New-world-bees
Guides
Augochlora
green sweat bees
Augochlora is a genus of small, metallic sweat bees in the family Halictidae, comprising approximately 127 valid species distributed from southern Canada to Argentina. The genus exhibits remarkable social flexibility, with most species showing facultative eusociality while at least one species, Augochlora pura, is exclusively solitary. Members nest primarily in decaying wood, though some species utilize soil. The genus is divided into three subgenera: Augochlora s. str., Oxystoglossella (formerly Oxystoglossa), and the extinct Electraugochlora known from Miocene Dominican amber.
Centridini
oil-collecting bees, oil bees
Centridini is a tribe of large apid bees distinguished by specialized adaptations for collecting floral oils, often from plants of the family Malpighiaceae. Many species possess modified leg structures—either combs of flattened, blunt bristles or velvety pads—for gathering oils, which are used in nest construction and cell provisioning. The tribe includes ground-nesting and cavity-nesting solitary bees with diverse nesting behaviors across the Americas. Members exhibit notable thermal tolerance, with some desert species remaining active at high temperatures when other bees are inactive.
Diphaglossinae
Diphaglossinae is a subfamily of solitary bees in the family Colletidae, comprising nine genera and over 130 described species. The group is primarily distributed in the New World, with species found in Argentina, Chile, and other regions of South America. Nesting biology has been documented for several species, revealing distinctive architectural patterns including vertical brood cells with curved necks and main tunnels oriented vertically in soil or horizontally in banks. Some species exhibit gregarious nesting behavior, while others forage in dim light conditions.
Emphorini
Chimney Bees
Emphorini is a tribe of solitary, ground-nesting bees within the family Apidae. Members are characterized by narrow pollen preferences, with many species exhibiting oligolecty (specialized pollen collection from a restricted range of plant taxa). Nesting behavior varies: some species carry water to soften hard soil during excavation, while others do not. The tribe includes approximately nine genera distributed primarily in the New World, with an amphitropical distribution pattern in some genera.