Cacopsylla mali, the apple leaf sucker or apple psylla is a species of plant lice; these insects belong to the subfamily Psyllinae and are native to Eurasia and have been introduced to northern Americ

Psylla is the type genus of sap-sucking insects in the family Psyllidae. There are at least 110 described species in Psylla. Species within the genus feed on various host plants.