908 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



out from the stem by means of its two hinder pairs of feet, while the 

 other clings close to the stem. It is nearly an inch and a half long 

 and less than a line in thickness. Its body is quite rough, with a few 

 prominent tubercles, in size and form resembling the scales left by the 

 falling off of the leaves of the juniper. 



The moth may be known by the falcate fore wings, by the three dark 

 spots at the inner angle of the fore wing, and the dark transverse lines; 



in the females the inner line of the forewings is 

 much curved and sinuate. 



The caterpillar was received from Norwich, 

 Conn., early in June, and on the 17th changed 

 into a beautiful pea-green chrysalis, the moth 

 appearing the 29th of the same month. 



I have beaten the males and females of this 

 moth out of white pine trees as late as October 

 5, at Providence, and they probably lay their 

 eggs at that time ; perhaps it is double-brooded. 



The moth. — It has unusually falcate forewings. The 

 ground color of the upper side of the wings is a pale 

 fawn-brown, with a rusty but no purplish tinge, as in 

 some other species of the genus; but the body and 

 antennae are pale fawn-brown. The fore wings at the 

 base are fawn-brown, but with rather thick-set black 

 scales, especially towards the inner line. This line i» 

 curved zigzag, rusty fawn-brown, and is very distinct ;. 

 it begins at the basal third of the costa, and curving 

 around opposite the discal dot, in a generally oblique 

 direction, ends nearly as far from the base of the wing 

 on the inner edge as on the costa ; below the median 

 vein the line is acutely zigzag, forming a tooth just 

 below the lowest median veinlet, followed by a curve 

 inwards on the submedian vein. The discal dot is 

 small, black, but distinct. Just beyond the dot the 

 wing inside of the outer line is rusty, becoming deeper 

 in tone next the line. The outer line is straight, white, 

 narrow, but sharply defined, and forms an acute angle 

 opposite the apex, being retiected back on the costa. 

 The line is shaded externally with dense black scales, 

 becoming thinner towards the outer edge of the wing. 

 From the apex of the bend on the outer line starts 

 a black streak, which is interrupted in the middle, but ends on the lower side 

 of the hooked apex of the wing, which is unusually long and large. The fringe is 

 rust-colored, with the edge white. The outer edge of the wing is deeply hollowed 

 out just below the apex, but below is full and convex. The hind wings are like the 

 fore wings, but without the inner line. The discal dot is distinct, and the outer line 

 is straight, ending just before reaching the costa. There is a broad costal white area. 

 The legs and under side of the wings are fawn-colored, densely speckled with black, 

 giving it a peculiar silky, glossy appearance, suffused with a very slight wine-colored 

 tint. The surface of both wings is uniform ; the discal dots are more diffuse than 

 above, being more distinct on the hind wings. The outer line is white, distinct, 

 broader than above, and bent at right angles upon the costa, but the line disappears 

 before reaching the hind edge, which is whitish. The black stripe sent out from the 



Fig. 301. —Moth, larva, and 

 chrysalis of the juniper twig 

 inch-worm.— From Packard. 



