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Noun1.Psithyrus - a large bee that resembles the bumblebee but lacks pollen-collecting apparatus and a worker caste
arthropod genus - a genus of arthropods
Apidae, family Apidae - honeybees; carpenter bees; bumblebees
cuckoo-bumblebee - a bee that is parasitic in the nests of bumblebees
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References in periodicals archive ?
Franklin (1913) provided one of the earliest accounts of bumble bees in Texas and listed the following seven species and subgenera for the state, B.(Bombias) auricomus, B.(Thoracobombus) fervidus, B.(Cullumanobombus) fraternus, B.(Cullumanobombus) griseocollis, B.(Thoracobombus) pensylvanicus, B.(Thoracobombus) sonorus, and B.(Psithyrus) variabilis.
Habitat quality of field margins in a Finnish farmland area for bumblebees (Hymenoptera: Bombus and Psithyrus).
normanii, both pollinated specifically by males of Bombus (Psithyrus) vestalis (Paulus & Gack, 1995; Gogler et al., 2009).