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THE BEES OF ALBERTA VII
Published online by Cambridge University Press: 31 May 2012
Extract
Female. Compared with one from Milwaukee, Wis., Sept. 27 (S. Graenicher), it differs thus: the coarsely punctured shining clypeus without a distinct median groove; tegulae very dark brown (instead of clear red) ; stigma and nervures black or almost so; third discoidal cell more produced at end; hair on anterior border of hind tarsi conspicuously yellowish; basal hair-band of second tergite very broad; the abdominal band clear white. Anterior wing 7 mm. long.
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