VU

Graue Lockensandbiene

Andrena nycthemera

UnknownDDEU

Overview

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

The Graue Lockensandbiene faces severe population declines primarily due to intensive agricultural practices that eliminate the diverse wildflower meadows essential for its specialized foraging behavior. Urban development and infrastructure expansion have fragmented its remaining habitat corridors, while the widespread use of neonicotinoid pesticides directly impacts both adult bees and their ground-nesting larvae. Climate change is altering the flowering phenology of its preferred plant species, creating temporal mismatches that disrupt critical pollination relationships.

Threat summary

Habitat

This solitary ground-nesting bee inhabits extensively managed grasslands, meadows, and field margins with diverse wildflower communities, particularly favoring areas with sandy or loamy soils suitable for excavating nesting burrows. It requires landscapes that maintain both nesting sites and abundant nectar sources from native flowering plants throughout its active season.

Frequently asked questions

Why is Graue Lockensandbiene classified as Vulnerable?
Graue Lockensandbiene 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. The Graue Lockensandbiene faces severe population declines primarily due to intensive agricultural practices that eliminate the diverse wildflower meadows essential for its specialized foraging behavior. Urban development and infrastructure expansion have fragmented its remaining habitat corridors, while the widespread use of neonicotinoid pesticides directly impacts both adult bees and their ground-nesting larvae. Climate change is altering the flowering phenology of its preferred plant species, creating temporal mismatches that disrupt critical pollination relationships.
Where does Graue Lockensandbiene live?
Graue Lockensandbiene occurs in Austria, Belarus, Belgium, Denmark, Estonia, and France (plus 11 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 Graue Lockensandbiene?
The main threats to Graue Lockensandbiene 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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