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Afranius' Dusky-wing
Butterfly.--Closely related to the preceding species. The hind wings on the upper side in the male sex are almost solid black, the fringes paler. On the under side there is a double row of light spots along the margin of the hind wing in both sexes. The female is generally paler in color on the upper side than the male.
Early Stages.--Unknown.
All the specimens I have seen come from Arizona, where the thing is apparently common.
(7)Thanaos martialis, Scudder, Plate XLVIII, Fig. 4, male; Plate VI, Fig. 37, chrysalis (Martial's Dusky-wing).
Butterfly.--The upper side of the wings is paler than in most species, and has a distinctly purplish-gray cast. The fore wings are crossed by irregular bands of dark spots. The hind wings on the outer half are profusely mottled with small pale spots. All the light spots are repeated on the under side of both wings, and are more distinct on this side than on the upper. Expanse, 1.25-1.40 inch.
Early Stages.--These are partly known. The caterpillar feeds on Indigofera and Amarantus.
The species ranges from Massachusetts to Georgia, and westward to Missouri and New Mexico.