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. Turret or nest chimney is present. Maximum depth of nest in soil is up to 100 cm. The orientation of the main axis of the nest cell is vertical. The cell shape is radially symmetric. A cell lining is present. Cells are arranged in the nest evenly spaced along lateral tunnels. Cells may or may not be 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 ovoid saucer-shaped. The pollen mass is oriented snugly in the bottom of the cell. The pollen mass is not coated with a secretion. The shape of the pupal fecal deposit is cylindrical, sausage-shaped. The location of the pupal fecal deposit is restricted to the basal quarter of the cell. The orientation of the main tunnel in the soil is vertical. The main tunnel has horizontal branches. Pollen use is restricted to one plant family. The nest entrance is 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: Solitary, based on >100 nests. Nests were excavated in Lawerence and Eudora KS, and Topaz UT, USA.
Regularity: Regularly occurring
Type of Residency: Year-round
Flowering Plants Visited by Nomia triangulifera in Illinois
(observations are from Moure & Hurd and Krombein et al.; insect activity is unspecified)
Asteraceae: Grindelia squarrosa (Kr), Helianthus annuus (MH, Kr), Oligoneuron rigidum (MH), Rudbeckia triloba (MH, Kr), Silphium perfoliatum (MH); Capparaceae: Cleome serrulata (MH, Kr); Fabaceae: Medicago sativa (Kr)
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