Estimates of absolute pest population density are critical to pest management programs but have been difficult to obtain from capture numbers in pheromone-baited monitoring traps. In this paper, we establish a novel predictive relationship for a probability (spTfer(r)) of catching a male located at a distance r from the trap with a plume reach D.
Keywords: gypsy moth; milk carton trap; pheromone plume; pheromone-baited trap; trap efficiency; trapping radius.