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Project Noah Nature School
Pollinating a flower
(Psithyrus) citrinus.
(Subfamily Bombinae) in the genus,
Male cuckoo bumble bee found resting on fireweed (Epilobium angustifolium) in ...
) in the genus, Psithyrus, are parasites of ...
bumblebees (Bombus (Pyrobombus) and
, Psithyrus, but are now usually treated as ...
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