VU

tallsotblomfluga

Psilota atra

UnknownLCEULCEU

Overview

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

Psilota atra faces significant pressure from the loss and fragmentation of old-growth boreal forests, which provide the decaying wood substrates essential for its larval development. Climate change poses an additional threat by altering forest composition and accelerating the decay processes that this hoverfly depends upon. Urban expansion and intensive forestry practices that remove dead wood further reduce available breeding habitat across its Scandinavian range.

Threat summary

Habitat

This specialized hoverfly inhabits mature boreal and mixed forests where it depends on specific microhabitats created by decaying hardwood trees, particularly birch and aspen. The larvae develop in the moist, decomposing wood of fallen logs and tree hollows in undisturbed forest environments.

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Threatened in Denmark

Calidris ferrugineaVU

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Frequently asked questions

Why is tallsotblomfluga classified as Vulnerable?
tallsotblomfluga 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. Psilota atra faces significant pressure from the loss and fragmentation of old-growth boreal forests, which provide the decaying wood substrates essential for its larval development. Climate change poses an additional threat by altering forest composition and accelerating the decay processes that this hoverfly depends upon. Urban expansion and intensive forestry practices that remove dead wood further reduce available breeding habitat across its Scandinavian range.
Where does tallsotblomfluga live?
tallsotblomfluga occurs in Denmark, France, Germany, Netherlands, Norway, and Poland (plus 3 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 tallsotblomfluga?
The main threats to tallsotblomfluga 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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