Ptychopteridae (Insecta: Diptera): History of its study and limits of the family

The history of the study of extant and extinct ptychopterids is reviewed. The morphology of the ptychopterid imago and preimaginal stages is discussed. Synonymy of Eoptychopteridae under Ptychopteridae is demonstrated. A new system of the family Ptychopteridae is proposed; it comprises the subfamilies Proptychopterininae (genus Proptychopterina), Eoptychopterinae (genera Eoptychoptera, Architendipes, Crenoptychoptera, Doptychoptera,...