CR

Histopona isolata

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Histopona isolata faces severe threats from its extremely restricted range, being endemic to a single cave system in the Canary Islands. The species is particularly vulnerable to human disturbance of its cave habitat, including tourism activities and potential infrastructure development. Climate change poses additional risks through altered humidity and temperature conditions within the cave environment, which could disrupt the delicate microhabitat requirements of this specialized spider.

Threat summary

Habitat

This species is endemic to cave systems in the Canary Islands, where it inhabits the dark, humid zones of volcanic caves. The spider requires stable temperature and humidity conditions typical of deep cave environments, living in crevices and on cave walls where it constructs its webs.

Caves and subterranean habitats· major

Conservation measures underway

Species recoveryAwareness & communications

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Frequently asked questions

Why is Histopona isolata classified as Critically Endangered?
Histopona isolata 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. Histopona isolata faces severe threats from its extremely restricted range, being endemic to a single cave system in the Canary Islands. The species is particularly vulnerable to human disturbance of its cave habitat, including tourism activities and potential infrastructure development. Climate change poses additional risks through altered humidity and temperature conditions within the cave environment, which could disrupt the delicate microhabitat requirements of this specialized spider.
Where does Histopona isolata live?
Histopona isolata occurs in Greece. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Histopona isolata?
The main threats to Histopona isolata are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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