The life cycle of Hydrichthys mirus (Cnidaria: Hydrozoa: Anthomedusae: Pandeidae)

  title={The life cycle of Hydrichthys mirus (Cnidaria: Hydrozoa: Anthomedusae: Pandeidae)},
  author={Ferdinando Boero and Jean Paul Bouillon and Cinzia Gravili},
  journal={Zoological Journal of the Linnean Society},
The previously unknown life cycle of the parasitic hydroid Hydrichthys mirus is described. The adult medusa has 5-6 tentacles and could be referred to Leuckartiara. Another species of Hydrichthys has previously been shown to have a Stomotoca-like medusa, characterized by the possession of two tentacles. It is proposed that Hydrichthys originated from the Leuckartiara lineage and that, through paedomorphosis in at least one species, the medusa retained the two-tentacle state of the newly… 
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