Cuthona abronia
(MacFarland, 1966)

Family: Tergipedidae


East Pacific from Washington, USA to Baja California, Mexico (Behrens & Hermosillo, 2005).


Locality: Fitzgerald Marine Refuge, Moss Beach, San Mateo County, Mid-intertidal, California, USA, Pacific Ocean, 17 March 2007, Rocky tidepool in surgrass beds area. Length: 1.5 cm. Photographer: Ron Wolf.

This species has a characteristic pattern of cream white bands on the head tentacles and cerata. There is a dark purplish band about midway up the oral tenatcles and rhinophores. The ceratal digestive gland ranges from brown to green in colour except for the basal region which is often a reddish colour. There are some larger white spots on the body and a white band down the midline of the posterior foot. It grows to about 15 mm in length. Little is known of its biology.

  • MacFarland, F. M. (1966). Studies of opisthobranchiate mollusks of the Pacific coast of North America. Memoirs of the California Academy of Sciences, 6: 1-546, pls. 1-72.
Authorship details
Rudman, W.B., 2007 (March 22) Cuthona abronia (MacFarland, 1966). [In] Sea Slug Forum. Australian Museum, Sydney. Available from

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  1. Cuthona abronia from California
    From: Ron Wolf, March 24, 2007

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