VU

urskogsmygga

Pachyneura fasciata

Unknown

Overview

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

Pachyneura fasciata faces severe pressure from the ongoing destruction of old-growth boreal forests across Scandinavia, where intensive logging operations eliminate the ancient spruce and pine stands essential for its survival. Climate change compounds these threats by altering the moisture and temperature regimes of remaining forest fragments, disrupting the delicate fungal communities that this specialized dipteran depends upon. The species' extremely limited dispersal ability means that fragmented populations cannot recolonize cleared areas, leading to progressive range contraction.

Threat summary

Habitat

This specialized fly inhabits pristine old-growth boreal forests dominated by Norway spruce and Scots pine, particularly areas with high humidity and abundant decaying wood. The species requires undisturbed forest environments with complex fungal communities growing on fallen logs and tree stumps.

Threatened in Finland

Calidris ferrugineaVU

Calidris ferruginea

Declining
VU

Large Tree-chernes

Dendrochernes cyrneus

Unknown
Scarce BlackneckCR

Scarce Blackneck

Lygephila craccae

Unknown
EN

knopphodeedderkopp

Walckenaeria nodosa

Unknown

Frequently asked questions

Why is urskogsmygga classified as Vulnerable?
urskogsmygga is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Pachyneura fasciata faces severe pressure from the ongoing destruction of old-growth boreal forests across Scandinavia, where intensive logging operations eliminate the ancient spruce and pine stands essential for its survival. Climate change compounds these threats by altering the moisture and temperature regimes of remaining forest fragments, disrupting the delicate fungal communities that this specialized dipteran depends upon. The species' extremely limited dispersal ability means that fragmented populations cannot recolonize cleared areas, leading to progressive range contraction.
Where does urskogsmygga live?
urskogsmygga occurs in Finland, Japan, Norway, Russia, South Korea, and Sweden. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to urskogsmygga?
The main threats to urskogsmygga 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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