Selection: Phyllaplysia lafonti

Phyllaplysia lafonti Fischer, P., 1872

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The colour of Phyllaplysia lafonti is described as very variable, but one distinctive feature of the written description and the accompanying drawing are the way the body coloration consists of concentric bands ['zones concentriques'] of lighter and darker pigmentation.
It was originally posted at these websites as Phyllaplysia lafonti (Fischer P., 1870) [Dolabrifera],
IPN places it at page 60 in the genus Petalifera, with the authority (Fischer, 1870):
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs. Sea Challengers Natural History Books.
Gig Harbor, Washington. 426pp.
I changed the genus into Petalifera because of IPN and kept the authority (Fischer, 1870) because of:
Annotated Check-List of Mediterranean Marine Mollusks, Bruno Sabelli, Riccardo Gianuzzi-Savelli and Daniele Bedulli, Società Italiana di Malacologia, Editioni Libreria Naturalistica Bolognese, 1990
I changed it again on 17 November 2011 into Phyllaplysia lafonti Fischer, P., 1872 because
CLEMAM (Check List of European MArine Mollusca), gives the authority to Fischer P. 1872 , and does not mention "Fischer P., 1870",
I follow with this WoRMS (World Register of Marine Species).
I think at least with the authority is IPN wrong.
I don't know by whom and when it was moved to Petalifera.
Phyllaplysia lafonti is the type species of the genus Phyllaplysia.
More informations on Phyllaplysia lafonti are at Bill Rudman's Sea-Slug Forum!