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Subgenus Diandrena

bee for ID - Andrena - female Andrena sp?  Stuck to flower - pathogenic fungus? - Andrena Andrena sp?  Stuck to flower - pathogenic fungus? - Andrena Dark Bee in Buttercup - Andrena Bee - Andrena - male Bee - Andrena - female Dark green female bee w/ facial foveae - Andrena olivacea - female Potential Halictidae - Andrena
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
No Taxon (Apoidea (clade Anthophila) - Bees)
Family Andrenidae (Miner, Fairy, Allied Panurgine, and Oxaeine Bees)
Subfamily Andreninae (Mining Bees)
Genus Andrena
No Taxon Subgenus Diandrena
Explanation of Names
Diandrena Cockerell 1903
Numbers
25 spp., all in our area(1)
Identification
Based on the key to the subgenera of North and Central America (females) in(2): two submarginal cells; tibial scopal hairs largely simple; integument often metallic blue or blue-green; propodeum (outside of the triangle) roughened by punctures.
Range
all the spp. occur in the US, with one (A. nothocalaidis) ranging into Canada (BC) and 6 into Mexico(1)
Print References
Thorp, R. W. (1969). Systematics and ecology of bees of the subgenus Diandrena (Hymenoptera: Andrenidae). University of California Publications in Entomology 52: 1-146.