psylla

A genus of homopterous insects, typical of the family Psyllidæ, having a pointed, bent front, highly arched scutum, and strongly developed scutellum, the body smooth, naked, or finely pilose, and the extreme tip of the wing falling between the radius and the fourth vein.

[lowercase] An insect of this genus.

Any leaping plant louse of the genus Psylla, or family Psyllidæ.

Any leaping plant louse of the genus Psylla, or family Psyllidae.

small active cicada-like insect with hind legs adapted for leaping; feeds on plant juices