Dirona picta

This marine species occurs from Northern Oregon, USA to Baja California Sur, Mexico. Also reported from Japan.^[2]

• Farmer, W. M. & C. L. Collier. 1963. Notes on the Opisthobranchia of Baja California, Mexico, with range extensions. The Veliger, 6(2): 62–63.
• Goddard, J.H.R. 1987. Observations on the opisthobranch mollusks of Punta Gorda, California, with notes on the distribution and biology of Crimora coneja. The Veliger, 29(3): 267–273.
• Goddard, J. H. R. 1992. Patterns of development in nudibranch molluscs from the northeast Pacific Ocean, with regional comparisons. Ph.D. Dissertation, University of Oregon, Eugene, Oregon.
• Goddard, J. H. R. 1997. Range extensions of eight northeastern Pacific nudibranchs.Opisthobranch Newsletter, 23(4): 13.
• Goddard, J.H.R. 1998. A summary of the prey of nudibranch molluscs from Cape Arago, Oregon. Opisthobranch Newsletter, 24(2): 11–14.
• McDonald, G.W. 1983. A review of the nudibranchs of the California coast. Malacologia, 24(1-2): 114–276.
• McDonald, G.R. & J.W. Nybakken. 1978. Additional notes on the food of some California nudibranchs with a summary of known food habits of California species. The Veliger, 21(1): 110–119.
• Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN 1-888569-01-8. IX, 526 + cd-rom pp.

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• Behrens David W., 1980, Pacific Coast Nudibranchs: a guide to the opisthobranchs of the northeastern Pacific, Sea Challenger Books, California