American Entomological Society
Osmia pikei nests were obtained from trap nests located on downed, dead trees. Cells were placed in a linear series separated by mud partitions. Pollen provisions were of Arctostaphylos (Ericaceae) or Ribes (Saxifragaceae) pollen, with some Brassicaceae pollen. Bees overwinter as adults in the nest. Based on sex association and morphology, Osmia pikei is placed in the subgenus Monilosmia.
Cripps, C. and Rust, R. W., "Biology and Subgeneric Placement of Osmia Pikei (Hymenoptera: Megachilidae)" (1985). Co. Paper 53.
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