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7 photos

Western Bumble Bee

Bee / Apidae / Bombus / Bombus occidentalis

Show habitat plants
10 - 26 mm

Size

Spring, Summer, Fall

Seasonality

S1

Conservation status

Corbiculae (pollen baskets)

Pollen carrying method

Ground nesting in hollowed cavities, abandoned rodent nests

Nesting

Primitively eusocial or social parasites

Sociality

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Plants near:

29 confirmed and 1256 likely

  • Likely

  • Confirmed

American Bird's-foot Trefoil

Acmispon americanus

Chamise

Adenostoma fasciculatum

Nettle Leaf Giant Hyssop

Agastache urticifolia

Sierra Onion

Allium campanulatum

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Turnips

Brassica rapa

Buckwheat

Fagopyrum esculentum

Sunflower

Helianthus annuus

Mint

Mentha

Alternative names

  • Common Names:

    Western Bumble Bee

  • Spanish Common Names:

  • Scientific Names:

    Bombus occidentalis

Additional Resources

Sources

iNaturalist Licensed Observation Images was accessed on March 27, 2025 from https://registry.opendata.aws/inaturalist-open-data.

"Beginner Bee Field Guide." Colorado State University Extension, 28 Feb. 2022. Accessed 19 Mar. 2025. extension.colostate.edu/wp-content/uploads/2022/03/BeginnerBeeFieldGuide_LowRezWeb_28Feb2022.pdf. PDF.

NatureServe. 2025. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available https://explorer.natureserve.org/. (Accessed: April 03, 2025).