Two new species of the genus Scathophaga (Diptera: Scathophagidae) from Svalbard, with a key to selected northern species and comments on their taxonomy.

Two new Palaearctic species, Scathophaga annae sp. nov. and Scathophaga simaceki sp. nov. are described from Svalbard. An illustrated identification key for selected northern species from of the genus Scathophaga from the Palaearctic and Nearctic Regions is given. Two new combinations are provided: Coniostenum molle (Becker,1894) comb.nov. for Scathophaga mollis (Becker, 1894) and Coniosternum nigripalpis (Becker, 1907) comb. nov. for Scathophaga nigripalpis (Becker, 1907). Two new synonyms are established, Scathophaga (Coniosternum) sychevskaye Ozerov, 2010, syn. nov. = Coniosternum molle and Scathophaga minuta (Maloch, 1935), syn. nov. = Coniosterum lapponicum Ringdahl, 1920. Scathophaga islandica (Becker, 1894) and Scathophaga villipes (Zetterstedt, 1846) are confirmed as valid species. The species Scathophaga furcata (Say, 1823) is confirmed again in this area. Scathophaga janmayeni (Séguy, 1939) is species incertae sedis. Scathophaga islandica (Becker, 1894) is first recorded from Greenland and Sweden (Lappland). [ABSTRACT FROM AUTHOR]