Samoana inflata

[Sebbe]

The carnivorous snail Euglandina rosea was found to have been introduced to Hiva Oa before the surveys in 1995, though not to Tahuata. This species was not found on either island - live or shells - during those surveys, nor on subsequent surveys on Hiva Oa.

This species was found on Hiva Oa and Tahuata, Marquesas Islands.

The species is now extinct.

www.iucnredlist.org/details/168200/0

[surroundx]

Can anybody confirm that Gerlach's Icons of Evolution (2016) provides evidence that this species is extant in the wild, as claimed by (Cowie et al. 2017)?

Cowie, Robert H., Régnier, Claire, Fontaine, Benoît, and Bouchet, Philippe. (2017). Measuring the Sixth Extinction: what do mollusks tell us? The Nautilus 131(1): 3-41.

[Melanie]

According to Icons of Evolution the last shell was found in 2009.

[Melanie]

Samoana inflata is a tree snail species endemic to the island of Tahuata in French Polynesia. It may already be extinct, however the cause of its decline and possible extinction is not known. The carnivorous Rosy Wolfsnail (Euglandina rosea) has caused extinctions of Samoana species on other Marquesas islands but this predator has not been introduced to Tahuata. The presence of the predator on other islands makes a future introduction to Tahuata highly likely. Based on its restricted range (currently known from only one locality), evidence of past declines (which are inferred to be ongoing) and the plausible threat of introduced predators, this species is assessed as Critically Endangered. Surveys are needed to confirm whether this species is still extant or not.

www.iucnredlist.org/species/168200/112362575