Remarks
The products of Systema Dipterorum (and the former Biosystematic Database of World Diptera) are disseminated in three formats and distributed via three media. The formats represent the traditional catalog, nomenclator and species database. Systema Dipterorum works with ITIS (Catalogue of Life https://www.catalogueoflife.org/data/dataset/1101) and was an initial member of the Species2000 program. Systema Dipterorum is endorsed by the Council for the International Congresses of Dipterology, which is a scientific member of the International Union of Biological Sciences.
The Diptera Web after 12 years is now officially closed.