O. Merkl szerk.: Folia Entomologica Hungarica 66. (Budapest, 2005)

Data to the Hungarian distribution of some aquatic beetles, with notes on an extralimital species (Coleoptera: Gyrinidae, Haliplidae, Elmidae, Dryopidae) T. KOVÁCS

1 & O. MERKL

2

* 'Mátra Museum, H-3200 Gyöngyös, Kossuth Lajos ii. 40, Hungary. E-mail: koati@axelero.hu department of Zoology, Hungarian Natural History Museum H-l

088 Budapest, Baross u. 13, Hungary. E-mail: merkl@zoo.zoo.nhmus.hu Abstract - Locality data of 11 aquatic beetle species from Hungary and one from Ukraine are given. Limnius intermedins FAIRMAIRE, 1881, Limnius muelleri (ERICHSON, 1847) and Oulimnius tuberculatus tuberculatus (P. W. J. MÜLLER, 1806) are new to Hungary. Stenelmis puberula REITTER, 1887 is new to Ukraine. First confirmed records of Esolus angustatus (P. W. J. MÜLLER, 1821 ) and Esolusparallelepipedus (P. W. J. MÜLLER, 1806) are given. Brychius élevants (PANZER, 1794) was found in Hungary for the second time. New records of Macronychus quadrituberculatus P. W. J. MÜLLER, 1806, Orectochilus villosus (O. F. MÜLLER, 1776), Pomatinus substriatus (P. W. J. MÜLLER, 1806) and Potamophilus acuminatus (FABRICIUS, 1792) are listed. A checklist of Elmidae and Dryopidae of Hungary is presented. With 4 figures. Key words - Coleoptera, Gyrinidae, Haliplidae, Elmidae, Dryopidae, Hungary, Ukraine, faunistics, distribution. INTRODUCTION This paper is devoted to publish records of some aquatic beetle species which are (or were) considered rare in Hungary. Two of them, the riffle beetles Potamophilus acuminatus and Macronychus quadrituberculatus were once seen as threatened with extinction all over Europe, but in the recent years they were found in many Hungarian rivers and streams, sometimes in great numbers. One reason for they are recorded from so many localities might be an increased interest and collecting activity. However, it should be taken into account that after 1990 in Hun* Corresponding author.