Genus ATRYTONE, Scudder
Butterfly.—The antennæ have a stout club, somewhat elongate, and furnished with a short crook at the end. The palpi are very much as in the preceding genus. The neuration is shown in the cut. There is no discal stigma on the fore wing of the male.
Egg.—The egg is hemispherical, somewhat broadly flattened at the apex, covered with small cells, the inner surface of which is marked with minute punctulations.
Caterpillar.—The caterpillar feeds upon common grasses, making a loose nest of silk for itself at the point where the leaf joins the stem. The head is small; the body is cylindrical, thick, tapering abruptly at either end.
Chrysalis.—Covered with delicate hair; the tongue-case free.
[a]Fig. 179.]—Neuration of the genus Atrytone, enlarged.
(1) Atrytone vitellius, Smith and Abbot, Plate XLVI, Fig. 6, ♂ (The Iowa Skipper).
Butterfly.—The male on the upper side is as shown in the plate. The female on the upper side has the hind wings almost entirely fuscous, very slightly yellowish about the middle of the disk. The fore wings have the inner and outer margins more broadly bordered with fuscous than the male, and through the middle of the cell there runs a dark ray. On the under side the wings are bright pale yellow, with the inner margin of the primaries clouded with brown. Expanse, ♂, 1.25 inch; ♁, 1.45 inch.