Bolyeria multocarinata


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Bolyeria multocarinata
Species Authority: (Boie, 1827)
Common Name(s):
English Round Island Burrowing Boa
French Boa fouisseur de l'Ile Ronde, Boa fouisseur de l'île Maurice, Bolyeride
Spanish Boa Excavadora de Round Island
Eryx multocarinata Boie, 1827

Assessment Information [top]

Red List Category & Criteria: Extinct ver 2.3
Year Published: 1996
Date Assessed: 1996-08-01
Needs updating
Assessor(s): Madagascar Reptile & Amphibian Specialist Group
Formerly restricted to Round Island, Mauritius, this species has not been recorded since 1975. Soil erosion and a general decline in habitat quality have been blamed for the extinction of this Boa.
1994 Extinct? (Groombridge 1994)
1990 Endangered (IUCN 1990)
1988 Endangered (IUCN Conservation Monitoring Centre 1988)
1986 Endangered (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description: Bolyeria multocarinata was formerly restricted to Round Island, a 151 ha volcanic islet approximately 0.25 ha NNE of Mauritius.
Regionally extinct:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It was last recorded in 1975.

Habitat and Ecology [top]

Habitat and Ecology: This fossorial Boa was found in the palm groves of mid-altitude top-soil layers on volcanic slopes.
Systems: Terrestrial

Threats [top]

Major Threat(s): The introduction of rabbits and goats to the island in 1840 resulted in damage to the vegetation, consequently causing soil erosion on the volcanic slopes and deterioration of palm forest habitat. This decline in habitat quality is thought to have been the main reason for the extinction of the Round Island Burrowing Boa.

Citation: Madagascar Reptile & Amphibian Specialist Group 1996. Bolyeria multocarinata. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 29 March 2015.
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