psylli-, psyll- (Greek > Latin: flea).psyllid, psylla:
1. A jumping plant-louse belonging to the family Psyllidae, that includes several species that damage plants by causing galls or spreading virus diseases.
2. A pest that infests pear trees. Psyllidae:
Jumping plant lice, psyllids; family containing about 1300 species of small, jumping insects resembling cicadas.
psyllium, Psyllium:
[literally "little flea", because the seeds resemble fleas] 1. An annual plant of the plantain family that is native to Europe and Asia and has dense spikes of small flowers.
2. The seeds of psyllium, used as a mild laxative or as a dietary source of fiber. psylloid:
Similar to or like a flea.
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