psylla

Definitions

  • WordNet 3.6
    • n psylla small active cicada-like insect with hind legs adapted for leaping; feeds on plant juices
    • ***
Webster's Revised Unabridged Dictionary
    • n Psylla (Zoöl) Any leaping plant louse of the genus Psylla, or family Psyllidæ.
    • ***
Century Dictionary and Cyclopedia
    • n 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. It is a large group, represented in all parts of the world. P. pyri is a common pest of the pear in Europe and North America, producing two or more summer generations of naked young. From the damage it does to young blossoms in the spring, it is sometimes called the bud-blight insect, though more commonly known as the flea-louse of the pear.
    • n psylla [lowercase] An insect of this genus.
    • ***

Etymology

Webster's Revised Unabridged Dictionary
NL., from Gr. a flea

Usage

In literature:

The name of the plant louse that infests pear trees is the pear-tree psylla.
"The Insect Folk" by Margaret Warner Morley
***

In news:

Guédot said that identifying the psylla pheromone was far more difficult than it would be for other types of insects, such as moths.
***