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Bombus sylvestris, known as the forest cuckoo bumblebee [3] or four-coloured cuckoo bee, [4] is a species of cuckoo bumblebee, found in most of Europe and Russia. [5] Its main hosts are Bombus pratorum, Bombus jonellus, and Bombus monticola. [6] As a cuckoo bumblebee, Bombus sylvestris lays its eggs in another bumblebee's nest. This type of bee ...
The Bombini are a tribe of large bristly apid bees which feed on pollen or nectar.Many species are social, forming nests of up to a few hundred individuals; other species, formerly classified as Psithyrus cuckoo bees, are brood parasites of nest-making species.
Cuckoo bumblebees are members of the subgenus Psithyrus in the bumblebee genus Bombus. Until recently, [ when? ] the 28 species of Psithyrus were considered to constitute a separate genus. [ 1 ] [ 2 ] They are a specialized socially parasitic lineage which parasitises the nests of 'true' bumblebees, resulting in the loss of the ability to ...
Bombus vancouverensis, the Vancouver Island Bumblebee, [2] is a common species of eusocial bumblebee of the subgenus Pyrobombus. B. vancouverensis inhabits mountainous regions of western North America, where it has long been considered as a synonym of Bombus bifarius, and essentially all of the literature on bifarius refers instead to vancouverensis. [3]
The bilberry bumblebee is rather small and compact, with a broad head and a short tongue. The queens have an average length of 16 mm (0.63 in), and a wingspan of 32 mm (1.3 in). [ 4 ] The corresponding lengths of the other castes are 12 mm (0.47 in) (worker) and 14 mm (0.55 in) (male). [ 5 ]
The bee lives for about two weeks before dying. The fly then pupates and spends the winter inside the bee, fully developed, before it emerges the following year. Bombus pensylvanicus is host to one "cuckoo" bumble bee species, B. variabilis. [7] Hibernating queen bumble bees are parasitized by a nematode worm, Sphaerularia bombi. This parasite ...
However, Suckley’s cuckoo bumble bees This social parasite is native to 15 states across the U.S. and obliges other bee species to raise its offspring. A New Law Protects Two Beloved Species ...
Bombus bifarius was first described by Ezra Townsend Cresson in the 1878 Proceedings of the Academy of Natural Sciences of Philadelphia. [2] It is a member of the order Hymenoptera and the family Apidae , which also includes orchid bees, honey bees, and bumblebees. [ 1 ]