INJURIOUS INSECTS 



THE ABBOT SPHINX. 

 (Thyreus Abbotii, Swainson.) 



This is another of the large Grape-feeding insects, oc- 

 curring on the cultivated and indigenous vines and on 

 the Virginia Creeper, and having, in the full grown 

 larva state, a polished tubercle instead of a horn at the 

 tail. Its habitat is given by Dr. Clemens, as New York, 

 Pennsylvania, Georgia, Massachusetts, and Ohio; but 

 though not so common as the Sphinx Moths already 

 described, yet it is often met with both in Illinois and 



Fig. 141. THE ABBOT SPHINX ( Thyreus Abbotii, Swain.) 

 Larva and Moth. 



Missouri. The larva which is represented in the upper 

 part of figure 141 varies considerably in appearance. 

 Indeed, the ground-color seems to depend in a measure 

 on the sex, for Dr. Morris describes this larva as reddish- 

 brown with numerous patches of light-green, and express- 

 ly states that the female is of a uniform reddish-brown, 

 with an interrupted dark-brown dorsal line and trans- 

 verse striae lines. We have reared two individuals which 



