Genus Cystineura Boisduval (the Bag-veins)
Small, delicate butterflies with elongated fore wings, having the costal vein much swollen near the base, somewhat as in the Satyrinæ. The upper discocellular is lacking in the fore wing, and the cell is feebly closed. Outer margin of the hind wing feebly crenulate; cell open; the two radials spring from a common point.
A number of species and local races have been described.
(1) Cystineura amymone Ménétries, Plate XXXIX, ♂ (The Texas Bag-vein).
On the under side the gray markings of the upper side are replaced by yellow, and on the hind wings there is a transverse white band near the base and an incomplete row of white spots on the limbal area. Expanse 1.50 inch.
Ranges from Kansas southward through Texas into Central America.