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

Abstract

The 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) fragmentatus Krzemiński, n. sp., Leptotarsus (Longurio) wegiereki Krzemiński, n. sp., Tipula (s. lato) anglicana Krzemiński, n. sp. (Tipulidae); Cyttaromyiarossi Krzemiński, n. sp. (Cylindrotomidae); Gurnardia corami Krzemiński, n. gen, n. sp., Pilaria hooleyi Krzemiński, n. sp., Pilaria volodii Krzemiński, n. sp., Cheilotrichia (Cheilotrichia) duplicata Krzemiński, n. sp., Cheilotrichia (Empeda) szwedoi Krzemiński, n. sp., Symplecta (Psiloconopa) gurnetensis Krzemiński, n. sp., Orimarga (Orimarga) lenae Krzemiński, n. sp., Dicranomyia (Dicranomyia) azari Krzemiński, n. sp., Dicranomyia (Dicranomyia) fasciata Krzemiński, n. sp., Helius (Helius) edmundi Krzemiński, n. sp., Helius (Helius) popovi Krzemiński, n. sp., Dicranoptycha staryi Krzemiński, n. sp. (Limoniidae); Wightipsychoda Azar, n. gen. (Psychodidae); Dilophus andrewrossi Nel, Colomb & Waller, n. sp., Bibiodes massiliensis Nel, Colomb & Waller, n. sp. (Bibionidae); Azana cockerelli Blagoderov, n. sp., Aglaomyia vectis Blagoderov, n. sp., Dziedzickia oligocenica Blagoderov, n. sp., Palaeoempalia saxea Blagoderov, n. sp., Mycomyahoolei Blagoderov, n. sp., Leia gurnardensis Blagoderov, n. sp. (Mycetophilidae); Regmocleminahaennii Krzemiński, n. sp. (Scatopsidae); Sylvicola problematica Krzemiński, n. sp. (Anisopodidae); Palaeoberidops barkeri Nicholson, n. gen., n. sp. (Stratiomyidae). The Diptera fauna and palaeohabitat of the Insect Bed is discussed.

A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae)

“…Comparison to other species. Four species of Bibio have been described from the Eocene/Oligocene of Isle of Wight (Krzeminski et al 2019). Of these, Bibio gurnetensis Cockerell, 1917 andBibio oblitus Cockerell, 1921 both have crossvein R-M much longer than the basal Rs, this character suggests the species belong in the genus Dilophus, though, not having seen the original material, I will not make a formal transfer here.…”

Aphids, true hoppers, jumping plant-lice, scale insects, true bugs and whiteflies (Insecta: Hemiptera) from the Insect Limestone (latest Eocene) of the Isle of Wight, UK

“…NHMUK In.26069(1) a, b (part and counterpart, with a psychodid fly figured by Krzeminski et al . 2019), Hooley Collection, Insect Limestone, NW Isle of Wight. Incomplete tegmen.…”

New lacewings from the Insect Bed (late Eocene) of the Isle of Wight (Neuroptera: Nemopteridae, Chrysopidae, Hemerobiidae)

“…2008; Krzeminski et al . 2019), but it did not affect several taxa whose recent relatives live in warm climates, e.g., these Nemopteridae, the Isoptera: Mastotermitidae and the leaf-mimicking Orthoptera: Tettigoniidae: Pseudophyllinae (Nel et al . 2008).…”