Genus Heloderma (Beaded Lizards) (Sauria: Helodermatidae)
countries with most species  (as of 31st December 2018)

© Rune Midtgaard
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*Countries with same number of species are ranked alphabetically
Rank* Country Species 
No. 1
Mexico
 4
No. 2
Guatemala
 2
No. 3
USA
 1