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93. Gerp’s Mouse Lemur

Microcebus gerpi


Gerp’s mouse lemur was only discovered in 2012, as the Sahafina Forest, where it is found, had not been studied until 2008 and 2009.

Because of how recently it was discovered, very little is known about its behaviour, ecology, reproduction or communication. Lemurs belong to the suborder Strepsirhini, which also includes bushbabies, pottos and lorises. These groups are the most basal living primates and are characterised by their ‘wet’ noses. Ancestral prosimians, possibly resembling today’s mouse lemurs, are thought to have colonised Madagascar from mainland Africa 50-60 million years ago. In the absence of competition from other non-primate mammals, these species diversified to fill a wide range of unusual ecological niches. Gerp’s mouse lemur appears to be restricted to a lowland rainforest fragment of 15.6km², which is surrounded by secondary forest previously used for rice farming. Gerp’s lemur is threatened by hunting, habitat degradation, as well as habitat loss, from unsustainable farming practices and logging.

  • Order: Primates
  • Family: Cheirogaleidae
  • Population: Unknown
  • Trend: decreasing
  • Size: 12-14cm
  • Weight: 68g

EDGE Score

EDGE Score: 5.14 (?)
ED Score: 9.66 (?)
GE / IUCN Red List (?)
Not Evaluated Data Deficient Least Concern Near Threatened Vulnerable Endangered Critically Endangered Extinct in the Wild Extinct


Gerp’s mouse lemurs are found in central eastern Madagascar, only in their type locality; the Sahafina Forest.

Habitat and Ecology

They inhabit lowland primary and secondary rainforest between 29-230m above sea level. Little is known of its ecology

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Loading species distribution map...

This wordcloud illustrates the threats facing this species. The size of each word indicates the extent of a species range that is affected by that threat (larger size means a greater area is affected). The colour of the word indicates how much that threat impacts the species (darker shades of red mean the threat is more severe).

Crops Hunting Logging

Threat wordcloud key:

Small area affected
Large area affected
Least severe
Most severe
Severity unknown
Source: The IUCN List of Threatened Species. Version 2017.1.
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