Abstract
Beating tray and D-vac sampling were compared and evaluated for their ability to estimate the phenology of insects on honeylocust ( Gleditsia triacanthos L.). The insects were honeylocust plant bug, Diaphnocoris chlorionis (Say); and the leafhoppers ( Macropsis fumipennis (Gillette & Baker), Stragania alabamensis (Baker), Empoasca fabae (Harris) (potato leafhopper), and Erythroneura clavata DeLong. The beating tray method was generally more effective in capturing early instars, which may be protected from D-vac suction by their small size and the unfolding leaflets in which they feed. The D-vac method was more effective for sampling the more active adult stage of leafhoppers. Our study illustrates the importance of evaluating the effectiveness of a particular technique for monitoring different species and different stages within a species.
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