Insignia macrostoma 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Littorinimorpha Hydrobiidae

Scientific Name: Insignia macrostoma Angelov, 1972

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2010
Date Assessed: 2009-11-19
Assessor(s): Georgiev, D.
Reviewer(s): Georgiev, D., Tomovic, J., Erõss, Z., Fehér, Z., Seddon, M.B., Abdul Malak, D. & Vavrova, L.
This species could be assessed as either Critically Endangered B2ab(iii) or Vulnerable D2, depending on the view of the severity of the threats caused in the future from pollution by different recreational activities as well as the off-take of water for domestic purposes. This species was currently assessed as Vulnerable D2, as at present the habitat degradation is not severe, and it may be that although the species  presence is confirmed only on the type locality, it could be in other closely adjacent springs.

Geographic Range [top]

Range Description:This species is endemic to Bulgaria, where it is found in spring near a sink-hole, close to Polaten village in the western Stara Planina Mountains (Georgiev in litt. 2009).  The total area of the distribution is uncertain, and hence has been estimated as less than 100 km2.
Countries occurrence:
Additional data:
Estimated area of occupancy (AOO) - km2:4
Number of Locations:1
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.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Insignia macrostoma is a freshwater species living in a cold spring in a cave. The habitat quality may be in doubt due to exploitation of the cave.
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: This species is not utilised.

Threats [top]

Major Threat(s): In the future, the pollution caused by the visitors may affect the cave ecosystem to a limited extent (depending on the accessibility to public).

Conservation Actions [top]

Conservation Actions: There are no conservation measures taken for this species. It is recommended that a programme of habitat monitoring be implemented to determine whether potential use of the cave for tourist activities will change the water quality.

Citation: Georgiev, D. 2010. Insignia macrostoma. The IUCN Red List of Threatened Species 2010: e.T155566A4799247. . Downloaded on 19 September 2017.
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