Century Dictionary and Cyclopedia
- n. The popular name of the homopterous insects of the family Psyllidæ, resembling in general appearance the aphides or true plant-lice, but distinguished by the difference in the fore wings, which have a distinct marginal vein. In the larval state the flealice feed on the leaves or tender stems of various plants. A few species are also called
gallmakers. To these belongs the genus Pachypsylla (Riley), which is distinguished from Psyllaproper by the very convex head, oval frontal lobes, and short antennæ. Pachypsylla celtidis-mamma infests the hackberry (Celtis), the larvæ producing bud-like galls on two-year-old twigs. Another genus is Trioza. The flealice are also called jumping plant-lice, from their habit of leaping.
GNU Webster's 1913
- n. (Zoöl.) A jumping plant louse of the family
Psyllidæ, of many species. That of the pear tree is Psylla pyri.
“The most serious are: (1) the rust or blight, for which there is no cure but carefully pulling and burning the plants as fast as infested; (2) the blackberry-bush borer, for which burn infested canes; and (3) the recently introduced bramble flea-louse, which resembles the green plant-louse or aphis except that it is a brisk jumper, like the flea-beetle.”
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