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Family Megachilidae - Leaf-cutter Bees, Mason Bees, and allies

Bee to check out. - Coelioxys rufitarsis unknown black bee - Megachile - male Bee - Osmia - female Orchard Bee? - Osmia lignaria - female Leaf-cutter Bee? - Megachile xylocopoides Leaf-cutting or Resin Bee - Megachile Leaf-cutter Bee Subgenus Xanthosarus - Megachile Mason Bee - Osmia lignaria lignaria? - Osmia - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
No Taxon (Anthophila (Apoidea) - Bees)
Family Megachilidae (Leaf-cutter Bees, Mason Bees, and allies)
Explanation of Names
From genus Megachile Latreille
Numbers
>630 spp. in 18 genera of 4 tribes and 2 subfamilies in our area, ~4,100 spp. in ~80 genera of 11 tribes and 4 subfamilies worldwide(1)
Overview of our fauna (* –taxa not yet in the guide)
Family Megachilidae
Subfamily Megachilinae
Size
6-18 mm
Identification
Most are of moderate size and stout bodies.
Front wings with two submarginal cells, abdomen with pollen-collecting basket ventrally, absent in parasitic species.(2)

OVERVIEW OF GENERA


Genus Lithurgus - Lithurge










     



     













     







     
Range
worldwide and throughout NA(1)
Habitat
Typically fields with flowers, etc.
Food
Adults visit flowers for nectar. Larvae feed on pollen and nectar.
Life Cycle
Most are leaf-cutters, nesting in ground, in cavities, wood. Tunnels are bored in wood or in the ground. Cell is provisioned with pollen (and nectar?), an egg laid, and cell is sealed over with circular pieces of leaves that fit tightly into cavity. A few (Stelis, Coelioxys) are (clepto)parasitic, laying their eggs in the nests of other members of this family.
Internet References
Fact sheet by D. Serrano(3)
Mites that parasitize Megachilidae. Genus Chaetodactylus Rondani, 1866