Paterna, Alessandro. 2024. “The Black Aesculapian Snake Zamenis Longissimus (Serpentes: Colubridae): Characters and Possible Origin of the Subgrisea Morphotype”. Phyllomedusa: Journal of Herpetology 23 (2): 101-9. https://doi.org/10.11606/issn.2316-9079.v23i2p101-109.