Burnsius oileus (Linnaeus, 1767);  Comments: SE AZ, SW NM, S TX to GA, S to CR, Gr. & L. Antilles TL: Algeria.

Burnsius oileus ♀ genitalia (ventral view, with sterigma enlarged on the right)
COSTA RICA: Limon Prov., Ruta 32, Rio Blanco, 5.9 km W of Guapiles, 12-IX-1986 (GTA-10073)

Image published in: Austin, George T., and Andrew David Warren 2001. Taxonomic notes on some Neotropical skippers (Lepidoptera: Hesperiidae): Pyrgus, Heliopetes, and Heliopetes (Pyrginae). Dugesiana 8(1): 1-13, 27 figs.; f. 12