Bombus fernaldae

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

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.