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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Theriodontia
Subordo: Cynodontia
Infraordo: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohors: Theria
Cohors: Eutheria
Infraclassis: Placentalia
Cladus: Boreoeutheria
Superordo: Euarchontoglires
Ordo: Primates
Subordo: Strepsirrhini
Infraordo: Lemuriformes
Superfamilia: Lemuroidea

Familia: Indriidae
Genus: Avahi
Species: Avahi unicolor

Avahi unicolor Thalmann & Geissmann, 2000

Primary references

Thalmann, U.; Geissmann, T. 2000: Distribution and geographic variation in the western woolly lemur (Avahi occidentalis) with description of a new species (A. unicolor). International journal of primatology, 21(6): 915–941. DOI: 10.1023/A:1005507028567


Avahi unicolor in Mammal Species of the World.
Wilson, Don E. & Reeder, DeeAnn M. (Editors) 2005. Mammal Species of the World – A Taxonomic and Geographic Reference. Third edition. ISBN 0-8018-8221-4.

Vernacular names
Deutsch: Nordwestlicher Wollmaki, Sambirano-Wollmaki

The Sambirano woolly lemur (Avahi unicolor), also known as the Sambirano avahi or unicolor woolly lemur, is a species of woolly lemur native to western Madagascar.[4]


The species are located in Cacamba, on the peninsula of Ampasindava, in northwestern Madagascar . This sub-species is distinguished form Avahi occidentalis by its lack of the white facial outline and the lack of the black hairless circles that surround the eyes . The face itself is slightly more pale than the upper head which creates a slight contrasting facial outline caused by the fur length and consistency (facial hair is short and not curled in comparison to the rest of the body) . The contrasting facial outline has a small fur spot above the nose and the forehead that presents the appearance of a dark line . Its eyes are maroon with black, hairless eyelids. The snout is also black and hairless, but the corners of the mouth have a white tint. The fur of the head and body is a light gray-beige, and has a sightly curled, freckled appearance. Its tail is gray-brown or reddish-brown, while the base is a pale brown or cream color. The back is slightly darker in the shoulder-blade area. The lower body's limbs are an off-white color, while the fur on the chest, belly, and inner limbs is fairly thin and light-gray in color.[3]

This species is very poorly known, since so far there have been just a few specimens found. They might be living in the Sambirano region in north-western Madagascar. Probable limits of their distribution are the Sambirano River in the north and the Andranomalaza or Maevarano River in the south.[1]

As It is not known to which degree the species is hunted, deforestation is probably the main threat it has to face. It is listed on Appendix I of CITES. Since there are only a few known specimens in protected areas, Additional research and extending the reserves would be essential.[1]

Louis, E.E.; Bailey, C.A.; Sefczek, T.M.; Raharivololona, B.; Schwitzer, C.; Wilmet, L. (2020). "Avahi unicolor". IUCN Red List of Threatened Species. 2020: e.T41579A115579946. doi:10.2305/IUCN.UK.2020-2.RLTS.T41579A115579946.en. Retrieved 19 November 2021.
"Checklist of CITES Species". CITES. UNEP-WCMC. Retrieved 18 March 2015.
Thelmann, U.; Geissmann, T. (2000). "Distribution and geographic variation in the western woolly lemur (Avahi occidentalis) with description of a new species (A. unicolor)" (PDF). International Journal of Primatology. 21 (6).
Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. p. 119. ISBN 0-801-88221-4. OCLC 62265494.

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