The dwarf lemurs are the
lemur
Lemurs ( ) (from Latin ''lemures'' – ghosts or spirits) are wet-nosed primates of the superfamily Lemuroidea (), divided into 8 families and consisting of 15 genera and around 100 existing species. They are endemic to the island of Madaga ...
s of the genus ''Cheirogaleus''. All of the species in this genus, like all other lemurs, are native to
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...
.
Description
Measuring 19–27 cm in body length with a tail about 16–17 cm, they are larger than the
mouse lemur
The mouse lemurs are nocturnal lemurs of the genus ''Microcebus''. Like all lemurs, mouse lemurs are native to Madagascar.
Mouse lemurs have a combined head, body and tail length of less than , making them the smallest primates (the smallest spe ...
but smaller than the
gentle lemur
The bamboo lemurs or gentle lemurs are the lemurs in genus ''Hapalemur''. These medium-sized primates live exclusively on Madagascar.
Etymology
Bamboo lemurs were first described by French zoologist Isidore Geoffroy Saint-Hilaire in 1851. Compar ...
. Their heads are globular compared to the fox-like heads of the lemurs, but their
muzzles are more pointed than those of the
hapalemurs. Their hind limbs are slightly longer than their forelimbs, but not as elongated as in
lepilemurs or
indriids. Dwarf lemurs have an
intermembral index of 71 on average. In contrast to most other primates, their grip is similar to that of South American monkeys with objects picked up and branches grasped between the second and third fingers, rather than between the thumb and index finger. Their nails are somewhat keeled and pointed.
Dwarf lemurs roam the lower strata of the foliage in the coastal forests of eastern Madagascar. They are
nocturnal
Nocturnality is an ethology, animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnality, diurnal meaning the opposite.
Nocturnal creatures generally have ...
and
quadrupeds. They have a period of inactivity (
torpor
Torpor is a state of decreased physiological activity in an animal, usually marked by a reduced body temperature and metabolic rate. Torpor enables animals to survive periods of reduced food availability. The term "torpor" can refer to the tim ...
) during the winter season lasting between four and five months. Their tail serves as an area for fat storage, most of which is consumed during periods of food scarcity. Like most nocturnal prosimians, dwarf lemurs are reported as living solitary or in pairs. They nest in tree holes where they often sleep together in curled up positions. Their territories are marked by fecal and scent markings. Their diet consists primarily of fruits and flowers and they seem to play a part in the pollination of certain plants.
Classification
, 10 species are known.
* Genus ''Cheirogaleus'': dwarf lemurs
**
Montagne d'Ambre dwarf lemur
The Montagne d'Ambre dwarf lemur or Andy Sabin's dwarf lemur (''Cheirogaleus andysabini'') is a species of dwarf lemur known only from Amber Mountain National Park and the surrounding area in northern Madagascar. It was identified in 2005, bu ...
, ''Cheirogaleus andysabini''
**
Furry-eared dwarf lemur, ''Cheirogaleus crossleyi''
**
Groves' dwarf lemur
Groves' dwarf lemur (''Cheirogaleus grovesi'') is a species of dwarf lemur known from Ranomafana and Andringitra national parks and surrounding areas in southeastern Madagascar. The identification was based on comparison of mitochondrial and ...
, ''Cheirogaleus grovesi''
**
Lavasoa dwarf lemur, ''Cheirogaleus lavasoensis''
**
Greater dwarf lemur, ''Cheirogaleus major''
**
Fat-tailed dwarf lemur
The fat-tailed dwarf lemur (''Cheirogaleus medius''), also known as the lesser dwarf lemur, western fat-tailed dwarf lemur, or spiny forest dwarf lemur, is endemic to Madagascar.
Hibernation
Recent research has shown that ''C. medius'' hibernat ...
, ''Cheirogaleus medius''
**
Lesser iron-gray dwarf lemur, ''Cheirogaleus minusculus''
**
Ankarana dwarf lemur
The Ankarana dwarf lemur or Sheth's dwarf lemur (''Cheirogaleus shethi'') is a species of dwarf lemur, part of the ''C. medius'' group, known only from northern Madagascar. It has been found in two reserves (Ankarana Special Reserve and Analamera ...
, ''Cheirogaleus shethi''
**
Sibree's dwarf lemur, ''Cheirogaleus sibreei''
**
Thomas' dwarf lemur
The Thomas' dwarf lemur (''Cheirogaleus thomasi'') is a species of dwarf lemur known only from Anosy, Madagascar. It lives in forested regions along the coast.
References
{{primate-stub
Dwarf lemurs
Mammals described in 1894
Taxa na ...
, ''Cheirogaleus thomasi''
See also
*
List of lemur species
*
List of mammals of Madagascar
References
{{Authority control
Dwarf lemurs