San Lorenzo Deermouse
Peromyscus interparietalis
Red List assessment
Critically Endangeredon the IUCN Red List
- EXExtinct
- EWExtinct in the Wild
- CRCritically Endangered
- ENEndangered
- VUVulnerable
- NTNear Threatened
- LCLeast Concern
The IUCN Red List assesses the San Lorenzo Deermouse as Critically Endangered.
- Genus
- Peromyscus
- Red List category
- Critically Endangered
- Data updated
- August 9, 2026
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The San Lorenzo Deermouse is one of the mammals assessed by the IUCN Red List, so it has a page here — with its scientific name, Peromyscus interparietalis, its conservation category and, where one is known, a recorded observation on the map. What is missing is the rest: habitat, distribution, diet, behaviour, threats and the conservation work under way.
Each profile is researched and checked one species at a time, and there are thousands to go. You can put this one at the front of the queue.
In the meantime, the full assessment is on the IUCN Red List.
Questions about the San Lorenzo Deermouse
Is the San Lorenzo Deermouse endangered?
Yes. The IUCN Red List assesses the San Lorenzo Deermouse as Critically Endangered, one of the three threatened categories. The species faces an extremely high risk of extinction in the wild. This is the last category before extinction, and it is reached through a very small or steeply declining population, a tiny range, or both.
What is the scientific name of the San Lorenzo Deermouse?
The San Lorenzo Deermouse is Peromyscus interparietalis.
Other species in the genus Peromyscus
Sources
Conservation status, range description and population estimate come from the IUCN Red List assessment for Peromyscus interparietalis. Countries are derived from that range description, not from a mapped country list. Last refreshed on .
The distribution map is drawn from the IUCN Red List spatial data compiled in 2018. IUCN SSC Small Mammal Specialist Group