LOMBARDO, A.; MARLETTA, G. No longer so common: findings of Calliopaea bellula d’Orbigny 1837 (Gastropoda: Sacoglossa) and Tayuva lilacina (A. Gould 1852) (Gastropoda: Nudibranchia) along the central-eastern coast of Sicily (Ionian Sea). Natural History Sciences, v. 10, n. 1, 21 Apr.2023.