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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.
Osmia caerulescens, the blue mason bee, is a species of solitary bee from the family Megachilidae. [1] It has a Holarctic distribution extending into the Indomalayan region, although its presence in the Nearctic may be due to human-assisted introduction.
Osmia parietina, also known as the Western mason bee or wall mason bee, is a species of solitary bee within the family Megachilidae. [1] Description
Osmia lignaria, commonly known as the orchard mason bee or blue orchard bee, [1] is a megachilid bee that makes nests in natural holes and reeds, creating individual cells for its brood that are separated by mud dividers.
Red mason bees are excellent pollinators, particularly of apple trees. [3] For effective use of these bees as pollinators of winter rape plantations in Poland, they should be located at least 300 m from entomophilous plants, which distract the bees from pollinating the plants of interest.
They are considered mason bees, which is a common descriptor of bees in several families, including Megachilidae. Within the genus Megachile , frequently also referred to as leafcutter bees , M. campanulae is a member of the subgenus Chelostomoides , which do not construct nests from cut leaves, but rather from plant resins and other materials.
Osmia californica is a megachilid bee, or mason bee. Native to North America, the mason bees are important pollinators, with O. california pollinating over 33 genera from 13 plant families. [1] O. californica generally emerges a little later in the spring than the better known orchard mason bee (O. lignaria).
Osmia bicolor, the two-coloured mason-bee, is a Palearctic species of bee in the genus Osmia. It is outstanding amongst other megachilid bees in that it nests in empty snail shells. It is outstanding amongst other megachilid bees in that it nests in empty snail shells.