Bolitoglossa sombra 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Caudata Plethodontidae

Scientific Name: Bolitoglossa sombra Hanken, Wake and Savage, 2005
Common Name(s):
English Shadowy Web-footed Salamander
Taxonomic Notes: This species was described from specimens that were earlier provisionally assigned to Bolitoglossa nigrescens (Hanken et al. 2005).

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2006
Date Assessed: 2006-01-31
Needs updating
Assessor(s): James Hanken, Roberto Ibáñez, David Wake, Federico Bolaños, Gerardo Chaves
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Vulnerable because it is known from fewer than five locations, and there is a possibility of declines in this species if logging does occur within the species limited range.

Geographic Range [top]

Range Description:This species is known from a few adjacent localities from 1,500-2,300m asl on the Pacific slopes of the Cordillera de Talamanca of Costa Rica and far western Panama. It is confirmed as occurring from Cerro Frantzius to within Las Tablas Protected Area in Costa Rica, near the Panamanian border, and possibly also occurs near Santa Clara in nearby western Panama. However, the identity of the single specimen from Panama is uncertain.
Countries occurrence:
Costa Rica
Additional data:
Lower elevation limit (metres):1500
Upper elevation limit (metres):2300
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no information available on the population status of this species.
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is found in dense forest on moss-covered tree trunks, on stumps, on mossy tree butresses, and within the leaf axils of bromeliads, at heights of 0.6-1.5m above the ground. It is considered unlikely to be tolerant of much habitat degradation, and it is presumed to breed by direct development.

Threats [top]

Major Threat(s): Chytridiomycosis is a possible threat to this species, and has been associated with declines of other species to the north and west of its range. Logging is presumably also a threat to any populations that occur in unprotected areas. However, much of its habitat is well protected, and it appears not to be seriously at risk from habitat loss.

Conservation Actions [top]

Conservation Actions: Much of its known range occurs within the Las Tablas Protected Area, which forms part of the adjoining Parque Internacional La Amistad (in the southern part of which this species is also found), in Costa Rica.

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over entire range
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

8. Invasive and other problematic species, genes & diseases -> 8.1. Invasive non-native/alien species/diseases -> 8.1.2. Named species [ Batrachochytrium dendrobatidis ]
♦ timing:Future    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Hanken, J., Wake, D.B. and Savage, J.M. 2005. A solution to the large black salamander problem (genus Bolitoglossa) in Costa Rica and Panamá. Copeia: 227–245.

IUCN. 2006. IUCN Red List of Threatened Species.

Citation: James Hanken, Roberto Ibáñez, David Wake, Federico Bolaños, Gerardo Chaves. 2006. Bolitoglossa sombra. The IUCN Red List of Threatened Species 2006: e.T61901A12569440. . Downloaded on 24 May 2018.
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