First record of Limnadia lenticularis males in Europe (Branchiopoda : Conchostraca)

Limnadia lenticularis, a well-known representative of the Conchostraca Spin icaudata in Europe, was generally accepted as a parthenogenetic species. Du ring an intensive faunistic study of Austrian conchostracans, four of a tot al of 364 collected L. lenticularis specimens were males. This paper provid es the collection localities, compares the sex ratios of the five conchostr acan species found in Austria, and describes the general morphology of L. l enticularis males, focussing on SEM of the male claspers.