338 



THE STUDY OF INSECTS. 



wings are black with a central reddish band. The larva is 

 extremely variable in color and markings. It feeds on many 

 plants, among which are apple, grape, plum, and currant. 



FIG. 415. Deilephila lineata. 



The Thysbe Clear-wing, Hemaris tJiysbe (He-ma'ris 

 thys'be). There is a group of Hawk-moths that have the 

 middle portion of the wings transparent, resembling in 

 this respect the Sesiidae and certain Zygaenids; but they 



are easily recognized as Havvk- 

 mpths by the form of the 

 body, wings, and antennae. 

 One of the more common of 

 these is the Thysbe Clear- 

 wing (Fig. 416). The scaled 

 portions of the wings are of a 

 dark reddish brown ; but this 

 F, G . ve.-Htmaris thysbe. spe cies is most easily distin- 



guished from our other common species by a line of scales 

 dividing the discal cell lengthwise and representing the po- 

 sition of the base of vein V. The larva of this species feeds 

 on the different species of Vilmrnum, the snowberry, and 

 hawthorn. 



The Bumblebee Hawk-moth, Hemaris diffinis (He-ma'ris 

 dif-fi'nis). This Clear-wing appears to be about as common 



