Represents the first comprehensive study of these moths in North America north of Mexico using modern systematic procedures involving assessment of a number of morphological and biological characters in relation to their phylogenetic status. This study also represents a worldwide generic study made in conjunction with the revision of the North American species, primarily to ascertain realistic generic limits and the placement of the various genera once included in the heterogeneous concept of the family. Extralimital genera are noted in a catalog of generic names associated with the Glyphipterigidae.