Hallaxa cryptica  Gosliner & S. Johnson, 1994

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Hallaxa cryptica is characterized by its reddish brown to whitish/cream body colour, with opaque white spots on the mantle. Distinctive are the rhinophores, which are of the same colour as the body, but with opaque white tips. The gills are also of the same colour as the body. Both colour forms have opaque white spots which appear to be tubercles but are not.
There is a picture of the purple form on figure 1 as 'G' in Gosliner & Johnson (1994), page 157, and a picture of the creamy white form
in Gosliner et al. (2015), page 205, the same picture was the nudi of the week.There are many pictures of both colour forms from the Mahall Islands, and
2 pictures of the purple form from Japan online.
Gosliner, T.M, D.W. Behrens & Á.Valdés. 2015. Nudibranch & Sea Slug Identification Indo-Pacific.
New World Publications Inc. Jacksonville, FL. 408 pp.
Gosliner, T.M. & Johnson, S. (1994) Review of the genus Hallaxa (Nudibranchia: Actinocyclidae) with descriptions of nine new species.
The Veliger, 37(2): 155 - 191.online at https://www.biodiversitylibrary.org/page/42464857#page/169/mode/1up
More information on Hallaxa cryptica are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2020), published 29 May 2020, Hallaxa cryptica  Gosliner & S. Johnson, 1994
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Hallaxa_cryptica.htm


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