Dr. Steinmann Henrik szerk.: Folia Entomologica Hungarica 22/1-11. (Budapest, 1969)

Dominant and subdominant species County Dominant species and their i<> of dominance Subdominant species and their % of dominance Dominance 56 in total Szolnok Melitta leporina PAN

ZEH 47,0 $> Andrena ovatula KIRBY 12,0 Ü Halictus malachurus KIRBY 8,8 * 62,3 Békés Melitta leporina PANZER 25,2 io Halictus simplex BLÜTHGEN 13,8 # Andrena ovatula KIRBY 12,5 # Halictus malachurus KIRBY 11,0 fc 62,5 Hajdu Melitta leporina PANZER 22,8 1° Halictus malachurus KIRBY 19,3 # Andrena ovatula KIRBY 8,0 96 Bombus terrestris LINNAEUS 6,1 i> Bombus siivarus distinct us 70GT 5,9 % 62,1 Pest Rhophitoides canus EYERSMANN 36,2 # Andrena ovatula KIRBY 30,9 Í Bombus terrestris LINNAEUS 12,1 # Melitta leporina PANZER 5,8 $> 35,0 In a previous paper (BENEDEK, 1968) we have - on the basis of their flight period - grouped the wild bees into nearly homogenous groups in biological respect as well.By application of the flight groups it is possible to ignore the species-names which fact considerably facilitates the recognition of the influence of various conditions on the pollinator population. Having worked up the above data according to flight groups (Table No. 3) it can be established that in county Szolnok the proportion of short flight, summer species, adapting themselves to lucerne, is the greatest. The proportion of the group in question in county Pest is nearly the same as in county Szolnok, however, considerably smaller in counties Békés and Hajdu. The proportion of the middle flight taxa is insignificant in all the four counties

,whereas the number of bivoltine species with a long flight period is rather signifi-