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Vipera berus nikolskii
Vipera (Pelias) berus nikolskii, Vedmederja, Grubant & Rudajeva, 1986 (Nikolsky's Adder), in vicinity of village Haidary, Kharkiv Region, Ukraine
Shrubs at forest meadow edge
Till recently this subspecies was regarded by some writers as a separate species - Vipera nikolskii - in subgenus Pelias. Characteristic for it is the 100% melanism of adults.
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