New and interesting records of Diptera on glacial sand deposits in Silesia (NE Czech Republic). Part 2 – Brachycera except for Schizophora

Abstract

AbstractRecords of 19 species of the dipteran familiesBombyliidae(1 species),Mythicomyiidae(1 species),Therevidae(2 species),Empididae(3 species),Hybotidae(1 species),Dolichopodidae(8 species) andSyrphidae(3 species) from glacial sand deposits in the Czech Silesia (NE Czech Republic) are presented and their association with sandy habitats discussed. All of them are recorded from the Czech Silesia for the first time, 13 are new additions to the fauna of Moravia of which 9 are also new for the whole of the Czech Republic.Dialineura anilis(Linnaeus, 1761) (Therevidae) andSchistostoma truncatum(Loew, 1864) (Dolichopodidae) are classified as psammobiont, 6 species as psammophilous, viz.Exhyalanthrax afer(Fabricius, 1794) (Bombyliidae),Cliorismia rustica(Panzer, 1804) (Therevidae),Cryptophlebs kertesziLichtwardt, 1898,Melanostolus melancholicus(Loew, 1869) (both Dolichopodidae) andParagus constrictusŠimić, 1986 andPelecocera tricinctaMeigen, 1822 (Syrphidae), and 3 species as probably psammophilous, viz.Medetera annulitarsusvon Roser, 1840,M. gruniniNegrobov, 1966 andSciapus basilicusMeuffels & Grootaert, 1990 (all Dolichopodidae).Medetera gruniniis recorded for the first time from Europe and represents a new westernmost limit of its distribution range in the Palaearctic. New southernmost records ofRhamphomyia murinaCollin, 1926 (Empididae) andDrapetis monsmargilaGrootaert, Beuk & Shamshev, 2020 (Hybotidae) are also given.