Rival Long-horned Bee

Bee / Apidae / Melissodes / Melissodes rivalis

5 - 20 mm

Size

Summer

Seasonality

Specialist

Pollinator preference

Scopae on hind legs

Pollen carrying method

Ground nester

Nesting

Solitary

Sociality

See all

0 confirmed and 24 likely

  • Likely

  • Confirmed

Franciscan Thistle

Cirsium andrewsii

Indian Thistle

Cirsium brevistylum

Douglas' Thistle

Cirsium douglasii

Cobweb Thistle

Cirsium occidentale

See all

Alfalfa

Medicago sativa

Alternative names

  • Common Names:

    Rival Long-horned Bee

  • Spanish Common Names:

  • Scientific Names:

    Melissodes rivalis

Additional Resources

Sources

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

Fowler, Jarrod. "Pollen Specialist Bees of the Western U.S." 2020. Accessed 19 Mar. 2025. https://jarrodfowler.com/pollen_specialist.html.

"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://explore