CR

McDiarmid Thorius

Thorius munificus

Declining

Overview

Thorius munificus is a species of salamander in the family Plethodontidae. It is endemic to Mexico and only known from near its type locality near Las Vigas, Veracruz. Its natural habitats are pine-oak and pine forests, woodlands, and Arbutus forests with abundant shrubby and ericaceous plants. The species is threatened by habitat loss caused by logging, agriculture, and human settlement.

Thorius munificus faces severe threats from habitat destruction due to agricultural expansion and logging activities in its montane cloud forest habitat. The species' extremely restricted range makes it particularly vulnerable to localized environmental changes, while climate change poses additional risks by altering the moisture-dependent microhabitats essential for this salamander's survival.

Threat summary

Habitat

This diminutive salamander inhabits montane cloud forests at elevations between 2,400-3,000 meters in the mountains of Oaxaca, Mexico. It requires the consistently moist microhabitats found under logs, rocks, and leaf litter in these fog-shrouded forests.

Forest· major

Conservation measures underway

Species recovery

Frequently asked questions

Why is McDiarmid Thorius classified as Critically Endangered?
McDiarmid Thorius is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Thorius munificus faces severe threats from habitat destruction due to agricultural expansion and logging activities in its montane cloud forest habitat. The species' extremely restricted range makes it particularly vulnerable to localized environmental changes, while climate change poses additional risks by altering the moisture-dependent microhabitats essential for this salamander's survival.
Where does McDiarmid Thorius live?
McDiarmid Thorius occurs in Mexico. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to McDiarmid Thorius?
The main threats to McDiarmid Thorius are 2.1, 2.3, 5.1, and 5.1.1. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.