Lantzia carinata 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Hygrophila Lymnaeidae

Scientific Name: Lantzia carinata Jousseaume, 1872
Erinna carinata Jousseaume, 1872
Taxonomic Source(s): Bouchet, P., Marshall, B. and Rosenberg, G. 2016. MolluscaBase (2015). World Register of Marine Species . Available at: (Accessed: 25 April 2016).
Taxonomic Notes: In literature this species was often placed under the genus Erinna which is found in Hawaii in similar habitat. However, this is a case of convergence and not relationship.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) B2ab(iii) ver 3.1
Year Published: 2016
Date Assessed: 2016-06-17
Assessor(s): Van Damme, D.
Reviewer(s): Cumberlidge, N., Ranaivoson, C.H., Randrianasolo, H. & Rasamy, J.
Contributor(s): Gerlach, J.
Facilitator/Compiler(s): Sayer, C.
The species was rediscovered in 1992, after 100 years, but the area of occupancy (AOO) is still very limited as it occurs only at one locality. Invasive plant species are thought to be altering the specific habitat (mosses) that this species is believed to require and based on this threat, there is a single location. This threat is also leading to a continuing decline in habitat quality. It is therefore considered to be Critically Endangered as in the previous assessment (Brown and Griffiths 1996). The species is not cited in the latest records on the Réunion malacofauna (Forcellini 2011, Jay 2016) and it is thought to be Possibly Extinct.
Date last seen: 1992
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is only known from a waterfall at or near the type locality on Réunion (Brown 1994, Brown and Griffiths 1996). The species is not cited in the latest records on the Réunion malacofauna (Forcellini et al. 2011, Jay 2016).
Countries occurrence:
Possibly extinct:
Additional data:
Estimated area of occupancy (AOO) - km2:4
Number of Locations:1
Lower elevation limit (metres):1200
Upper elevation limit (metres):1300
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species was thought to have become extinct and was rediscovered at or near the type locality by O. Griffiths in 1992.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This is a small limpet-like gastropod adapted for clinging to rocks in mountain streams between 1,200-1,300 m asl (Brown 1994). It is found in mosses according to the original description.
Systems:Terrestrial; Freshwater

Use and Trade [top]

Use and Trade: This species is not used.

Threats [top]

Major Threat(s): No particular threats are confirmed. However, invasive plant species are thought to be altering the specific habitat (mosses) this species is thought to require.

Conservation Actions [top]

Conservation Actions: No conservation measures have been implemented or are planned.

Citation: Van Damme, D. 2016. Lantzia carinata. The IUCN Red List of Threatened Species 2016: e.T11302A91286059. . Downloaded on 25 May 2018.
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