- Apis barbutellus Kirby, 1802
- maxillosus Klug in German, 1817
- Psithyrus lugubris Kriechbaumer, 1870
- Psithyrus unicolor Kriechbaumer, 1870
- Psithyrus mixta Kriechbaumer, 1870
- Psithyrus susterai May, 1944
Barbut's Cuckoo-bee, Barbut's cuckoo bee
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: Europe and northern Asia to the Pacific.
The species is widespread but often not common, of medium body size, emerging in late spring.
Breeds in colonies of Bombus hortorum.
Bombus barbutellus has a distribution extending from S.Spain (?) to the South to mid-Finland to the North and from Ireland to the West to Far-East of Russian to the East. It inquilines mainly B. hortorum, B. ruderatus and B. argillaceus but it is much rarer than its hosts. Most data are ancient.
There are two subspecies that have been considered as two separated species by most authors. Lecocq et al. 2011 demonstrated that they are conspecific. The ssp. barbutellus is more abundant in the north of the distribution, while maxillosus occurs mainly in the south]].
- Iren KONOVALOVA, e-mail: firstname.lastname@example.org