Parydra fossarum is a species of fly in the family Ephydridae. It is found in the Palearctic.[1][2][3] May to December. Associated with wetland or coastal habitats.
^Bei-Bienko, G.Y. & Steyskal, G.C. (1988) Keys to the Insects of the European Part of the USSR, Volume V: Diptera and Siphonaptera, Parts I, II. Amerind Publishing Co., New Delhi.ISBN81-205-0080-6ISBN81-205-0081-4
^Séguy, E. (1934) Diptères: Brachycères. II. Muscidae acalypterae, Scatophagidae. Paris: Éditions Faune de France 28 Bibliotheque Virtuelle Numerique pdf