Edmundsella vansyoci is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Flabellinidae.

[2] This species is reported from the Pacific coast of central America from Punta Eugenia, Baja California, Mexico to Costa Rica.

The rhinophores and oral tentacles are tinged with purple and have translucent tips.

These two species can also be distinguished by their cnidosacs, which are translucent white in O. fogata and pink in E.

[3] The description of Orienthella fogata includes a table comparing similar species from Mexico.