Cobalt Blue Mason Bee

Bee / Megachilidae / Osmia / Osmia cobaltina

5 - 14 mm

Size

Spring, Summer

Seasonality

SNR

Conservation status

Scopae on the underside of abdomen

Pollen carrying method

Cavity nester

Nesting

Solitary

Sociality

See all

0 confirmed and 281 likely

  • Likely

  • Confirmed

American Bird's-foot Trefoil

Acmispon americanus

Silver Bird's-foot Trefoil

Acmispon argophyllus

Canyon Birdsfoot Trefoil

Acmispon argyraeus

Foothill Deervetch

Acmispon brachycarpus

See all

Alfalfa

Medicago sativa

Alternative names

  • Common Names:

    Cobalt Blue Mason Bee

  • Spanish Common Names:

  • Scientific Names:

    Osmia cobaltina

Additional Resources

Sources

"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).