EditorialPsylla, Print, Psylla (from the Greek psulla, meaning flea) is a genus of sap-sucking insects belonging to the order Hemiptera. There are at least 110 described species in Psylla. Species within the genus feed on various host plants.
EditorialPsylla, Print, Psylla (from the Greek psulla, meaning flea) is a genus of sap-sucking insects belonging to the order Hemiptera. There are at least 110 described species in Psylla. Species within the genus feed on various host plants.
EditorialAlder psylla, Psylla alni, adults, and nymphs covered in waxy secretions on leaves. Handcoloured lithograph from Georg Friedrich Treitschke's Gallery of Natural History, Naturhistorischer Bildersaal des Thierreiches, Liepzig, 1842.