HICKORY CATERPILLARS. 305 
61. Catocala angusii Grote. 
With the same habits as (7. insolabilis. 
Moth. — Fore wings dark greenish gray ; no band on the inner margin, though 
often a cloud at the sinus of the transverse posterior line and below the apex ; no 
triangular white spot on the median space ; basal dash turning upward outwardly ; 
in these respects differing from C. insolabilis. Hind wings black, fringe dark, rarely 
light. Expands 70 to 80 ram . 
Habitat. — With the same distribution as in G. insolabilis. Lucetta 
differs in having a longitudinal shading from the base to beneath the 
apex. 
62. Catocala obscura Strecker. 
Also feeds upon the hickory, according to Mr. Angus. 
Moth.— Fore wings uniform dull smoky gray ; lines fine but distinct; margin of 
transverse posterior line with the upper tooth much the larger ; submarginal space 
whitish, serrated. Hind wings black, fringes white. Expands 70 to 80 mm . 
Dr. D. S. Kellicott says that u the larva of this species feeds on the 
leaves of the shagbark hickory, C. alba, and in habit agrees very closely 
with other described species of the genus ; it is, apparently, a night 
feeder, concealing itself by day at rest under the loosened bark of the 
tree, upon the leaves of which it feeds at night. July 5, 1883, at Pulaski, 
N. Y., larvae were taken from beneath the bark of the hickory, and 
from these, two imagos were obtained. Two sizes were thus obtained 
on that day ; one, evidently soon after its last larval molt, measured 
1.6 inches, width of head .1 7 inch, of eighth and ninth rings .2 inch; the 
smaller ones were 1.1 inches long ; they molted July 19, when they 
were 1.5 inches long and precisely similar to the larger size when taken 
July 5." 
Larva. — The head is somewhat flattened, reticulated with coarse, uneven lines, 
and a heavy black stripe extends along the lateral borders from the articulation of 
the mandibles half way to the apex of head lobes. In this character it closely resem- 
bles the larva of C. retecta, which likewise feeds on the hickory. The antennae are 
long, slender, and white. 
The color of the skin is dark gray, much darker than in C. retecta. The piliferous 
spots which are arranged nearly at the corners of a rectangle are large and light col- 
ored ; these are larger than usual on rings 5 and 12, otherwise there are no humps ; 
there are no lateral fringes as in Vitro nia and Unijuga. The dorsal line is very 
obscure ; there are on rings 5, 9, and 10, irregular black crosses ; the stigmatal 
line distinct and black. The stigmata are of the usual shape ; the long axis, how- 
ever, leans slightly forward, rings black, white within. The ventral surface is 
pinkish with black spots in the abdominal rings except 8 and 9. The color 
of smaller specimens yellowish gray. One larva, then 2 inches in length, spun the 
usual, light, very loose cocoon among the leaves July 20 ; the imago appeared about 
August 15. The pupa was of the usual form and color, covered with bloom ; it 
measured t.l inches. The anal hooklets unusually long. (Kellicott.) 
It inhabits the Middle, Western, and probably Southern States. 
Var. residua Grote. Fore wings of a brighter, bluer color. Hind wings with the 
fringes often dark. 
5 ENT 20 
