33^ THE STUDY OF INSECTS. 



ish gray instead of ashy gray ; at the end of the discal cell of 

 the fore wings there is a distinct white spot ; and the two 

 dark bands crossing the middle of the hind wings are not 

 zigzag, and are less distinctly separate ; often they are 

 united into a single broad band. 



The Hog-caterpillar of the Vine, Ampelophaga myron 

 (Am-pe-loph'a-ga my'ron). — There is a group of Hawk- 

 moths the larvae of which have the head and first two 

 thoracic segments small, while the two following segments 

 are greatly swollen. These larvae from a fancied resemblance 

 to fat swine have been termed Hog-caterpillars; and the 

 present species, which is common on grape, has been named 

 the Hog-caterpillar of the Vine. It is a comparatively 

 small species, the full-grown larva being but little more 

 than two inches long. There is a row of seven spots varying 

 in color from red to pale lilac, each set in a patch of pale 



yellow, along the middle of 

 the back. A white stripe with 

 dark green margins extends 

 along the side from the head 

 Fir- .T. ^«.^./.^/; 1 vu to the caudal horn, and be- 



riG. 413. — Ampelophaga inyron^ larva with ^ ^ ^^ 



cocoons of parasites, J^^ ^j^jg ^^j-^ SCVCU obliqUC 



stripes. This larva is often infested by Braconid parasites ; 

 and it is a common occurrence to find one of them with the 

 cocoons of the parasites elttached to it (Fig. 413). The 

 pupa state is passed on the surface of the ground within a 

 rude cocoon made by fastening leaves together with loose 

 silken threads. The adult expands about two and one 

 fourth inches. The fore w4ngs are olive-gray, with a curved, 

 olive-green, oblique band crossing the basal third, a discal 

 point of the same color, and beyond this a large triangular 

 spot with its apex on the costa and its base on the inner 

 margin. 



The Pandorus Sphinx, Philampelus pandorus (Phi-lam'pe- 

 lus pan-do'rus). — This magnificent moth expands from four 

 to four and one half inches. The ground-color of its wings 



