The Moths and Butterthes 



391 



through holes in the cane thoughtfully made by the strong-jawed larva: 

 before pupation. The grape-vine-root borer, Memyilirns polislijormis, looks 

 much like a large Polistes wasp, having a dark body with two bright yellow 



Fig. 556. — Larva of peach-tree borir, .S'./HH;«.i.i/. ; , •.:!:•'..:, (.\fter Slingerland; natural 



size and much enlarged.) 



narrow bands about the abdomen; the fore wings are brownish black, the 

 hind wings clear; the larvs bore in the roots of wild and cultivated grapes 

 and pupate underground. The raspberry-root borer, Bemhecia marginata, 

 is also very wa.spish in appearance, with its black body repeatedly banded 



FiC. 557. — Cocoons and empty pupal skins of the peach-tree borer, Sanninoidea exitiosa. 

 (.After Slingerland; natural size.)' 



with yellow and transparent fore and hind wings. The eggs are laid on 

 raspberry canes, and the larva;, first boring into the cane, finally work down 

 into the roots. Squashes are often badly injured by having their stems 

 tunneled by the larvic of the squash-vine borer, MeliUia ceto, a Sesian with 

 olive-brown fore wings, clear hind wings, and black or bronze abdomen, 



