(1) Plestia dorus, Edwards, Plate XLV, Fig. 11, ♂ (The Short-tailed Arizona Skipper).
[a]Fig. 153.]—Genus Plestia. Antenna, magnified 2 diameters. Neuration.
Butterfly.—The upper side is accurately depicted in the plate. On the under side the wings are hoary. The spots of the upper side reappear, the lower spots of the primaries being partially lost in the broad honey-yellow tint which covers the inner margin of that wing. The secondaries are crossed by obscure dark-brown basal, median, and postmedian bands, portions of which are annular, or composed of ring-like spots. The anal angle is clouded with dark brown. Expanse, 1.50-1.60 inch.
Early Stages.—Unknown.
The species has been taken in considerable numbers in Arizona, and ranges thence southward into Mexico.
Genus EPARGYREUS, Hübner
Butterfly.—The antennæ have the club stout, gradually thickened, tapering to a fine point, and abruptly bent into a hook. The palpi are profusely covered with thick scales, in which the third joint is almost entirely concealed. The fore wing of the male is furnished with a costal fold; the hind wing is prominently toothed at the extremity of the submedian vein.
Egg.—The egg is elevated, hemispherical; that is to say, it is flattened at the base, rounded above, its height being almost equal to the width. It is marked by about ten narrow, greatly elevated longitudinal ridges, which sometimes fork below the summit, and between which are a multitude of fine cross-lines. The micropyle is greatly depressed.