ECONOMIC ENTOMOLOGY. 33 



form. When full grown, the larva descends from the vine 

 and draws a few leaves closely together, binding them with 

 silken threads, usually about or near the base of the vine on 

 which it has fed, and within this rude structure changes to 

 a chrysalis of a pale-brown color, dotted and streaked with 

 a darker shade, and with a row of oval dark brown spots 

 along each side. 



The moths from this first brood of larvae usually appear 

 during the latter part of July, when they deposit eggs for 

 a second brood, which mature late in September, pass the 

 winter in the pupa state, and emerge as moths in the fol- 

 lowing May. 



The wings of this insect, when fully expanded, measure 

 about two and a half inches across, their form being long 

 and narrow. 



The fore wings are of a dark olive-green color, crossed 

 by bands and streaks of greenish gray, and shaded on the 

 outer margin with the same hue. The hind wings are dull 

 red, with a patch of greenish gray next the body, shading 

 gradually into the surrounding color. On the under side 

 the red appears on the fore wings, the hinder pair being 

 greenish gray. The antennae are dull white above, rosy 

 below, head and shoulder covers deep olive- green, the rest 

 of the body of a paler shade of green; underneath the 

 body is dull gray. 



This moth rests quietly during the day, taking wing at 

 dusk, when it is extremely active; its flight is very swift 

 and strong, and as it darts suddenly from flower to flower, 

 rapidly vibrating its wings, remaining poised in the air over 

 the objects of its search, while the long, slender tongue is 

 inserted and the sweets extracted, it reminds one strongly 

 of a humming bird. 



