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Biology of Osmia (Osmia) ribifloris Cockerell (Hymenoptera: Megachilidae)

R. W. Rust
Journal of the Kansas Entomological Society
Vol. 59, No. 1 (Jan., 1986), pp. 89-94
Stable URL: http://www.jstor.org/stable/25084741
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Biology of Osmia (Osmia) ribifloris Cockerell (Hymenoptera: Megachilidae)
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Abstract

Osmia (Osmia) ribifloris Cockerell, a megachilid bee, nests in existing holes and constructs nests with cells in a linear series. Cell partitions and nest plugs were formed of masticated plant materials. Pollen-nectar masses were lopsidal cylinders composed of 100% Berberis repens Lindles (Berberidaceae) pollen. Eggs were placed on the anterior, dorsal surface of provisions and development time from egg to adult was 68 to 84 days for laboratory reared individuals. Adults overwinter inside of cocoons. Biologies of 9 other Osmia (Osmia) are compared and contrasted with O. ribifloris; most species are remarkedly similar in their nesting biologies.

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