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- ›Mason, Leafcutter, Carder, and Resin Bees
- ›Megachilinae
- ›Osmiini
Mason Bees
Osmia
Mason bee is a name now commonly used for species of bees in the genus Osmia, of the family Megachilidae. Mason bees are named for their habit of using mud or other “masonry” products in constructing their nests, which are made in naturally occurring gaps such as between cracks in stones or other small dark cavities; when available some species preferentially use hollow stems or holes in wood made by wood-boring insects.
25 branches of this genus, most-observed first

Osmia
subgenusOsmia

Helicosmia
subgenusHelicosmia

Melanosmia
subgenusMelanosmia

Neosmia
subgenusNeosmia

Cephalosmia
subgenusCephalosmia

Hoplosmia
subgenusHoplosmia

Diceratosmia
subgenusDiceratosmia

Pyrosmia
subgenusPyrosmia

Metallinella
subgenusMetallinella

Allosmia
subgenusAllosmia

Erythrosmia
subgenusErythrosmia

Hemiosmia
subgenusHemiosmia

Euthosmia
subgenusEuthosmia

Tergosmia
subgenusTergosmia
Osmia microdonta
speciesOsmia microdonta

Osmia subtersa
speciesOsmia subtersa

Osmia maxillaris
speciesOsmia maxillaris
Nasutosmia
subgenusNasutosmia
Osmia angustipes
speciesOsmia angustipes
Osmia caraformis
speciesOsmia caraformis
Osmia gulmargensis
speciesOsmia gulmargensis
Osmia interrupta
speciesOsmia interrupta
Osmia kashmirensis
speciesOsmia kashmirensis
Hapsidosmia
subgenusHapsidosmia
Trichinosmia
subgenusTrichinosmia
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Osmia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 57674.