CR

Cryptodiscus cladoniicola

Unknown

Overview

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

Cryptodiscus cladoniicola faces severe threats from habitat degradation and climate change affecting its specialized lichen substrates. The species' extremely limited distribution and dependence on specific lichen communities makes it particularly vulnerable to environmental changes. Air pollution and acid deposition pose additional risks by altering the chemical composition of its lichen hosts, while habitat fragmentation reduces population connectivity across its restricted range.

Threat summary

Habitat

This microscopic fungus inhabits specialized lichen communities, particularly those growing on tree bark and rock surfaces in temperate forest environments. It demonstrates strict host specificity, occurring exclusively on certain lichen species that provide both substrate and nutritional resources.

TERRESTRIAL· major

Other threatened species in Stictidaceae

Petractis hypoleucaCR

Petractis hypoleuca

Unknown
CR

Nanostictis peltigerae

Unknown
VU

Thelopsis lichen

Thelopsis flaveola

Unknown
EN

Petractis clausa

Unknown

Frequently asked questions

Why is Cryptodiscus cladoniicola classified as Critically Endangered?
Cryptodiscus cladoniicola 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. Cryptodiscus cladoniicola faces severe threats from habitat degradation and climate change affecting its specialized lichen substrates. The species' extremely limited distribution and dependence on specific lichen communities makes it particularly vulnerable to environmental changes. Air pollution and acid deposition pose additional risks by altering the chemical composition of its lichen hosts, while habitat fragmentation reduces population connectivity across its restricted range.
Where does Cryptodiscus cladoniicola live?
Cryptodiscus cladoniicola occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Cryptodiscus cladoniicola?
The main threats to Cryptodiscus cladoniicola 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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