Мамонтова, В.А.; Дорошина, Л.П.
(Вестник зоологии, 1976)
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. ...