The black of wing and tail-feathers is less pure (fuscous in the female) and edged with white or tawny.
The wings are not shaded with fuscous toward the base as much as in A. zerene.
In his description of this form Stephens states that the fore wings are fuscous mixed with chestnut, with darker clouds.
Color dark brownish or fuscous in summer pelage; winter pelage unknown.
They may be obscured by a fuscous shade or may be modified by a dull or lustrous surface.
The stipe is usually white above, fuscous below, at the apex almost evanescent; hence the cernuous sporangia.
Female in summer: Similar, but upperparts streaked all over with black, and the black wings largely replaced by fuscous.
It is of a pale yellowish color, becoming a dusky brown (fuscous) when bruised.
The color is bright blue when young, becoming pale and whitish in age, with a tendency to fuscous on the center.
Once I thought I saw the fuscous gleam of a red fox stealing silently through the brush.