Elaphe quatuorlineata (Bonnaterre, 1790)
The Four-lined Snake was first reported from the island by Schulz (1996: 213), not providing details on this finding. Later the species was also reported by Thanou et al. (2019: 103 and Supplementary material) and Schmid (2019: 73).
We found several individuals between Agios Petros and Komilio (17/5/2019), south of Maranthochori lake (17/5/2019, Fig. 3E), Agios Petros (17/5/2019), Sivros (19/5/2019), Steno (S of Nydri) (19/5/2019), Athani (23/5/2019). In addition, there are four citizen science records (April and May 2019), but their localities are not available since coordinates are obscured for threatened species.