| cercaria sevillana n sp, a new cercaria (digenea: microphallidae) from nassarius reticulatus (l) (mollusca: prosobranchia) in portugal. | cercaria sevillana n. sp. (digenea: microphallidae) was discovered infecting the gonads and digestive gland of the prosobranch nassarius reticulatus (l.) (nassariidae) collected from the ria de aveiro, portugal. cercariae were obtained by natural emission and were studied under a differential interference contrast microscope and scanning electron microscope (sem). c. sevillana n. sp. is identical to the cercaria found by dolgikh (1965) in the same mollusc host from the black sea, but erroneously ... | 2002 | 12510162 |