О видовой принадлежности корневой свекловичной тли (Homoptera, Aphidoidea)

Abstract

Pemphigus fuscicornis Koch is often mixed with other aphids in particular with P. lichtensteini T u l l g r. Our experiments, however, proved a complete absence of food relation between P. lichtensteini and the beet. The progeny of the P. lichtensteini T u l l g r. winged migrants from poplars gets acclimatized only to annual Euphorbia falcata L. Aphids from Euphorbia falcata L. in their turn cannot infect the beet. So, measures for P. fuscicornis K o c h control should be carried out taking into account the fact of its absolute isolation from P. lichtensteini T u l l g r.