The morphology of the chemosensory aesthetasc-like setae used during settlement of cypris larvae in the parasitic barnacle Sacculina carcini (Cirripedia : Rhizocephala)
Rhizocephalans of the suborder Kentrogonida are parasitic barnacles whose female cypris larvae must locate a suitable host organism (a decapod crustacean), while the male cypris larvae must find a host containing a virgin female. Some of the sensory structures assumed to be involved in this behaviour are the aesthetasc-like setae found on antennules of the cyprids, of which the females possess one