Comprehensive DescriptionRead full entry
The nesting biology of this bee is described by Wcislo and Engel (1996). From Wcislo and Engel (1996) Appendeces 1 and 2: Nests in Soil. Neither turret nor nest chimney is present. Maximum depth of nest in soil is up to 50 cm. The orientation of the main axis of the nest cell is intermediate between vertical and horizontal. The cell shape is radially symmetric. A cell lining is present. Cells are arranged in the nest in clusters but with no surrounding cavity. Cells are not attached to the main tunnel with lateral tunnels. The interior face of the nest plug has a spiral. The shape of the pollen mass inside the cell is a slightly flattened sphere. The pollen mass is oriented snugly in the bottom of the cell. The pollen mass is oriented tilted slightly on its edge. The pollen mass is not coated with a secretion. The shape of the pupal fecal deposit is a flattened strip. The location of the pupal fecal deposit is restricted to the basal third of the cell. The orientation of the main tunnel in the soil is vertical. The main tunnel has subvertical branches. Pollen use is not restricted to one plant family. The nest entrance is not plugged when female(s) leave the nest. cells are not re-used. Nests are dug into horizontal ground. Social behavior, from Wcislo and Engel (1996) Table 1: Communal, based on 12 nests from near Sasabe, AZ, USA.