These bees are solitary ground-nesters, but they often nest in aggregations. Their nests are shallow and often have turreted (chimney-like) entrances. These bees usually fly in the morning and early afternoon. Each cell is provisioned with a nectar and pollen mixture and a single egg. Larvae hatch and turn into pupae. After a period of inactivity, adult bees emerge.
- The Great Sunflower Project: Diadasia (L. Schonberg, M. Vaughan, and G. LeBuhn, The Great Sunflower Project)
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