Photo: Arnstein Staverløkk / Norsk institutt for naturforskning / CC BY 3.0
Chelostoma campanularum
Harebell Carpenter Bee
A very slender, entirely black bee (5-7 mm) with a narrow cylindrical abdomen adapted for nesting in small beetle burrows in dead wood. It is oligolectic on Campanula (bellflower) pollen. Males sleep inside bellflower blossoms, gripping the petals with their modified terminal segments. It is univoltine, flying from June to August. In Switzerland it occurs in gardens, meadows, and forest edges with abundant Campanula flowers. Swiss Red List: Least Concern (LC).
Species Facts
- Size
- 5-7 mm
- Flight Period
- June to August
- Nesting
- Cavities
- Specialization
- Campanula (bellflowers)
- Abundance
- Uncommon
- Family
- Megachilidae
External Sources
This data has been cross-referenced with national sources:
Data Source & Copyright
| Category | Source / Author | License |
|---|---|---|
| Photo | Arnstein Staverløkk / Norsk institutt for naturforskning | CC BY 3.0 |
| 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
