Indefatigable Island Snail (Naesiotus lycodus)
The Indefatigable Island Snail was described in 1917, it is, or maybe was, endemic to Isla Santa Crus in the Galápagos Islands.
The species was found on tree trunks at 135 to 165 m elevation. [1]
The Indefatigable Island Snail was apparently not found during the most recent field searches and might be extinct.
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References:
[1] William Healey Dall; Washington Henry Ochsner: Landshells of the Galapagos Islands. Proceedings of the California Academy of Sciences. Ser. 4. Vol. 17.: 141-185. 1928
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edited: 01.06.2021