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Psyllina spec..jpg
Uncertain species
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Superfamily: Psylloidae
Family: Psyllidae
Genus: Psylla
Geoffroy, 1762

Psylla (from the Greek psulla, meaning flea) is a genus of sap-sucking insects belonging to the order Hemiptera. Twelve species are within the genus, each with a specific host. Some harmful species commonly known as flies belong to neighbouring genera, such as Cacopsylla (which includes most of the pyslla harmful to fruit trees), the Albizia fly (Acizzia jamatonica, from the Psyllidae family) and the laurel fly (Trioza alacris).