Blueberry Mason bee

Osmia ribifloris · Order: Hymenoptera · Family: Megachilidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Blueberry Mason bee
Photo: Victor Engel, CC BY

The blueberry mason bee lives where ericaceous plants grow, especially manzanita and Oregon grape. It gathers pollen from those same plants and is also used to pollinate blueberries.

Source: Wikipedia

Where it lives

Found in habitats with ericaceous shrubs such as manzanita, Arctostaphylos species, and Oregon grape.

Source: Wikipedia

What it eats

Collects pollen from ericaceous plants, preferring manzanita and Oregon grape. Can pollinate blueberries and is sometimes employed for commercial blueberry pollination.

Source: Wikipedia

Where it is found in the US

Recorded in 10 of 51 states and DC. Most records: Texas, Utah, California, Arizona, Oregon, Oklahoma, New Mexico, Colorado.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in United States. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

What plants does the blueberry mason bee visit?

It gathers pollen from ericaceous shrubs like manzanita and Oregon grape and also visits blueberry flowers.

Source: Wikipedia

Is the blueberry mason bee used for pollinating crops?

Yes, it is sometimes used commercially to pollinate blueberries.

Source: Wikipedia

Same family (Megachilidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Osmia_ribifloris

Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.