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A minute insect of a family ("Psyllidae") that comprises the jumping plant lice.
- ‘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.’
- ‘Pear psylla overwinters in the adult stage as a distinct morphological phenotype, the winterform, which began appearing in pear orchards of the study area in early September.’
- ‘Homoptera were composed primarily of aphids and psyllids, including pear psylla, Cacopsylla pyricola, a pest of pears.’
Late 19th century: from modern Latin Psyllidae (plural), from Greek psulla flea.
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