Greek species of the genus Hydraena (Subgenus Haenydra Rey) (Coleoptera, Hydraenidae)

Fifteen species of Haenydra from continental and insular Greece, including H. christinae sp.n. from the Peloponnesus (belonging to the gracilis-excisa species group), are listed and briefly described. Detailed maps of the so far known distribution in the southern Balkans and in the Aegean areas of all the species dealed with are provided, including original drawings of the male genitalia of most species. The following new synonymy is proposed: H. excisa ssp. exclusa d'Orchymont, 1931 = H. phallica d'Orchymont, 1930. H. aroensis Ferro, 1991 is regarded as Peloponnesian subspecies of H. subintegra Ganglbauer, 1901 (stat. n.). Haenydra dalmatina Ganglbauer, 1901, erroneously recorded by Janssens (1965) from Greece, is excluded from the Greek fauna; H. leonhardi Breit, 1916, and H. phallica d'Orchymont, 1930 are both recorded from Greece for the first time.