DIM0RP1 LSM IN TEBAS OXYCOCCANA. 23 



dimorphism is unusual in the family, and though some time since re- 

 corded by Professor Riley, has not been accepted by Professor Fernald. 

 Dr. Brakeley had several years ago reached that conclusion. The gray 

 moth is called by Packard "the Glistening cranberry moth,'' and de- 

 scribed as follows: 



The body is of a dark slate color, and the palpi, which arc large and project well 

 beyond the head, are of the same color, with a few bright reddish scales at the end 

 of the second joint. The tnft of hair on the abdomen is much paler than the rest <>f 

 the bod v , and of the same color as the legs and the hiud wings, being of a glistening 

 gray color. The fore wings are of a uniform reddish brown color, witli a peculiar 

 glistening or greasy hue. The red tint is due to scattered, bright red scales. There 

 are no other spots or markings on the wing, and the fringe is mottled with red and 

 gray scales as on the wings. On the hind wings the fringe is long, silky, glossy, gray- 

 ish white. Beneath, the fore wings are pale gray, the hiud wings being paler than 

 the fore wings. Length of the body 0.25, expanse of the wing 0.64 of an inch. It may 

 be readily known by the peculiar, shining, greasy look, and by the rich red scales -< :it- 

 tered over the plain, unadorned foro wings. 



Dr. Packard records his specimen as having been found in October, 

 and the description shows it to have been a fresh specimen, and judg- 

 ing from the size, probably a female. Of those collected by me, the 

 females are, as a rule, considerably larger than the males, though there 

 are large males and small females. After a few days the moths largely 

 lose their red scales, which rub off very easily, and they appear then 

 of a uniform gray slate color. 



These insects, emerging from the chrysalis in October — in my experi- 

 ence, on the 9th and after — pass the winter in this stage, seeking shelter 

 in crevices, outhouses, and rubbish heaps. Dr. Brakeley informs me 

 that he has often seen them in his cranberry house, and on bright, 

 sunny days in winter flying at the edge of woods. In the spring, about 

 the middle of April and to the first of May, they deposit their eggs 

 and disappear. After the beginning of May they are rarely seen. By 

 the. 15th of May, or a few days before, the eggs hatch and the larva 

 commences its career precisely as does the Anchylopera, except that it 

 does not first burrow into the leaf. Some collected by me changed to 

 pupa? May 24, and transformed into moths June 4; these moths were 

 smaller in size than the gray specimens and entirely different in color, 

 being yellow, with ochreous mottlings, but no distinct markings on the 

 fore wings, and silky white on the hind wings and body. On fresh 

 specimens the ochreous or reddish scales are dense, and give the insect 

 a deeper color; flown specimens lack these scales and appear uniformly 

 yellow. The sexes do not differ in size, and none expand more, and 

 many less than 0.5 inches. None of these insects showed the slightest 

 tendency to the slate-colored form. The second brood of larvae ap- 

 pears toward the end of June or early in July, and has precisely the 

 same blossom- and berry-eating habit as the Anchylopera : in fact, I found 

 that the berry-eating larvae were mostly those of this species. They 

 continue this until nearly halt' grown, and then spill up sprays and leaves, 



