L. Forró szerk.: Miscellanea Zoologica Hungarica 12. 1998 (Budapest, 1998)

Ambrus, A., Juhász, P.; Bánkuti, K.: New Hungarian mayfly (Ephemeroptera) species arising from collectings of larvae

kuti, T. Kovács; 06.06.1996, 1, P. Juhász, T. Kovács. Occurs throughout Europe to the Ural Mountains. This species was usually collected at the slowly-flowing sections of rivers with muddy bottom or from the organic debris, but seldom was also found on sections of stronger current. Rare Ephemeroptera species found together with this species: Raptobaetopus tenellus, Procloeon bifidum, Isonychia ignota, Oligoneuriella rhenana, Electrogena fascioculata, Heptagenia coerulans, Choroterpes picteti, Ephoron virgo, Ephemera lineata, Palingenia longicauda, Torleya major. Family Heptageniidae Rhithrogena beskidensis Alba-Tercedor & Sowa, 1987 Kőszeg: Hámor, Gyöngyös XN15 31. 07. 1997, 3, A. Ambrus - Magyarlak: lido, Rába XNOO 19.06.1997, 4, A. Ambrus, K. Bánkuti, T. Kovács - Tiszabecs: Mázsáló, Tisza FU33 01.08.1995, 1, T. Kovács, G. Szilágyi. Specimens were collected on the rough gravelly bottom of swift-flowing river sections. Rare Ephemeroptera species found together with this species: Baetis gracilis, Baetis vardarensis, Oligoneuriella rhenana, Electrogena fascioculata, Heptagenia coerulans, Ephoron virgo, Ephemerella mesoleuca, Torleya major. Electrogena fascioculata (Sowa, 1974) Körmend: Road number 86, Rába XN20 19.06.1997, 4, A. Ambrus, K. Bánkuti, T. Kovács - Kőszeg: Hámor, Gyöngyös XN15 31.07.1997, 1, A. Ambrus - Tiszabecs: Batár outlet, Tisza FU32 30.07.1995, 1, T. Kovács, G. Szilágyi; Szabó-füzes, borderstone number 109, Tisza FU33 03.08.1995, 1, P. Juhász, T. Kovács. The specimens of the species were collected in the same rivers and water-types as the previous species. Rare Ephemeroptera species found together with this species: Raptobaetopus tenellus, Pseudocentroptilum pulchrum, Procloeon bifidum, Isonychia ignota, Oligoneuriella pallida, Rhithrogena beskidensis, Heptagenia coerulans, Ephoron virgo, Ephemera lineata, Ephemerella mesoleuca. Family Fphemerellidae Ephemerella mesoleuca (Brauer, 1857) Könnend: Road number 86, Rába XN20 19.06.1997, 3, A. Ambrus, K. Bánkuti, T. Kovács - Magyarlak: lido, Rába XNOO 19.06.1997, 2, A. Ambrus, K. Bánkuti, T. Kovács. The species occurs in the central, southern and eastern parts of Europe. At both localities low number of individuals were collected, from organic floating material and plants hanging down into the water. Rare Ephemeroptera species found together with this species: Isonychia ignota, Oligoneuriella rhenana, Rhithrogena beskidensis, Electrogena fascioculata, Heptagenia coerulans, Ephoron virgo. Ephemerella mucronata (Bengtsson, 1909) Kó'szeg: Kálvária Hill, Gyöngyös XN15 13.05.1998, 6, A. Ambrus, K. Bánkuti, T. Kovács - Mosonmagyaróvár: Lajta XP60 10.05.1995, 6, A. Ambrus, K. Bánkuti, T. Kovács. A species of Holarctic distribution. The larvae of this species were collected during a flood period from the River Lajta. In the course of following samplings (on 8 occassions) this species was not found at that locality. The locality at Kőszeg both in its appearance and species composition is similar to the areas of Burgenland where this species was collected (Kobersdorf: Schwarzenbach; Marz: Marzerbach; Stoob: Stooberbach; Steinberg-Dörfl: Rabnitz; Langeck: Zöbernbach; Liebing: Güns). Rare Ephemeroptera species found together with this species: Ephemerella notata, Torleya major.