272 



PESTS OF ORCHARD AND SMALL FRUITS 



Fig. 385. — Adult of the Grapevine Hog Caterpillar. 

 • Original. 



Caterpillars of Hawk Moths 

 Large and conspicuous worms two or three inches long are often 



found on the foliage of grapes and Virginia creeper. They vary in 



markings, but 



usually have a 

 prominent spine 

 or a distinct hard 

 tubercle at the 

 hind end. They 

 feed singly, have 

 enormous appe- 

 tites, and will 

 easily strip parts 

 of the vines bare 

 of leaves. 



There are three 

 or four species 

 commonly to be 



seen. All are the immature stages of swift-flying, heavy-bodied 



moths, observed usually in the evening, poised over flowers, sipping 



the nectar, and known 



locally in some sections as 



" humming-bird moths." 



The pupal stage is passed 



in the soil. There is one 



generation annually. 

 The Grapevine Hog 



Caterpillar {Ampelopha- 



gus myron Cram.) is two 



inches long, yellowish 



green, has two white 



stripes down the back 



and seven oblique stripes 



on each side, and seven pink or red spots down the middle of the 



back. There is a horn near the hind end. The Achemon Sphinx 



Fig. 386. 



The Achemon Sphinx. Slightly 

 reduced. Original. 



