EN

granbarkgnagare

Microbregma emarginatum

Unknown

Overview

Microbregma is a monotypic genus of beetles in the family Ptinidae containing the single species Microbregma emarginatum. It is native to North America.

Primary threats include habitat fragmentation from logging operations that destroy the old-growth forest canopies essential for reproduction. Climate change is altering bark moisture levels and fungal communities that form the species' primary food source, while invasive bark beetles are disrupting the delicate microhabitat balance.

Threat summary

Habitat

This species inhabits the deeply furrowed bark crevices of mature coniferous trees, particularly favoring the north-facing sides of ancient fir and spruce trees where moisture retention is optimal. It requires old-growth forest stands with minimal canopy disturbance and established lichen communities.

Threatened in Åland Islands

Calidris ferrugineaVU

Calidris ferruginea

Declining
VU

Syndyas nigripes

Unknown
Chrysotus cupreusCR

Chrysotus cupreus

Unknown
VU

narulukkokiiluri

Syntormon filiger

Unknown

Frequently asked questions

Why is granbarkgnagare classified as Endangered?
granbarkgnagare is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Primary threats include habitat fragmentation from logging operations that destroy the old-growth forest canopies essential for reproduction. Climate change is altering bark moisture levels and fungal communities that form the species' primary food source, while invasive bark beetles are disrupting the delicate microhabitat balance.
Where does granbarkgnagare live?
granbarkgnagare occurs in Åland Islands, Austria, Canada, Estonia, Finland, and France (plus 11 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to granbarkgnagare?
The main threats to granbarkgnagare are habitat loss and human disturbance. The full IUCN-classified threat record for this species is detailed on the species page.

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