Lithacodia phya. Lithacodia penthis (Schaus) was listed by Franclemont and Todd (1983) as occurring in the United States. Examination of the holotype of Eustrotia penthis Schaus in USNM and that of Acontia phya Druce in BMNH, shows that the material from Arizona is the latter species. Although the two species are similar, Lithacodia phya is smaller (forewing length 8 mm versus 10 mm), the basal pinkish-white patch is much shorter and rounder, the reniform spot is more quadrangular, and the tegumen in the male genitalia is wider.