Natrix tessellata Laurenti, 1768

Number of records.

55 (6% of the data).

Number of grid cells.

32 (10.8% of the entire grid; Table 1; Figs 6, 9B).

Comments.

This species is common in Mykolaiv (Kotenko et al. 2011), but has a scattered distribution, found mostly around the Southern Bug River valley (Dotsenko and Radchenko 2005; Nekrasova 2013; Sillero et al. 2014). We also observed this species along the entire valley of the Southern Bug River.