Description ²

Ground color translucent greyish-white with a pink tinge, head in area of rhinophores pale pinkish-orange. A greenish-blue patch occurs between first and second cerata rows, just anterior and to the left of the cardiac region. A distinct, sometimes discontinuous, dorso-medial white line occurs on dorsum. Cerata greenish at base with white tips and a few minute, opaque white flecks on surface, cores reddish-brown. Oral tentacles about as long as rhinophores, cylindrical and tapered distally to blunt points; translucent greyish-white, very pale orange distally, with a few minute, opaque white dots. Rhinophores verrucose, cylindrical, and slightly tapered to tips; colored as oral tentacles. Cerata arranged in about 5-7 groups on dorso-lateral body margin, leaving dorsum free medially. Anterior foot corners tentaculiform.

Size ²

Up to about 25mm in length.

Geographic Range ²

Coleman Beach, Sonoma Co., CA to Bahía San Quintín, Baja California, Mexico.

Notes ²

Found in bays and estuaries on floating docks and mudflats, usually on the hydroid Ectopleura crocea. Rare.

References ²

COCKERELL, T. D. A. 1901. Three new nudibranchs from California. Journal of Malacology 8(3):85-87. PDF

GODDARD, J. H. R., N. TRENEMAN, T. PRESTHOLDT, C. HOOVER, B. GREEN, W. E. PENCE, D. E. MASON, P. DOBRY, J. L. SONES, E. SANFORD, R. AGARWAL, G. R. MCDONALD, R. F. JOHNSON, & T. M. GOSLINER. 2018. Heterobranch sea slug range shifts in the Northeast Pacific Ocean associated with the 2015-16 El Niño. Proceedings of the California Academy of Sciences, series 4, 65(3):107-131. PDF

KORSHUNOVA, T., A. MARTYNOV, T. BAKKEN, J. EVERTSEN, K. FLETCHER, I W. MUDIANTA, H. SAITO, K. LUNDIN, M. SCHRÖDL, & B. PICTON. 2017a. Corrigenda: Polyphyly of the traditional family Flabellinidae affects a major group of Nudibranchia: aeolidacean taxonomic reassessment with descriptions of several new families, genera, and species (Mollusca, Gastropoda). ZooKeys 725:139-141. PDF

SOUTHERN CALIFORNIA ASSOCIATION OF MARINE INVERTEBRATE TAXONOMISTS. 2018. A taxonomic listing of benthic macro- and megainvertebrates from infaunal & epibenthic monitoring and research programs in the southern California bight, edition 12, 1 July 2018, xviii + 167 pp. PDF

Synonyms ²

Coryphella cooperi, Flabellina cooperi.

Additional Info ²

WoRMS

Sources and Credits

1. (c) Gary McDonald, all rights reserved, uploaded by Gary McDonald
2. (c) Gary McDonald, some rights reserved (CC BY-SA)

More Info

• iNat taxon page
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Global Biodiversity Information Facility (GBIF)
• SeaLifeBase
• World Register of Marine Species

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