EN
The researches under insect consortiums as bioindicators have been conducted since the mid 70s in Department of Zoology, Silesian University. The results of researches show that aphids feed on common trees can be used as indicators of habitat condition in many regions (natural ones or of industrial activity). In order to make future researches easier (with the use of the represented method) keys to species of aphids on birches all over Poland in field and laboratory are prepared.