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

Ephemeroptera species were regarded rare that were found at only 10 or less localities from the 346 sampling sites (Cloeon dipterum was collected at 120 localities) Family Baetidae Baetis gracilis Bogoescu & Tabacaru, 1957 Tiszabecs: Mázsáló, Tisza FU33 01. 08. 1995, 1, T. Kovács, G. Szilágyi. This species occurs in the Alps, Carpathians, Caucasus, and the foothills of Pamir Mountains. A single specimen was collected at a locality characterised by strong water current, from the rough gravelly bottom. Rare Ephemeroptera species found together with this species: Baetis vardarensis, Oligoneuriella rhenana, Rhithrogena beskidensis, Heptagenia coerulans, Torleya major. Baetis niger (Linnaeus, 1761) Kercaszomor: Kerca XM08 08.04.1998, 3, A. Ambrus, P. Juhász, T. Kovács, P. Sevola, I. Turcsányi - Lenti: Road number 75, Kerka XM16 08.04.1998, 1, A. Ambrus, P. Juhász, T. Kovács, P. Sevola, I. Turcsányi. Occurs throughout Europe to the Ural Mountains and in Asia Minor Both of the two specimens were collected from the slowly-flowing edge of water bodies with gravelly bottom skirted with aquatic plants. Rare Ephemeroptera species found together with this species: Leptophlebia marginata, Habrophlebia lauta. Baetis scambus Eaton, 1870 Bódvalenke: road to Komjáti, Bódva DU87 29.05.1997, 1, T. Kovács - Bódvarákó: Ostromosalja, Bódva DU87 29.05.1997, 3, T. Kovács - Tiszabecs: Mázsáló, Tisza FU33 08. 06. 1995., 2, K. Bánkuti, T. Kovács senior, T. Kovács. A species of European distribution. At all the three localities the specimens were collected from the rough gravelly bottom of swift-flowing water bodies. Rare Ephemeroptera species found together with this species: Baetis vardarensis, Torleya major. Baetis vardarensis Ikonomov, 1962 Csákánydoroszló: road to Ivánc, Rába XNIO 17.05.1997, 1, A. Ambrus - Kéked: Topolya-szeg, Hernád EU27 23.08.1997, 8, T. Kovács, V. G. Papp, G. Szilágyi - Mosonmagyaróvár: Lajta XP60 08.05.1997, 7, A. Ambrus, K. Bánkuti, T. Kovács - Tiszabecs: Mázsáló, Tisza FU33 08.06.1995, 1, K. Bánkuti, senior T. Kovács, T. Kovács; 01. 08. 1995, 1, T. Kovács, G. Szilágyi. Except for the northern parts the species occurs throughout Europe. Similarly to the former species these specimens were also collected from the gravelly bottom of fast running sections of rivers. Rare Ephemeroptera species found together with this species: Baetis gracilis, Baetis scambus, Oligoneuriella rhenana, Rhithrogena beskidensis, Heptagenia coerulans, Ephemera lineata, Ephemerella notata, Torleya major. Pseudocentroptilum nanum (Bogoescu, 1951) Tótújfalu: Dráva YL08 17.19.1997, 1, K. Bánkuti, T. Kovács, A. Varga. A species of Central-East Europe. The single specimen was collected from a slow flowing section of the Dráva from the muddy bottom near the edge of the water. Pseudocentroptilum pulchrum (Eaton, 1885) Körmend: road number 86, Rába XN20 09.10.1997, 1, A. Ambrus - Szatmárcseke: Túrbukó, Tisza FU22 27.09.1995, 5, K. Bánkuti, P. Juhász, T. Kovács - Tarpa: 710 river kilometre, Tisza FU12 06.06.1996, 1, T. Kovács - Tiszabecs: Batár outlet, Tisza FU32 30.07.1995., 3, T. Kovács, G. Szilágyi; Mázsáló, Tisza FU33 03.08.1995, 1, P. Juhász, T. Kovács; 28.09.1995, 2, K. Bán-