What is "psylla"

Psylla \Psyl"la\, n.; pl. Psyll[ae]. [NL., from Gr. ? a flea.] (Zo["o]l.) Any leaping plant louse of the genus Psylla, or family Psyllid[ae].

n. (context zoology English) Any leaping plant louse of the genus ''Psylla'', or family Psyllidae.

n. small active cicada-like insect with hind legs adapted for leaping; feeds on plant juices [syn: jumping plant louse, psyllid]

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).