Achatinella livida

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Achatinella livida is an extinct species[1] of air-breathing land snail in the family Achatinellidae. This species was endemic to Oʻahu, Hawaiʻi.

File:Naturalis Biodiversity Center - RMNH.MOL.239103 - Achatinella livida Swainson, 1828 - Achatinellidae - Mollusc shell.jpeg
Achatinella livida shells.

Description

Achatinella livida shells can reach a length of 17mm and a diameter of 9.0mm, with up to six whorls.[2] Their shell is shaped like a cone with a pointed top.[2] Their shells are livid brown to purple, and the tip of the shell slowly transitions to white.[2] The shell's seam is separated by a distinct line that contains a deep orange-brown color.[2]

Distribution and habitat

Achatinella livida is endemic to the Northern Ko’olau mountains on the island of O'ahu.[3][4] Achatinella livida can be found in their native moist forest habitat on Metrosideros polymorpha ('Ohi'a lehua).[2]

Conservation status

Achatinella livida is classified as critically imperiled as of 2014 with a wild population sie estimate of at least 76 individuals.[1] Similar to most Hawaiian tree snails, there are various threats to its survival, such as habitat loss and being endangered by Euglandina rosea and other predators.[5] In 2014, the captive population of A. livida consisted of 25 individuals, including three adults.[1] This captive population was founded in 1997 with 13 adults taken from its original range.[1]

References

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  1. a b c d Script error: No such module "Citation/CS1".
  2. a b c d e USFWS, Hadfield, H., Mountain, M., Hadfield, H., Hadfield, H., Hadfield, H., Holland, H., Hadfield, H., & USFWS, U. (2008). Final Oahu Implementation Plan 2008. In Final Oahu Implementation Plan 2008. https://manoa.hawaii.edu/hpicesu/DPW/2008_OIP/012.pdf
  3. Hadfield, M., University of Hawai`i at Mānoa, US Fish and Wildlife Service, Hadfield, M., & US Fish and Wildlife Service. (n.d.). Rare invertebrate management (M. Hadfield & US Fish and Wildlife Service, Interviewers). In M. Hadfield, US Fish and Wildlife Service, & Hawaii Natural Heritage Program (Eds.), Rare Invertebrate Management (pp. 5–2). https://manoa.hawaii.edu/hpicesu/DPW/2005_MIP/06.pdf
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External links

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