Waarnemingen aan de Bosmetselbij (Osmia uncinata) te Malle
Bzzz/HymenoVaria , Volume 31 - Issue 1 p. 37- 38
On 24 May 2009 the author found a nesting female Osmia uncinata, which had made a nest under the bark of a Scots pine. The bee had used finely chewed leaves of birch wildshoots as nest material.
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