This is a primitive tribe, thought to be the sister taxa to all other tribes in the Megachilinae. Nests are typically in dry wood.
This genus contains species that are specialists on Cactaceae.
County Records: Alachua, Brevard, Clay, Highlands, Madison, Martin, Miami-Dade, Putnam, Suwanee, Volusia
Locations: Archbold Biological Station, Cocoa Beach, Kanapaha Prairie, Ordway-Swisher Biological Station, Paynes Prairie Preserve State Park
Dates: March - June, Mitchell records January - July in Florida
Plants: oligolege of Opuntia possibly other Cactaceae, Cirsium horridulum. Males - Calamintha ashei
Notes: