grootoog-bollenzweefvlieg
Eumerus ornatus
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Eumerus_ornatus
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
The grootoog-bollenzweefvlieg faces significant pressure from agricultural intensification and habitat fragmentation across its European range. Traditional bulb cultivation practices that once supported this species are being replaced by intensive monocultures with heavy pesticide use, eliminating the diverse flowering plants essential for adult feeding. Urban expansion and infrastructure development continue to fragment remaining suitable habitats, isolating populations and reducing genetic diversity.
Habitat
This hoverfly species inhabits traditional bulb fields, flower-rich grasslands, and garden areas across parts of Europe, particularly in the Netherlands and surrounding regions. Adults require diverse nectar sources from native flowering plants, while larvae develop in bulbs and other underground plant structures.
Other threatened species in Syrphidae
Threatened in Austria
Frequently asked questions
Why is grootoog-bollenzweefvlieg classified as Vulnerable?
Where does grootoog-bollenzweefvlieg live?
What are the main threats to grootoog-bollenzweefvlieg?
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