Taxonomic status of the Trematoda larvae of the Himasthla genus (Trematoda: Echinostomatidae) from the Littorina saxatilis mollusk in the Kandalaksha bay of the White sea

In the Kandalaksha Bay (White Sea), the experiments have been carried out to study the life cycle of the larval trematodes of the genus Himasthla (Dietz, 1909) from the intertidal whelk Littorina saxatilis. It has been established that the blue mussel, Mytilus edulis, is the second intermediate host for this species. The seagull Larus canus is the final host. The species has been identified as Himasthla elongata.