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125. Elvira Rat

Cremnomys elvira


Very little is known about the Elvira rat since there have been no records since the type specimen was collected in 1946.

Also known as the large rock rat the Elvira rat occurs in an area of less than 100km² and its area of occupancy is likely to be less than 10km² will all individuals living in a single location.

There is no population information for this species but it is predicted to be very small as during surveying only 12 adults were recorded in 4 months of surveying.

This species is listed in Schedule V of the Indian Wildlife (protection) Act (considered to be vermin), and is not found in any protected areas. The main threat to this species is a decline in habitat due to the expansion of human settlements, mining in the foothills. Uncontrolled grazing in the area might also be contributing to habitat decline.

There are currently no conservation actions in place but there is ongoing research in understanding the range, and ecology. Further surveys and research is required.

  • Order: Rodentia
  • Family: Muridae
  • Population: Very low
  • Trend: decreasing

EDGE Score

EDGE Score: 5.00 (?)
ED Score: 8.26 (?)
GE / IUCN Red List (?)
Not Evaluated Data Deficient Least Concern Near Threatened Vulnerable Endangered Critically Endangered Extinct in the Wild Extinct


This species is known only from its type locality (the place it was originally found) in of Kurumbapatti, Salem District, in the Eastern Ghats, Tamil Nadu.

Habitat and Ecology

This species is a nocturnal and fossorial (burrowing), living in tropical dry deciduous scrub forest where it has been seen in rocky cliffs and areas.

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Download the Survival Blueprint for this species below. Each survival blueprint is compiled by an EDGE Fellow working on the species with input from collaborators and stakeholders. The Survival Blueprint provides a status review (information on the distribution, protection status, habitat & ecology, threat and stakeholder analysis) and more information on the action programme listed here.  

Vision (30-50 years)

To protect the rocky habitats and sustain conservation of Cremnomys elvira in the Eastern Ghats of Salem, Tamil Nadu, India.

Goal (5-10 years)

Protecting the rocky sites for conserving the Critically Endangered Elvira rats through participatory stakeholder approach in Eastern Ghats of Tamil Nadu


To study the Elvira Rock Rat distribution, population dynamics in rocky cliffs and high altitude private estates in Shervaroyan Hills, Salem, Eastern Ghats of Tamil Nadu Critical
Diet Patterns of Elvira Rock rats in the few isolated patches in the Shervaroyan Hills, Salem, Tamil Nadu Critical
Molecular approaches for answering the origin and evolution of saxatile Elvira Rats Critical
To use radio telemetry to identify the home range and daily movement of Elvira Rock rat Critical
Conservation and management of declining Elvira rat species Critical

Brawin Kumar

  • Project name: Present distribution and conservation status of Cremnomys elvira (Rodentia) in Eastern Ghats, India
  • Project site: Shervaroy Hills, Tamil Nadu, India
  • Active: 2019 - ongoing
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