Casta Oahu Tree Snail (Achatinella casta)
The Casta Oahu Tree Snail was described in 1853; it was found in the forests along he ridges north of Pearl Harbor on the island of O’ahu, Hawaiian Islands.
The shells reach sizes of about 1,67 cm in height; they have six whorls, which are rounded and margined above; the simple lip is thickened within and the short columella has a strong plaited brownish tooth; they are glossy white or yellowish with extremely variable transverse bands of brown, pink or white, variously arranged. [1]
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The species is now considered extinct.
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References:
[1] Recovery Plan for the O’ahu Tree Snails of the genus Achatinella. U.S. Department of the Interior Fish and Wildlife Service. Region One, Portland, Oregon. April 1993
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(public domain)
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edited: 09.06.2021