Materials on bee fauna and ecology (Hymenoptera, Apoidea) of a tundra zone of Yakutia
Bee (Hymenoptera, Apoidea) fauna of a tundra zone of Yakutia was studied. There are presented data collected during several field expeditions in a tundra zone of Lower Indigirka River territory of North-Eastern Yakutia. Eight bumble bee species (Bombus Latr., 1809) and five solitary bee species (Hylaeus annulatus Linnaeus, Hoplitis tuberculata Nylander, Osmia maritima Friese, O. nigriventris Zetterstedt and O. uncinata Gerstaecker) were registered in that area. Two species (H. tuberculata and O. maritima) are recorded for tundra zone of Yakutia for the first time. There are brought some data on dispersal and ecology of solitary bees and several bumblebee species are discussed.