Comparing pest survey methods through detection probability: seasonal and abundance-dependent detection of spotted lanternfly (Lycorma delicatula, Hemiptera: Fulgoridae)

Timed visual search and two tree-based trap types for spotted lanternfly (Lycorma delicatula) show strong seasonal shifts in detection probability across Pennsylvania plots.

• Why it matters: Survey data for invasive pests can be biased by imperfect detection, and managers need detection-aware guidance to compare methods and plan control.
• What they did: Over two growing seasons, the study repeatedly assessed 5-minute timed visual search, BugBarrier sticky band traps, and modified circle traps in 5×20 m plots across core-to-margin areas of five satellite populations in Pennsylvania.
• The result: A hierarchical Bayesian model estimated timed visual search detection for plots with ten individuals as 10%–53%, while BugBarrier and circle traps on Ailanthus altissima (DBH 20 cm, N=10) yielded 33%–99% and 28%–84%, respectively.

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