True flies (Insecta: Diptera) from the late Eocene insect limestone (Bembridge Marls) of the Isle of Wight, England, UK

Abstract

ABSTRACTThe Diptera fauna from the late Eocene of the Isle of Wight (Bembridge Marls) is studied including redescriptions of formerly described material. The fauna includes the following taxa: Anisopodidae – one species; Bibionidae – 11 species; Ceratopogonidae – one described and two unidentified species; Chironomidae – undetermined species of three subfamilies; Culicidae – four species; Cylindrotomidae – one species; Dixidae – one species; Keroplatidae – one described and four unidentified species; Limoniidae – 31 species; Mycetophilidae – 14 species; Psychodidae – two species; Scatopsidae – two species; Sciaridae – three species; Simuliidae – an unnamed species; Tipulidae – nine species. Diptera Brachycera: Agromyzidae – unidentified species; Anthomyzidae – two species; Asilidae – two species; Bombyliidae – one species; Chloropidae – one species; Dolichopodidae – unidentified species; Empididae – unidentified species; Ephydridae – two species; Heleomyzidae – unidentified species; Lauxaniidae – unidentified species; Otitidae – one species; Phoridae – unidentified species; Rhagionidae – two species; Stratiomyidae – two species; Syrphidae – unidentified species; Tabanidae – one species. Following new taxa are described:Leptotarsus(Longurio)fragmentatusKrzemiński, n. sp.,Leptotarsus(Longurio)wegierekiKrzemiński, n. sp.,Tipula(s. lato)anglicanaKrzemiński, n. sp. (Tipulidae);CyttaromyiarossiKrzemiński, n. sp. (Cylindrotomidae);Gurnardia coramiKrzemiński, n. gen, n. sp.,Pilaria hooleyiKrzemiński, n. sp.,Pilaria volodiiKrzemiński, n. sp.,Cheilotrichia (Cheilotrichia) duplicataKrzemiński, n. sp.,Cheilotrichia (Empeda) szwedoiKrzemiński, n. sp.,Symplecta (Psiloconopa) gurnetensisKrzemiński, n. sp.,Orimarga (Orimarga) lenaeKrzemiński, n. sp.,Dicranomyia (Dicranomyia) azariKrzemiński, n. sp.,Dicranomyia (Dicranomyia) fasciataKrzemiński, n. sp.,Helius (Helius) edmundiKrzemiński, n. sp.,Helius (Helius) popoviKrzemiński, n. sp.,Dicranoptycha staryiKrzemiński, n. sp. (Limoniidae);WightipsychodaAzar, n. gen. (Psychodidae);Dilophus andrewrossiNel, Colomb & Waller, n. sp.,Bibiodes massiliensisNel, Colomb & Waller, n. sp. (Bibionidae);Azana cockerelliBlagoderov, n. sp.,Aglaomyia vectisBlagoderov, n. sp.,Dziedzickia oligocenicaBlagoderov, n. sp.,Palaeoempalia saxeaBlagoderov, n. sp.,MycomyahooleiBlagoderov, n. sp.,Leia gurnardensisBlagoderov, n. sp. (Mycetophilidae);RegmocleminahaenniiKrzemiński, n. sp. (Scatopsidae);Sylvicola problematicaKrzemiński, n. sp. (Anisopodidae);Palaeoberidops barkeriNicholson,n. gen., n. sp. (Stratiomyidae). The Diptera fauna and palaeohabitat of the Insect Bed is discussed.