Photo: BombusofSwitzerland / CC BY-SA 4.0
Bombus mesomelas
Mountain Bumblebee
A medium-sized alpine bumblebee with a distinctive colour pattern: the thorax is entirely orange-brown and the abdomen is black with an orange-brown tip. It has a relatively short tongue. It occurs in montane to alpine meadows in the Alps and Jura from 1000 to 2800 m, foraging on bilberry, clovers, and thistles. It nests underground in abandoned rodent burrows, forming small colonies. In Switzerland it is locally common in suitable high-elevation habitats and classified as Least Concern. Swiss Red List: Least Concern (LC).
Species Facts
- Size
- 14–18 mm
- Flight Period
- June to August
- Nesting
- Ground
- Specialization
- Generalist
- Abundance
- Uncommon
- Family
- Apidae
External Sources
This data has been cross-referenced with national sources:
Data Source & Copyright
| Category | Source / Author | License |
|---|---|---|
| Photo | BombusofSwitzerland | CC BY-SA 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: 83%
IdentifiabilityHighImage confidenceMediumImage qualityHighTrait coherenceHigh