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Definition of Psithyrus
1. Noun. A large bee that resembles the bumblebee but lacks pollen-collecting apparatus and a worker caste.
Exact synonyms: Genus Psithyrus
Generic synonyms: Arthropod Genus
Group relationships: Apidae, Family Apidae
Member holonyms: Cuckoo-bumblebee
Generic synonyms: Arthropod Genus
Group relationships: Apidae, Family Apidae
Member holonyms: Cuckoo-bumblebee