REDESCRIPTION OF PARALECTOTYPES OF LYPEROSOMUM-LONGICAUDA (RUDOLPHI, 1809) AND OTHER DATA ON DICROCOELIIDS FROM SLOVAKIA

Additional measurements of syntypes - paralectotypes of Lyperosomum lo ngicauda (Rudolphi, 1809) have shown that the genital pore in those sp ecimens lies 40-68 mu m posterior to the pharynx. Ovary is smaller tha n testes or of the same size. Intestinal branches are indistinct, but not extending into the posterior part of the body as assumed be B r a u n (1902). The longest syntype No. 1461, illustrated by B r a u n (l. c.), should be considered the lectotype. Described and taxonomically treated are also other forms of L. longicauda as well as the rare Lype rosomum sp. 1 from Pluvialis apricarius, Lyperosomum sp. 2 from Alauda arvensis and Conspicuum sp. from Falco subbuteo. The discussion deals with problems in the systematics of dicrocoeliids which often hamper the unambiguous identification of species.