gedeukte sapzweefvlieg
Brachyopa bicolor
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Brachyopa_bicolor
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Brachyopa bicolor faces significant threats from the loss and degradation of old-growth deciduous forests, particularly those containing mature beech and oak trees with suitable rot holes and sap runs. Urban development and intensive forestry practices have reduced the availability of ancient woodland habitats essential for this specialized hoverfly. Climate change may further impact the species by altering forest composition and the microclimatic conditions required for its larval development in tree cavities.
Habitat
This specialized hoverfly inhabits mature deciduous and mixed forests, particularly those dominated by beech, oak, and other broadleaved trees. The species requires old-growth woodland with abundant dead wood, tree holes, and sap runs where larvae can develop in the fermenting organic matter.
Other threatened species in Syrphidae
Threatened in Austria
Frequently asked questions
Why is gedeukte sapzweefvlieg classified as Vulnerable?
Where does gedeukte sapzweefvlieg live?
What are the main threats to gedeukte sapzweefvlieg?
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