|A live individual of Aeolidia papillosa, head end towards the left|
Aeolidia papillosa, sometimes known by the common name grey sea slug, is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Aeolidiidae. This species has recently been shown to have a more restricted distribution than previously thought, with animals from California, France and Chile being three other species.
Aeolidia papillosa can be easily identified by its large number of cylindrical cerata covering its body except for a triangular area that extends from the rhinophores to the mid dorsum. The colour is variable, usually with speckled darker markings in the head and back regions.
- Kienberger, K., Carmona, L., Pola, M., Padula, V., Gosliner, T. M. and Cervera, J. L. (2016). Aeolidia papillosa (Linnaeus, 1761) (Mollusca: Heterobranchia: Nudibranchia), single species or a cryptic species complex? A morphological and molecular study. Zoological Journal of the Linnean Society, 177: 481–506. doi: 10.1111/zoj.12379
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