Giant Furrow Bee
CR

Giant Furrow Bee

Halictus quadricinctus

UnknownNTEU

Photo: Photo: (c) Hjalte Kjærby, some rights reserved (CC BY-NC), uploaded by Hjalte Kjærby

Overview

The Giant Furrow Bee (Halictus quadricinctus) is a large, robust ground-nesting bee species characterized by its distinctive metallic green-bronze coloration and four prominent pale bands across its abdomen. As a solitary to semi-social bee, it plays a crucial role as a pollinator of wildflowers and agricultural crops, with females excavating deep burrows in soil for nesting.

The Giant Furrow Bee faces severe population declines primarily due to habitat loss from agricultural intensification and urban development, which has eliminated much of its specialized nesting and foraging habitat. Climate change and the widespread use of pesticides have further compromised remaining populations by reducing food sources and directly impacting bee survival and reproduction.

Threat summary

Habitat

Giant Furrow Bees inhabit open grasslands, prairie edges, and agricultural margins with well-drained, sandy or loamy soils suitable for burrow construction. They require diverse flowering plant communities within foraging distance of nesting areas, particularly favoring areas with sparse vegetation cover that facilitates ground access.

Frequently asked questions

Why is Giant Furrow Bee classified as Critically Endangered?
Giant Furrow Bee 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. The Giant Furrow Bee faces severe population declines primarily due to habitat loss from agricultural intensification and urban development, which has eliminated much of its specialized nesting and foraging habitat. Climate change and the widespread use of pesticides have further compromised remaining populations by reducing food sources and directly impacting bee survival and reproduction.
Where does Giant Furrow Bee live?
Giant Furrow Bee occurs in Albania, Algeria, Armenia, Austria, Belarus, and Belgium (plus 39 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 Giant Furrow Bee?
The main threats to Giant Furrow Bee 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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