TOWARDS A REVISION OF ENHYDROSOMA BOECK, 1872 (HARPACTICOIDA, CLETODIDAE SENSU POR) - A REEXAMINATION OF THE TYPE SPECIES, E-CURTICAUDA BOECK, 1972, AND THE ESTABLISHMENT OF KOLLERUA GEN-NOV

Following a brief history of the genus Enhydrosoma Boeck, 1872 a redes cription of E. curticauda Boeck, 1872 is given, based on material from Norway and the North Sea. From this and a literature review of the kn own character states in all species of Enhydrosoma and Cletodes Brady, 1872 it is concluded that: (a) the species E. franklini Thistle, 1980 must be moved to the genus Enhydrosomella Monard, 1935; (b) the speci es E. buchholtzi (Boeck, 1872), E. curvirostre (T. Scott, 1894), E. bi furcarostratum Shen & Tai, 1965, E. barnishi Wells, 1967 and E. vervoo rti Fiers, 1987 have greater affinities with Cletodes than with Enhydr osoma and should be removed to new genera; (c) the species E. uniartic ulatum Borutzky, 1928, E. breviarticulatum Shen & Tai, 1964, E. birste ini Borutzky, 1971, E. radhakrishnai Ranga Reddy, 1977 and E. longum S hen & Tai, 1979, which are all found in fresh- or brackish-water lakes in Asia, can be distinguished from Enhydrosoma by the possession of a 1-segmented P4 endopod and are assigned to Kollerua gen. nov. Finally a generic diagnosis is given for Enhydrosoma and Kollerua.