First confirmed occurrences of Notonecta maculata and N. meridionalis (Heteroptera: Notonectidae) in Hungary with notes, maps, and a key to the Notonecta species of Hungary

First records of Notonecta maculata FABRICIUS, 1794, first confirmed record of N. meridionalis POISSON, 1926 and new records of N. obliqua THUNBERG, 1787 (Heteroptera: Notonectidae) are presented from Hungary. An identification key to Notonecta species of Hungary is given. All Hungarian locality data of Notonecta species are summarized on UTM gridmaps. With 25 figures.