EN

triangelvedblomfluga

Xylota triangularis

UnknownLCEULCEU

Overview

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

The triangelvedblomfluga faces severe population decline primarily due to the loss of ancient deciduous forests and old-growth woodlands across Scandinavia. Agricultural intensification and modern forestry practices have eliminated many of the large, hollow trees that provide essential breeding sites for this specialized hoverfly. Climate change compounds these pressures by altering the phenology of flowering plants that adults depend on for nectar, creating temporal mismatches between peak flight periods and optimal foraging conditions.

Threat summary

Habitat

This species inhabits mature deciduous and mixed forests, particularly those containing ancient oak, beech, and birch trees with natural cavities and rot holes. Adults are frequently observed in forest edges and clearings with abundant flowering plants, especially umbellifers and composite flowers.

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Frequently asked questions

Why is triangelvedblomfluga classified as Endangered?
triangelvedblomfluga 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. The triangelvedblomfluga faces severe population decline primarily due to the loss of ancient deciduous forests and old-growth woodlands across Scandinavia. Agricultural intensification and modern forestry practices have eliminated many of the large, hollow trees that provide essential breeding sites for this specialized hoverfly. Climate change compounds these pressures by altering the phenology of flowering plants that adults depend on for nectar, creating temporal mismatches between peak flight periods and optimal foraging conditions.
Where does triangelvedblomfluga live?
triangelvedblomfluga occurs in Austria, Finland, Mongolia, Norway, Russia, and Sweden (plus 1 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 triangelvedblomfluga?
The main threats to triangelvedblomfluga 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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