Indriidae
Indriidae | |
---|---|
Indri (Indri indri) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Primates |
Suborder: | Strepsirrhini |
Superfamily: | Lemuroidea |
Family: | Indriidae Burnett, 1828[1] |
Type genus | |
Indri É. Geoffroy & G. Cuvier, 1796
| |
Genera | |
| |
Synonyms[3] | |
|
The Indriidae (sometimes incorrectly spelled Indridae
Classification
The 19 living species in the family are divided into three genera.[1][5]
Family Indriidae
- Genus Indri
- Indri, Indri indri
- Genus Avahi, woolly lemurs
- Bemaraha woolly lemur, Avahi cleesei
- Eastern woolly lemur, Avahi laniger
- Moore's woolly lemur, Avahi mooreorum
- Western woolly lemur, Avahi occidentalis
- Sambirano woolly lemur, Avahi unicolor
- Peyrieras's woolly lemur, Avahi peyrierasi
- Southern woolly lemur, Avahi meridionalis
- Ramanantsoavana's woolly lemur, Avahi ramanantsoavani
- Betsileo woolly lemur, Avahi betsileo
- Genus Propithecus, sifakas
- Propithecus diadema group
- Diademed sifaka, Propithecus diadema
- Silky sifaka, Propithecus candidus
- Milne-Edwards's sifaka, Propithecus edwardsi
- Perrier's sifaka, Propithecus perrieri
- Golden-crowned sifaka, Propithecus tattersalli
- Propithecus verreauxi group
- Verreaux's sifaka, Propithecus verreauxi
- Coquerel's sifaka, Propithecus coquereli
- Decken's sifaka, Propithecus deckenii
- Crowned sifaka, Propithecus coronatus
- Propithecus diadema group
Characteristics
The 19 extant Indriidae species vary considerably in size. Not counting the length of their tails, the avahis are only 30 cm (12 in) in length, while the indri is the largest extant strepsirrhine. The tail of the indri is only a stub, while avahi and the sifaka tails are as long as their bodies. Their fur is long and mostly from whitish over reddish up to grey. Their black faces, however, are always bald. The hind legs are longer than their fore limbs, their hands are long and thin, and their thumbs cannot be opposed to the other fingers correctly.
All species are
Indriidae are herbivores, eating mostly leaves, fruits, and flowers. Like some other herbivores, they have a large cecum, containing bacteria that ferment cellulose, allowing for more efficient digestion of plant matter.[6] They have fewer premolar teeth than other lemurs, with the dental formula of: 2.1.2.32.1.2.3
Females and males usually mate monogamously for many years. Mostly at the end of the dry season, their four- to five-month gestation ends with the birth of a single offspring, which lives in the family for a while after its weaning (at the age of five to six months).
See also
- Holocene extinction event
References
- ^ OCLC 62265494.
- ^ "Checklist of CITES Species". CITES. UNEP-WCMC. Retrieved 18 March 2015.
- ISBN 0-231-11013-8.
- ^ "Official Lists and Indexes of Names in Zoology" (PDF). International Commission on Zoological Nomenclature. p. 132. Archived from the original (PDF) on 10 May 2008. Retrieved 14 January 2010.
- S2CID 17614597.
- ISBN 0-87196-871-1.