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Genus Coelioxys - Cuckoo-leaf-cutter Bees

Bee to check out. - Coelioxys rufitarsis Coelioxys octodentata - Coelioxys octodentatus - male   - Coelioxys Cuckoo Leaf Cutter Bee?  - Coelioxys Coelioxys sp - Coelioxys octodentatus Leafcutter Cuckoo Bee - Coelioxys sayi - male bee - Coelioxys Cuckoo Leafcutter found near Mexican border - Coelioxys edita - female
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 (Leafcutter, Mason, and Resin Bees, and allies)
Subfamily Megachilinae
Tribe Megachilini
Genus Coelioxys (Cuckoo-leaf-cutter Bees)
Other Common Names
Cuckoo Leafcutting Bee, Leafcutter-parasite
Synonyms and other taxonomic changes
Coelioxys Latreille 1809
Explanation of Names
Greek coelia 'belly' + oxys 'sharp'(1) (refers to the sharp ovipositor and tapered female abdomen)
46 spp. in 9 subgenera in our area, ~500 spp. in 15 subgenera worldwide(2)
ca. 7-10 mm
Abdomen conical, pointed in female, armed with teeth or spines in male(3); lack pollen baskets under abdomen, otherwise resemble a Megachile
worldwide [map(2)]
Seen at flowers in fields, etc.
Typically Jun-Sep in NC(4)
Adults take nectar at flowers. (They must be eating for themselves, because they do not provision a nest.)
Life Cycle
Cleptoparasites, usually of Megachile (other hosts known outside our area). Using their sharp abdomen, the female breaks into Megachile nests (and removes eggs?) laying its own eggs on the provisions (stored pollen)(5)(6)
See Also
Print References
Baker, J. R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). University of Kansas Science Bulletin 50: 649-730.
Internet References