Cuckoo bumblebee (Psithyrus insularis) searching for pollen and nectar on sneezeweed (Dugaldia hoopsii). From Wordnik.com. [Bumblebee] Reference
Instance the Psithyrus, who lives at the expense of the. From Wordnik.com. [The Mason-Bees] Reference
Cuckoo bumblebee (Psithyrus insularis) searching for pollen and nectar on sneezeweed. From Wordnik.com. [Featured Articles - Encyclopedia of Earth] Reference
So, for instance, the Psithyrus is extremely like the Bumble-bee, whose parasite and descendant she is. From Wordnik.com. [The Mason-Bees] Reference
It is Psithyrus or cuckoo bumble bee. From Wordnik.com. [Archive 2009-09-01] Reference
Psithyrus in nests of. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
Apathus (= Psithyrus) lives in the nests of. From Wordnik.com. [More Letters of Charles Darwin — Volume 1] Reference
Psithyrus. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
Psithyrus) row 1, cell 3. From Wordnik.com. [CreationWiki - Recent changes [en]] Reference
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