Stem-nesting-bee
Guides
Ceratina
Small Carpenter Bees
Ceratina is a cosmopolitan genus of small carpenter bees comprising over 300 species in approximately 23 subgenera. These bees nest in dead wood, stems, or pith, excavating linear galleries with partitioned brood cells. Social behavior varies widely within the genus, ranging from solitary to facultatively eusocial, with some species exhibiting cooperative brood care and others demonstrating biparental care. The genus originated in the Afrotropics and has achieved global distribution except Antarctica. Ceratina serves as an important model for studying the evolutionary origins of social behavior in insects.