A new alien snail species from the Eger stream, Hungary (Mollusca, Ampullariidae)

摘要

Our macrozoobenthon samplings carried out in the Eger stream during 2015–2016 resulted in recording an alien species Marisa cornuarietis (Linneaus, 1758) the giant ramshorn snail which has not been reported so far from outdoor- waters in Hungary. Here we report on collecting several specimens from the urban section of the stream close to the outflow of the Eger thermal spa.