INJURING THE LEAVES. 121 



brown pupa or chrysalis (Fig. 56). It remains in 

 this condition until the following year, when it 

 emerges as a moth again. 



The Green Grape-vine Sphinx (Darapsa myron) 

 and the Pandoras Sphinx (Philampelus pandorus) are 

 closely related to the Achemon Sphinx, and similar 

 to it in life - history ^ =^ 



and habits. All three 

 species are subject to 

 the attacks of a small 

 parasitic fl y, t h a t 



Spins Oval COCOOns rig.. vs. Caterpillar with Cocoons of Parasite. 



,i i , ,. , t Adult Parasite at right. Latter magnified. 



upon the backs ot the 



caterpillars, as shown at Fig. 58, which represents the 

 larva of the Green Grape-vine Sphinx so infested. 

 The life-history of these little creatures lias already 

 been described in the Introduction (page 15). 

 Remedies. — Fortunately these sphinx larvae sel- 

 dom become sufficiently numerous to do serious in- 

 jury. They are so conspicuous both on account of 

 their size and the defoliated condition of the branches 

 upon which they are at work, that hand-picking is 

 usually a sufficiently simple and practical remedy. 



The Abbot Sphinx. 



Thyreus abbotii. 



This is a comparatively rare species, and has never 



been known to do serious injury in vineyards. The 



moth (Fig. 59), a handsome, chocolate-brown insect,. 



measuring two and a half inches across the expanded 



