guldsmalbi
CR

guldsmalbi

Lasioglossum aeratum

UnknownLCEU

Photo: Photo: (c) Karim Strohriegl, alle rettigheter forbeholdt, lasta opp av Karim Strohriegl

Overview

Lasioglossum aeratum, commonly known as guldsmalbi, is a small metallic sweat bee characterized by its distinctive bronze-green sheen and compact body typical of the Lasioglossum genus. This solitary to semi-social bee plays a crucial role as a pollinator of wildflowers and agricultural crops in its native range, with females constructing ground nests in sandy or clay soils.

Lasioglossum aeratum, known as the guldsmalbi, faces severe population decline primarily due to habitat loss and degradation of its specialized nesting sites. This solitary bee species has extremely limited distribution and is highly vulnerable to environmental changes affecting its host plants and nesting substrate. Climate change and human development pressures continue to fragment and reduce the quality of remaining suitable habitat.

Threat summary

Habitat

Guldsmalbi inhabits open grasslands, meadows, and agricultural margins with exposed sandy or clay soils suitable for ground nesting. The species requires diverse flowering plant communities within close proximity to nesting areas, particularly favoring areas with sparse vegetation cover that facilitate nest construction.

Frequently asked questions

Why is guldsmalbi classified as Critically Endangered?
guldsmalbi is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Lasioglossum aeratum, known as the guldsmalbi, faces severe population decline primarily due to habitat loss and degradation of its specialized nesting sites. This solitary bee species has extremely limited distribution and is highly vulnerable to environmental changes affecting its host plants and nesting substrate. Climate change and human development pressures continue to fragment and reduce the quality of remaining suitable habitat.
Where does guldsmalbi live?
guldsmalbi occurs in Algeria, Andorra, Austria, Azerbaijan, Belarus, and Bulgaria (plus 28 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 guldsmalbi?
The main threats to guldsmalbi 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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