[a]Fig. 166.]—Neuration of the genus Erynnis, enlarged.
(1) Erynnis manitoba, Scudder, Plate XLVI, Fig. 2, ♂; Fig. 3, ♁ (The Canadian Skipper).
Butterfly, ♂.—The upper side of the wings is depicted in the plate. On the under side the wings are paler, the fore wings fulvous on the cell, pale gray at the apex and on the outer margin. There is a black shade at the base of the primaries, and a black streak corresponding in location to the discal stigma on the upper side. The hind wings are pale ferruginous, except a broad streak along the inner margin, which is whitish. All the light spots of the upper side of both wings reappear on the under side, but are more distinctly defined, and are pearly-white in color.
♁.—The female, on the under side of the fore wing, has the black discal streak replaced by a broad ferruginous shade. The hind wings are darker, and the light spots stand forth more conspicuously upon the darker ground. Expanse, ♂, 1.25 inch; ♁, 1.30 inch.
Early Stages.—These remain to be ascertained.
The Canadian Skipper is found across the entire continent north of a line roughly approximating the boundary between the United States and the Dominion of Canada. Along the Western Cordilleras it descends into the United States, as far south as Colorado and northern California.
(2) Erynnis morrisoni, Edwards, Plate XLVI, Fig. 26, ♂; Fig. 27, ♁ (Morrison's Skipper).
Butterfly.—The upper side of the wings in both sexes is sufficiently well delineated in the plate to obviate the necessity for description. On the under side the fore wings are pale fulvous, black at the base and ferruginous at the tip, the ferruginous shade interrupted by the subapical pale spots, which on this side of the wing are pearly-white. The hind wings are deep ferruginous, obscured on the inner margin by long pale-brown hairs. From the base to the end of the cell there is a broad silvery-white ray. Beyond the cell the curved postmedian band of fulvous spots which appears above reappears as a band of pearly-white, which stands forth conspicuously on the dark ground. Expanse, ♂, 1.20 inch; ♁, 1.20-1.35 inch.
Early Stages.—Unknown.
The species ranges from southern Colorado to Arizona.