Intertidal Invertebrates of the Monterey Bay Area, California

Compiled & photographed by Gary McDonald, Long Marine Laboratory, University of California, Santa Cruz

Dirona picta MacFarland in Cockerell & Eliot, 1905              
Painted Dirona
Mollusca: Gastropoda: Opisthobranchia: Nudibranchia: Arminina: Dironidae
Geographic Range: Cape Meares, Tillammok Co., OR, to Isla Angel de la Guardia, Baja California, Mexico; Japan. Synonyms:
Back to: Arminina Back to: Intertidal Invertebrates of the Monterey Bay Area
Dirona_picta_2_0037
Carmel Pt., Monterey Co., CA; 1 Aug 2008; 24mm total length.

Description: Ground color light yellowish-brown to burnt umber, occasional individuals may be greenish. Small pink and cream dots or dark brown, dull green, and yellow dots may occur on body. Cerata inflated and rather tuberculate, same color as body, with a pale red spot on outer side of each ceras, about one third of the distance from base. Rhinophores irregularly perfoliate.
Size: Typically about 25mm in length, but may exceed 40mm.
Notes: Feeds on arborescent bryozoans.

Dirona_picta_1_0006
Carmel Point, Monterey Co., CA; 31 July 2007; 29 mm total length.
Dirona_picta_3_0065
Asilomar, Monterey Co., CA; 12 Nov 2008; 34mm total length.
Dirona_picta_4_0068
Scott Creek, Santa Cruz Co., CA; 10 Dec 2008; 31mm total length.
Dirona_picta_4_0071
Scott Creek, Santa Cruz Co., CA; 10 Dec 2008; 31mm total length.
Dirona_picta_8-0101.jpg
Scott Cr., Santa Cruz Co., CA; 26 Apr 2009; ~18mm total length.
Dirona_picta_9-0113.jpg
Sand Dollar Beach, Monterey Co., CA; 27 May 2009; 19mm total length.

Last Updated: