On the morning of 7 July 1979 at the Yorkshire Naturalists' Union's field meeting in Dallowgill (SE/1971), I was fortunate to find and excavate two nests of the mining bee Lasioglossum calceatum. The nests were in a path just outside the woodland so that the soil around the nests would be warmed by the sun for a part of each day. The nest entrances were open but each wa surronded by a mound ofexcavated soil.
Archer, Michael E., "The Mining Social Bee, Lasioglossum Calceatum (Scopoli) (Hymenoptera: Halictidae) in Dallowgill, Yorkshire)" (1980). An. Paper 29.
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