The grub-like females have legs but do not have wings and are yellowish or light brown, except for some dark brown back plates.

The host plants are from the groups: Poaceae, birch, willow, poplar and Vaccinium.

The caterpillars make a protective hull from grass.

Originally from the Old World, they have been introduced in North America.

This article relating to the superfamily Tineoidea is a stub.