Abstract
In the £ysogory Mts and adjacent area 126 species of Apiformes were found. Mid-forest meadows in the £ysogory Mts are populated mostly by Bombini (20 species). Apart from widely distributed species, the representatives of the following zoogeographi- cal elements were collected in this area: one xerothermic montane species (Bombus mesomelas), several boreo-montane species (Andrena lapponica, Andrena tarsata, Os- mia parietina, Bombus jonellus) and subpontic, submediterranean and subponto- mediterranean species (Colletes succinctus, Andrena decipiens, Lasioglossum subfascia- tum, Chalicodoma ericetorum, Osmia aurulenta, Ceratina cyanea, Anthophora pubes- cens). In the years 50-ies and 60-ies the number of Apiformes in the £ysogory Mts reached 150 individuals per 100 m 2 ; in the 80-ies the number of individuals was signifi- cantly lower. This condition was confirmed by a relatively low number of parasitic spe- cies (9) and by at least decuple decrease in number of Bombini.
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