What unique nesting behavior defines the Genus Anthidium?
Females collect and 'card' fine, fuzzy hairs from plants, like Lamb's Ears, to line nest cells
The Genus Anthidium is specifically set apart behaviorally within the Megachilidae family due to an unusual technique utilized by the females for nest construction. Instead of utilizing mud or leaf pieces, which are common materials for related bees, the female actively seeks out and gathers soft, fuzzy fibers or 'wool' from the surface of certain plants. She then processes or 'cards' these collected fibers, much like preparing material for spinning thread, using them extensively to line the interior walls of the brood cells she constructs, typically within pre-existing cavities. This specific provisioning and lining method is directly responsible for the common name 'carder bee' associated with this genus.
