Oahu tree snails  (Achatinella spp.)

The Oahu tree snails are a classic example of the devastation of the native fauna and flora of the Hawaiian Islands that has occurred following human settlement of the archipelago. Currently, only ten extant species of the genus Achatinella are known (6); these vary greatly in pattern, colour and shape (2), with white and brown shades amongst the commonest colours (6). These small snails have a smooth, glossy shell, which is generally conical in shape (6).