“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)”, Nat Hist Sci, vol. 10, no. 1, Apr. 2023, doi: 10.4081/nhs.2023.632.