Revisional notes on Rhithrodytes Bameul 1989, with the description of a new subspecies and the introduction of Rhithrodytes dorsoplagiatus (Fairmaire) as a valid species (Coleoptera, Dytiscidae). Linzer Biologische Beitraege, 28(2), 31 Dezember 1996: 917-931. 919 [Zoological Record Volume 133]