Bees of the Osmia genus are frequently called “Mason Bees,” and they’re most common in the western United States. They differ from other types of bees because of their unusual nesting habits.
Osmia females carry dry pollen in a patch of hairs (scopa) on the underside of the abdomen, a feature they share in common with other females in the family Megachilidae.
Photo By Rollin Coville
Bees, wasps, butterflies, moths, flies and some beetles pollinate more than 70 percent of flowering plants, but North America's native pollinators face multiple threats to their health and habitat. In "Attracting Native Pollinators," the Xerces Society offers a complete action plan for protecting these industrious animals by providing flowering habitat and nesting sites while also providing specifics for identifying types of bees and other pollinating insects.