Doris pseudoargus is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Dorididae.Gofas, S. (2005). Doris pseudoargus. In: MolluscaBase (2016). Accessed through: World Register of Marine Species on 2016-12-03.
Distribution This species was described from Le Havre, Seine-Maritime, France. A neotype was designated in 2002 based on a specimen from Locmariaquer, Atlantic coast of France.Valdés Á. (2002). A phylogenetic analysis and systematic revision of the cryptobranch dorids (Mollusca, Nudibranchia, Anthobranchia). Zoological Journal of the Linnean Society. 136: 535-636. It has been reported from Norway south to the Mediterranean Sea.Rudman, W.B., 2001 (June 12) Archidoris pseudoargus (Rapp, 1827). [In] Sea Slug Forum. Australian Museum, Sydney. It can be found on the lower shore, and offshore to 300 m.
Description Doris pseudoargus can reach 120 mm in length. It is oval and firm. The mantle is variously mottled and blotched with yellow, green, brown, and red and coarsely tuberculate. Its rhinophores are short and conical.
Ecology Doris pseudoargus mainly feeds on the sponge Halichondria panicea.
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