Notes on Rhithrodytes BAMEUL, 1989, with the description of R. minimus nov. sp. from Algeria (Coleoptera, Dytiscidae. Hydroporini, Siettitiina) Author Fery, Hans text Linzer biologische Beiträge 2016 2016-07-30 48 1 431 450 journal article 10.5281/zenodo.5416650 0253-116X 5416650 The genus Rhithrodytes BAMEUL , 1989 The generic name Rhithrodytes was introduced by BAMEUL (1989) for a group of species which before were treated as members of genus Graptodytes SEIDLITZ, 1887 . BAMEUL (1989) established the separation of the new genus based on the distinct sublateral striae of the pronotum which extend from the anterior to the posterior margin and on the symmetric and distinctly curved apex of the median lobe of aedeagus. The declivity of the prosternum between its anterior margin and the procoxae is very weak. In contrast to all other members of Siettitiina SMRŽ, 1982 , species of Rhithrodytes have the elytral epipleuron provided with a distinct oblique carina near the shoulder (see Fig. 5 , arrow "a") – similar to the epipleural carina e.g. in members of Hygrotini PORTEVIN, 1929. This observation was reported in FERY (2013) (cf. Figs 6 and 7 for R. bimaculatus and Hygrotus impressopunctatus (SCHALLER, 1783) , respectively, which are reproductions from FERY 2013 ). For information about the subtribe Siettitiina see MILLER & BERGSTEN (2014) and FERY & BOUZID (2016: 451-481).