Preparing a new comprehensive work on dustywings became necessary, as more than half of the known coniopterygid species were described after the last monograph of this family. Present work gives a check-list of all of the valide living species of Coniopterygidae (Insecta: Neuroptera), as well as entirely new identification keys for the satisfactorily known species, for the species groups and the supraspecific taxa of the family. The check-list contains data about the geographical distribution of the species and taxonomic groups, and in some cases taxonomic or nomenclatural remarks. For convenient use of the identification keys a number of figures are given. The subdivision of some larger genera and subgenera is modified also. This monograph shuld be useful for insect taxonomists and for entomologists interested in researches on agroecosystems.