The two rows of light yellow spots on the outer margin of the hind wings appear more distinctly on the under side. Expanse 1.25-1.60 inch.
Larva feeds on oaks and other plants. Ranges from the Atlantic to the Pacific, from New England to Florida and Arizona.
(2) Thanaos icelus Lintner, [Plate CXXXV], Fig. 2, ♂ (The Dreamy Dusky-wing).
Under side paler than upper, marked with many small, indistinct yellow spots, not forming well-defined bands as in preceding species. Expanse 1.00-1.20 inch.
Caterpillar feeds on aspen, oaks, and witch-hazel. Ranges from Nova Scotia to Oregon, south to Florida and Arizona.
(3) Thanaos lucilius Lintner, [Plate CXXXV], Fig. 3, ♂ (Lucilius’ Dusky-wing).
Closely related to preceding, but distinguished by more regularly checkered fringes of the fore wing and the different arrangement of the spots on the under side. Expanse 1.20-1.40 inch.
Larva feeds on columbine ( Aquilegia). Ranges from New England to Georgia, and westward through the valley of the Mississippi.
PL. CXXXVI