Johannes Winnertz (11 February 1800 – 24 July 1890) was a German entomologist specialising in Diptera. He was a dealer in Krefeld. Works Beitrag zur Kenntniss der Gattung Ceratopogon Meigen. 1852 Beitrag zu einer Monographie der Gallmücken. 1853 Beitrag zu einer Monographie der Pilzmücken. 1863 Beitrag zu einer Monographie der Sciarinen. Wien, 1867 Collections Winnertz' collections of Diptera are in Senckenberg Museum, Naturhistorisches Museum Vienna and the Natural History Museum, Bonn. References Sources Osten-Sacken, C. R. 1903: Record of my life and work in entomology. - Cambridge (Mass.) 1800 births 1896 deaths German entomologists Dipterists