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The genus Tarmia Lindsey, 1925, long considered a junior synonym of Phanes Godman, 1901, is here revised and its status is revalidated based on morphological evidence. Two Andean species are included in Tarmia: the type species, T. monastica Lindsey, 1925 comb. rev., and a new species herein described, Tarmia greeneyi A. Warren, Medeiros, Dolibaina & O. Mielke sp. nov., from Ecuador, Peru and Bolivia. The male’s symmetrical valvae and aedeagus with a twisted median portion, and the very wide ductus bursae of the female genitalia support Tarmia as valid genus apart of Phanes. Illustrations of the main diagnostic characters of both sexes and a distribution map are provided for the species of Tarmia.

Stinga Evans, 1955, has been considered monotypic since its description despite geographical variation that has not been elucidated. The variation of Stinga morrisoni (W. H. Edwards, 1878) described and figured here includes a range of superficial phenotypes segregated by a combination of geography and elevation, but united by a common genital morphology of both sexes. In addition, a second species of the genus occurring in southern Mexico (Tlaxcala, Puebla and Oaxaca), with different genitalia and superficial traits outside the range of variation seen in S. morrisoni, is described and named as a new species.