CEdemasia concinna and its larva, the " red-humped prominent 



head. There are a number of short spinous processes along the 

 back, and some which are larger and more prominent on a hinder 

 segment. The moth that emerges from this larva is the CEdem- 

 asia co7icinna, and is of a light-brown color, the wings expand- 

 ing a little more than an inch, the anterior pair dark brown along 

 the inner margin and more or less gray tinged before. The 



