Two subgenera, Ceratinula and Zadontomerus, are known from Florida. Nesting notes: Twig-nesting, benefits from fires, agricultural development. Twigs and stems must be broken or burned before the bees can excavate nests.
Larger, head and mesoscutum punctured; metallic blue...................2
Area between notaulices of scutum polished, with few if any punctures; clypeus maculated or not…Ceratina calcarata
Apex of tergum 7 with a single, median lobe-like carina…2
Hind femur with a median triangular projection, width at this point about equal to half the length..Ceratina calcarata
County Records: Alachua, Baker, Columbia, Lake, Miami-Dade, Monroe, Okaloosa, Sarasota, Wakulla
Locations: Gainesville, Key Largo, Key Vaca, Siesta Key.
Plants: Erigeron quercifolius
County Records: Alachua, Jefferson, Leon, Levy, Marion, Okaloosa.
County Records: Alachua, Bay, Collier, Franklin, Highlands, Jefferson, Lake, Leon, Liberty, Manatee, Marion, Martin, Miami-Dade, Okaloosa, St. Johns.
Notes: Mitchell described these as separate subspecies. They have later been described as intergrading extensively in the north of Florida and are not considered subspecific.