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Diplommatina lutea

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA MOLLUSCA GASTROPODA ARCHITAENIOGLOSSA DIPLOMMATINIDAE

Scientific Name: Diplommatina lutea
Species Authority: Beddome, 1889

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2012
Date Assessed: 2011-08-22
Assessor(s): Rundell, R.J.
Reviewer(s): Cowie, R., Barker, G., Triantis, K., García, N. & Pippard, H.
Justification:

This species is listed as Near Threatened. It has been recorded from ten islands in the Palau archipelago, generally with relatively large population sizes, and does not meet the thresholds for a threatened category. Nevertheless, this species is threatened by destruction and modification of its native lowland forest habitat, and the islands on which it is found cover a small area (40 km2). It therefore nearly meets the criteria for a threatened category. The species has not been recorded from its type locality (the forested island of Koror) in recent surveys. Further research into population size and distribution is recommended, along with monitoring of populations and threats to its forest habitat.

History:
1996 Data Deficient
1994 Vulnerable (Groombridge 1994)

Geographic Range [top]

Range Description:

This species was found in 2003, 2005 and 2007 surveys of native forest on 10 different Palau islands (Rundell 2010, R.J. Rundell 2007 unpublished data). The species' range and area of occupancy are estimated at 40 km2 and includes records from Babeldaob, Ulebsechel, Ngeruktabel as well as several unnamed smaller islands.

The type locality for this species is the island of Koror (Oreor) (Beddome 1889, Kondo 1936, unpublished data), but the species is no longer found there.

Countries:
Native:
Palau
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: There is no information on population trends for this species. Recent surveys yielded generally large population sizes (Rundell 2005, 2010).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This species has been recorded from tropical lowland moist forest.
Systems: Terrestrial

Use and Trade [top]

Use and Trade: There is no information regarding trade or use for this species.

Threats [top]

Major Threat(s):

This species is threatened by destruction and modification of native lowland forest habitat. Like most Palauan diplommatinid land snails, this species is only found in native forest. Despite the large number of islands (10) across the Palau archipelago on which the species was found, this species was not collected at its type locality, the island of Koror (Oreor), which has been substantially modified by humans. This may suggest that human encroachment has negatively impacted this species. Y. Kondo gives the last record for this species on Koror in 1936.

Conservation Actions [top]

Conservation Actions:

Field work to define the current distribution of this species, as well as research on its population status and trends, is required. Identification of priority sites for species conservation (e.g. key biodiversity areas that include threatened land snails) and reducing the impacts of human activities, especially on the small islands, is also urgently needed. The Palau Conservation Society has been supportive of recent land snail survey work in Palau.


Citation: Rundell, R.J. 2012. Diplommatina lutea. The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 27 December 2014.
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