Photo: Bernd Trommer / CC BY 4.0
Heriades truncorum
Large-headed Resin Bee
A very small, entirely black resin bee with a distinctly broad head and dense white hair bands on the abdomen. It nests in pre-existing cavities in dead wood, hollow stems, and bee hotels, sealing cells with plant resin. It is common in Swiss gardens and forest edges. Swiss Red List: Least Concern (LC).
Species Facts
- Size
- 5–7 mm
- Flight Period
- June to September
- Nesting
- Cavities
- Specialization
- Generalist
- Abundance
- Common
- Family
- Megachilidae
External Sources
This data has been cross-referenced with national sources:
Data Source & Copyright
| Category | Source / Author | License |
|---|---|---|
| Photo | Bernd Trommer | CC BY 4.0 |
| Taxonomy & Distribution | InfoFauna Switzerland | Public data |
| Global Distribution | GBIF | CC BY 4.0 |
Data Quality
High Quality Last audit: 2026-05-22
Completeness: 100%
✓Photo exists✓Traits consistent✓Description quality✓Red List referenced✓Attribution verified
Confidence: 67%
IdentifiabilityMediumImage confidenceMediumImage qualityHighTrait coherenceHigh
