220 Fiftieth Report on the State Museum 



notch in the outer margin. Their color is a yellowish brown, with a 

 metallic lustre, and several dull-whitish streaks and spots. The hind 

 wings are similar in color to the anterior pair, and are divided into 

 three lobes; the lower division is complete, extending to the base, the 

 upper one not more than two-thirds of the distance. The outer and 

 hind margins of the wings, as well as all the edges of their lobes, 

 are bordered with a deep whitish fringe, sprinkled here and there 

 with brown ; the body is long and slender, and a little darker than the 

 wings. The antennae are moderately long and thread-like, nearly black, 

 but beautifully dotted with white throughout their whole length. The 

 legs are long, banded alternately with yellowish brown and white, the 

 hind ones ornamented with two pairs of diverging spines, having at 

 their base a garter-like tuft of long brown scales, from which feature 

 the moth derives its name." (Saunders.) 



The Pupa. 

 The greenish or yellowish pupa of this insect has a very peculiar form. 

 It may be found hanging from the leaves or bark of the grape, as an 

 irregular, ragged lookmg object with an inclination to the supporting 

 surface of about 40°. The head is obliquely truncate, from which the 

 body tapers, slightly curving dorsally to the tip (fig. 5, PI, IV). It is ridged, 

 angulated, and with numerous projections — the most prominent of which 

 is the dorsal, located about midway of its length. Dr. Fitch has com- 

 pared it to the dead fragments of a little scraggy twig. The pupse vary 

 considerably in color, being either green or some shade of brown. It is 

 said that the green ones are found only on the green leaves and the 

 brown on the brown bark of the twigs; in each case they harmon- 

 ize so perfectly with their surroundings that it is not easy to detect them ; 

 and such was found to be the rule among a large number reared re- 

 cently. The changing of the numerous larvce to this state under such 

 protective conditions, has frequently led to the statement that the insect 

 had suddenly disappeared. The duration of the pupa state is usually 

 six or eight days, but it may be prolonged to fourteen by cold or other 

 unfavorable conditions. 



The Larva. 



In the early spring as the leaves of the grape begin to unfold, here 

 and there some of them may be seen webbed together. Within these 

 clusters of developing leaves, represented in figure 3, PL IV, the greenish 

 white-haired larvae of this insect may be found. As an aid in identifica- 

 tion, its description by Dr. Fitch is herewith transcribed. 



