- Psithyrus quadricolor, Lepeletier, 1832
- Psithyrus globosus Eversmann, 1852
- Psithyrus meredionalis Richards, 1928
No status defined
Value of species
One of 26 world known species of the subgenus Psithyrus (previously considered as a separate genus). One of 250 world known species of the genus Bombus, and one of 40 bumblebee species (8 cuckoo bee species among them) in the fauna of Ukraine. All species of the subgenus Psithyrus are obligate social parasites ('cuckoos') in colonies of the other social Bombus species. Females lack pollen-collecting corbiculae on the hind legs, there is no worker caste.
Distribution: Palaearctic Region.
[[Bombus quadricolor lives from the Pyrenees and the Cantabrian to the South to the middle of Fennoscandia to the North. Its Oriental limit is not well known, likely in the Altai. To the West, it barely reaches the Atlantic coast, being absent from UK. It shows several subspecies with a somewhat intricated distribution and unclear status. It inquilines B. soroeensis]].
- Iren KONOVALOVA, e-mail: email@example.com