Best Mason

Osmia bicolor is a distinctive European mason bee famous for its unique behavior of nesting inside empty snail shells, which the female often carefully camouflages with grass.

Osmia leaiana is a solitary mason bee native to Europe, recognized for its crucial role as a pollinator and its habit of nesting in pre-existing cavities using chewed leaves.

Osmia aurulenta is a European species of mason bee that is highly notable for its unusual nesting behavior of constructing its brood cells inside empty terrestrial snail shells.

Osmia niveata is a solitary mason bee native to Europe, first described by Fabricius in 1804, and is recognized by its pale, white-haired thorax and pollinating capabilities.

Osmia bucephala, the large-headed mason bee, is a European species recognized for its distinctive broad head and its preference for nesting in aerial cavities and dead wood.

Osmia chalybea is a solitary mason bee species found across North America, distinguishable by its dark metallic blue body and its important role in pollinating spring flora.

Osmia marginata is a European mason bee species notable for its preference for sandy habitats, where females excavate nesting burrows in loose soil rather than using cavities.

Osmia atriventris, known as the dark mason bee, is a North American insect notable for its spring emergence and its effectiveness as a pollinator of commercial blueberry crops.

Osmia integra is a solitary mason bee indigenous to North America, notable for its late spring emergence and its critical role in pollinating native woodland plant species.

Osmia nigrifrons is a species of solitary mason bee found throughout North America, identified by its dark facial features and its efficiency as a pollinator of fruit crops.

Osmia texana is a solitary mason bee native to North America, originally described by Cresson in 1872, which utilizes chewed plant material to construct its nest partitions.

Osmia conjuncta is a North American species of mason bee notable for its spring flight season and its nesting behavior, which involves partitioning cavities with sticky mud.

Osmia bruneri is a mason bee species native to North America, notable for its brownish coloration and its behavior of constructing nest cells using masticated plant matter.

Osmia distincta is a species of solitary mason bee native to North America, originally described by Cresson in 1864, recognized for its vital contribution to local ecosystems.

Osmia proxima is a North American mason bee species notable for its role in pollinating spring-blooming shrubs and its habit of building mud partitions in existing cavities.

Osmia georgica is a species of mason bee indigenous to eastern North America, noted for its solitary lifestyle and its effectiveness in pollinating various spring wildflowers.

Osmia virga is a species of solitary mason bee indigenous to North America, recognized by researchers for its specific spring emergence and pollination of native flora.

Osmia pumila is a small, solitary mason bee native to North America that is distinguished by its dark coloration and its habit of nesting in pre-existing wooden cavities.

Osmia tersula is a solitary mason bee native to the western regions of North America, noted for utilizing chewed leaves to line the brood cells within its wooden nests.