394 ARTICULATES: INSECTS. 



The Genus Ellema is smaller than the preceding. E. 

 Harrisii, Clemens, flies the last of June. 



The Genus Smerinthus has the wings scalloped or 

 notched, and the tongue very short. The caterpillars 

 are rough, with a stout thorn on the tail. 



The Blind Smerinthus, S. exccecata of authors, expands 

 about two and a half inches, is fawn-colored, clouded with 

 brown, except the hind wings, which are rose in the mid- 

 dle, and have a black eye-spot with a blue centre. 



Fig. 291. The Genus Sesia 



contains the Clear- 

 winged Sphinges, 

 which are distin- 

 guished by their 

 transparent wings 

 and broad tails. 

 They hover over 

 flowers like hum- 

 ming-birds in the 

 daytime, in July and August. 



./EGERID/E, Steph. This Family comprises moths which 

 have the body large, wings mainly transparent, and, in a 

 state of repose, about half erect. The larvae bore the 

 stems of trees and shrubs. 



The Genus Trockilium is hornet-like in appearance, 

 with the antennae thickened nearly to the end, which 

 is curved but not hooked. The Peach-tree Borer, T. 

 exitiosa, Say, expands about an inch and a half, the fore 

 wings are blue and opaque, the hind ones transparent, 

 Fig. 292. anci the middle of the abdomen has a 



broad orange-colored belt. The male has 

 all the wings transparent, bordered and 

 veined with steel-blue, which is the gen- 

 eral color of the body in both sexes. The 

 Peach-tree Borer, T. female deposits her eggs in summer on the 



exitiosa, Say. 



