Bombus fernaldae

Bombus fernaldae, the Fernald's cuckoo bumblebee, is a species of cuckoo bumblebee having only males and queens, but no worker bees. The females place their eggs in the nest of the confusing bumblebee (Bombus perplexus) or the red-belted bumblebee (Bombus rufocinctus), which raise the larvae. Fernald's cuckoo bumblebees visit flowers of Potentilla, Rubus, clovers, and goldenrods.^[2]

Fernald's cuckoo bumblebee
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Apidae
Genus:	Bombus
Subgenus:	Psithyrus
Species:	B. fernaldae
Binomial name
Bombus fernaldae (Franklin, 1911)[1]