One species, Povolnya quercinigrella (Fig. 1), occurs in Illinois. This species formerly was placed in Caloptilia but was transferred to Povolnya by De Prins and De Prins (2005).
Povolnya quercinigrella feeds in a leaf cone on oaks, Quercus spp. (Fagaceae) of the black oak group. The larva chews a series of small holes through the leaf, both alongside the basal edge of the cone and on the adjacent area of the cone itself.
Figure 1. Povolnya quercinigrella. Adult, and leaf cone on black oak, Quercus sp. (Fagaceae).