During the growing season, psylla damage results in sticky fruit and foliage that becomes black with sooty mold.
From the sacbee.com
Experiments in pear orchards confirmed that the compound is attractive to males and can be used to bait traps to capture pear psylla.
From the sciencedaily.com
Besides luring male psylla onto sticky traps, the compound's discovery could give rise to lures for either monitoring the pest or disrupting its mating.
From the sciencedaily.com
Researchers performed chemical analyses and behavioral assays to isolate and then identify the volatile chemicals extracted from female pear psylla that were most attractive to males.
From the sciencedaily.com
Insects such as aphids, psylla and whiteflies insert their mouthparts into the part of a tree's vascular system that transports the carbohydrates produced by photosynthesis.
From the post-gazette.com
More examples
Jumping plant louse: small active cicada-like insect with hind legs adapted for leaping; feeds on plant juices