Coluber stolatus; Print; The buff striped keelback (Amphiesma stolatum) is a species of nonvenomous colubrid snake found across Asia. It is the sole species of genus Amphiesma. It is a typically nonaggressive snake that feeds on frogs and toads. It belongs to the subfamily Natricinae; and is closely related to water snakes and grass snakes. It resembles an Asian version of the American garter snake. It is quite a common snake but is rarely seen.; 1700-1880