Visual Trap for Monitoring Pear Psylla (Homoptera: Psyllidae) Adults on Pears 1

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Abstract
Several daylight fluorescent-painted rectangles, 15 by 20 cm, effectively monitored pear psylla adults on pears. Both hue and intensity of reflection appear to be important for eliciting positive response by pear psylla adults to visual traps. The greatest captures occurred for hues with reflection peaks in the 520 to 600-nm range of the spectrum, which is the same range of pear foliage itself. Captures of adult pear psylla on visual traps of most hues or shades were significantly greater than those obtained by standard limb-jarring methods. In addition, captures of pear psylla adults on lightning yellow and arc yellow traps were beller correlated with the occurrence of eggs and nymphs on pear spurs and sooty-mold blemishing on fruits than counts obtained by limb jarring.

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