This is a primitive tribe, thought to be the sister taxa to all other tribes in the Megachilinae. Nests are typically in dry wood.
Subgenus Lithurgopsis Fox
This subgenus contains species that are specialists on Cactaceae.
County Records: Alachua, Brevard, Clay, Highlands, Madison, Martin, Miami-Dade, Putnam, Suwanee, Volusia
Locations: Cocoa Beach
Dates: March 3-June 27; March: 1, April: 13, May: 5, June: 2; Mitchell records Jan.-July in Florida
Plants: oligolege of Opuntia; possibly other Cactaceae.