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140 mason bees species
Osmia nemoris
Osmia juxta
Osmia tristella
Osmia bella
Osmia grinnelli
Osmia atrocyanea
Osmia tersula
Osmia exigua
Osmia californica
Osmia trevoris
Osmia odontogaster
Osmia laticeps
Osmia nifoata
Osmia virga
Osmia sculleni
Osmia cahuilla
Osmia paradisica
Osmia dolerosa
Osmia nanula
Osmia laeta
Osmia gaudiosa
Osmia grindeliae
Osmia rostrata
Osmia regulina
Osmia raritatis
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