- Orthostibia frontalis Blaisdell, 1923

Paratypes: 2 [unknown sex]. MEXICO: Baja California Sur, Espitiru Santo I., Gulf of California, 09/VI/1921. Col. J. C. Chamberlin; Ballena Isd. Labeled: “ Spec. No. 1064”.

Conservation status: Complete, well-preserved.