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Symmorphus canadensis

National Institutes of Health

Papers overview

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2005
2005
Cavity width, provisioning and overwintering prepupal colour allow good but not perfect sorting of Symmorphus canadensis and S. cristatus.
2004
2004
3.2 mm cavities. Symmorphus canadensis and the bee Heriades carinata (at right) that builds resin cross walls in the narrowest cavities.