Über das Artenspektrum Manna erzeugender Aphiden

Identification of Manna excreting Aphids Up to now the origin of Manna in northern Iraq has not been known distinctly. As producers of the sweet excretions called Manna on oak trees were identified the following species of Aphididae:Aphis fabae Scop.,A. gossypii Glov.,Chromaphis juglandicola Kalt.,Myzocallis castanicola Bak.,Tuberculatus annulata Htg.,T. moerickei Hrl. andThelaxes sp.