76 BUTTERFLIES OF MAINE. 
Faumily—LYCANIDA. 
Sub-Family—THECLIN 4B. 
ee 
38. THECLA HUMULI, Har. 
Thec’-la hu’-mu-li. 
Expanse of wings, from one inch to one inch and a quarter. 
Upper side of the wings, dusky brown with a bluish gray 
tint. The males have a dark oval spot a little above the 
middle. The hind wings have two short thread-like tails, the 
inner one longer than the outer, and tipped with white. The 
anal angle is touched with orange, and there is a large orange 
crescent resting on a black spot between the bases of the tails. 
Along the outer margin is an interrupted line of pale blue. 
Under side of the wings, pale ashy gray with bluish reflec- 
tions. A brown line, edged with white on the outside, starts 
from the outer fourth of the costa of the fore wings, and ex- 
tends about two-thirds of the way across the wing. Another, 
similar but less prominent, scarcely touched with white on 
the inside, a little within and parallel to the outer border, 
extends from near the anal angle up near the costa. 
The hind wings have two lines similar to those of the fore 
wings ; the first, edged on the inside towards the costa with 
orange, runs across the wing to a point near the orange spot 
of the upper side repeated, where it forms a sharp angle and 
continues with one angle after another to the inner margin, 
something like the letter W. The outer line follows a little 
within the outer margin. Anal angle, black, preceded by an 
orange spot. The line at the base of the fringes is black. 
The young of this species are ‘‘ green, downy caterpillars,” 
feeding on the heads of the common hop vine. This butter- 
fly is on the wing during the middle of May. 
