Photo: Karim Strohriegl / CC BY 4.0
Hylaeus difformis
Variable Yellow-face Bee
A slender, mostly black masked bee (6–7 mm) with characteristic white facial markings. Like all Hylaeus, it transports pollen in its crop and nests in pre-existing cavities such as hollow stems and beetle holes. It is polylectic and has a flight period from June to September, visiting a variety of wildflowers. It occurs in Switzerland in warm lowland areas. Swiss Red List: Least Concern (LC).
Species Facts
- Size
- 6–7 mm
- Flight Period
- June to September
- 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 | Karim Strohriegl | CC BY 4.0 |
| 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)
