Abstract
Wild bees (Apoidea, Hymenoptera) were trapped in potato fields, in 42 localities of 22 administrative districts of Lithuania. The data on 18 wild bee species from three families (Halictidae, Anthophoridae, Apidae) are presented. During the period of 1997–1999 the most common bee species were Anthophora furcata (48.5%) and Coelioxys rufescens (22.1%). The rare species Bombus semenoviellus (included into the Red Data Book of Lithuania) was trapped in two new localities. A few new localities of the occurrence of other four species were established. Green Funnel traps can be used for the monitoring of at least Anthophora furcata and Coelioxys rufescens.