272 PESTS OF ORCHARD AND SMALL FRUITS 
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 stmp parts 
of the vines bare 
of leaves. 
There are three 
Fic. 385.— Adult of the Grapevine Hog Caterpillar. or four species 
Original. commonly to be 
seen. All are the immature stages of swift-flving, 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 | 
ae | 
Fig. 386.—The Achemon Sphinx. Slightly 
reduced. Original. 
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 
