EN
A rare echinostome cercaria - Cercaria abyssicola Wesenberg-Lund, 1934 is redescribed on the base of the material found in Valvata piscinalis from the lake Asveja in Lithuania. Description of the cercaria is completed with data concerning the number of collar spines (equal to 45), structure of excretory system and pattern of chaetotaxy. Some details are also added to the morphology of redia and metacercaria. The taxonomic status and possible affinities of the species are discussed.