Definition of pear psylla
: a yellowish or greenish jumping plant louse (Psylla pyricola) that is often destructive to the pear
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“Pear psylla.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pear%20psylla. Accessed 16 Oct. 2021.
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Time Traveler for pear psylla
The first known use of pear psylla was in 1892
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