Definition of psylla in English:

psylla

Syllabification: psyl·la
Pronunciation: /ˈsilə
 
/
(also psyllid /ˈsilid/)

noun

Entomology
A minute insect of a family (Psyllidae) that comprises the jumping plant lice.
More example sentences
  • The esters are lethal - almost immediately - to nearly all the mites and soft-bodied insects such as whiteflies, aphids, thrips, and pear psylla that they contact.
  • The lid, sides, and floor of each container were examined for pear psylla, predatory insects, and spiders.
  • Nymphs, or immature psylla, spend much of their time immersed in a droplet of sticky honeydew and only move out of it to prepare for the adult stage.

Origin

late 19th century: from modern Latin Psyllidae (plural), from Greek psulla 'flea'.

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