Photo: Lymantria / CC BY 3.0
Hylaeus angustatus
Narrow Yellow-face Bee
A small, slender masked bee (5–6 mm) with black body and white or yellow facial markings. Unlike most bees, it carries pollen internally in its crop instead of externally on its legs. It nests in hollow plant stems and beetle burrows in dead wood, lining its brood cells with a cellophane-like secretion. It is polylectic and visits a wide range of flowers from May to August. Swiss Red List: Near Threatened (NT).
Species Facts
- Size
- 5–6 mm
- Flight Period
- May to August
- Nesting
- Cavities
- Specialization
- Generalist
- Abundance
- Uncommon
- Family
- Colletidae
External Sources
This data has been cross-referenced with national sources:
Data Source & Copyright
| Category | Source / Author | License |
|---|---|---|
| Photo | Lymantria | CC BY 3.0 |
| Taxonomy & Distribution | InfoFauna Switzerland | Public data |
| Global Distribution | GBIF | CC BY 4.0 |
Data Quality
Adequate Last audit: 2026-05-22
Completeness: 100%
✓Photo exists✓Traits consistent✓Description quality✓Red List referenced✓Attribution verified
Confidence: 33%
IdentifiabilityLowImage confidenceLowImage qualityMediumTrait coherenceHigh
Risk flags
Hard to identify
Difficult to identify genus (hylaeus)
