Leostyletus is a genus of sea slugs, specifically of aeolid nudibranchs in the family Eubranchidae.Bouchet, P. (2015). Leostyletus Martynov, 1998. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2015-12-27

Species Species in this genus include: Leostyletus misakiensis (Baba, 1960) Leostyletus pseudomisakiensis Martynov, 1998

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