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Very similar is Phidiana militaris. They can be distinguished by the line between the rhinophores: Phidiana indica has a white line on an orange head, Phidiana militaris has an orange or red line on a white head.
Bill Rudman writes at the Sea Slug Forum: Phidiana indica is "also placed in the genera Learchis, Caloria, Hervia and Facelina by various authors. The correct generic placing cannot be resolved at present."
This species was posted on 9 July 2003 at these websites as Phidiana indica (Bergh, 1896) [Learchis],
WoRMS places it in the genus Caloria Trinchese, 1888 with the remark: basis of record Check List of European Marine Mollusca (CLEMAM), available online at http://www.somali.asso.fr/clemam/index.clemam.html,
CLEMAM http://www.somali.asso.fr/clemam/biotaxis.php?X=26162 gives as reference:
Zenetos, Gofas, Russo & Templado, 2004 : p. 204-205 CIESM Atlas of Exotic Molluscs in the Mediterranean,
Zenetos, Gofas, Russo & Templado (2004) write on Caloria indica (Bergh, 1896):
"Relevant Synonyms: Learchis indica Bergh, 1896, Phidiana indica (Bergh) [Israel]. "
I changed it on 17 December 2016 into Caloria indica (Bergh, 1896) [Learchis].
Rudman, W.B., 1999 (March 4) Phidiana indica (Bergh, 1896). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/phidindi
Gofas, S. (2005). Caloria indica (Bergh, 1896). In: MolluscaBase (2016). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=181240 on 2016-12-16
A. Zenetos, S. Gofas, G. Russo and J. Templado Vol. 3. Molluscs - CIESM Atlas of Exotic Species in the Mediterranean, 376 p. with color illustrations,
ISBN13: 978-92-990003-3-5, ISBN10: 92-990003-3-6
More information on Caloria indica as Phidiana indica are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 17 December 2016, Caloria indica (Bergh, 1896)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Cladobranchia/Caloria_indica.htm