Stem-nester
Guides
Ceratina arizonensis
Arizona Small Carpenter, Arizona Ceratina
Ceratina arizonensis is a small carpenter bee in the family Apidae, first described by Cockerell in 1898. It is one of numerous Ceratina species native to North and Central America. Like other small carpenter bees, it is a solitary bee that nests in pithy stems rather than excavating wood like its larger relatives in Xylocopa. The species has been documented as a pollinator of multiple flowering plant species in field studies.
Chelostoma campanularum
Small Scissor Bee, Harebell Carpenter Bee
Chelostoma campanularum is a small solitary bee in the family Megachilidae. It is a pollen specialist strongly associated with Campanula (bellflower) species. The species is notable for its distinctive pollen-collecting behavior using abdominal scopae rather than leg scopae, and for nesting in hollow plant stems.