Fig. 2

Photos showing the two-jar bed net assembly used in the two behavioral assays. The two-jar assembly before the sandwiched bed net was trimmed (a). The blood meal-seeking assay in its vertical orientation, showing unfed C. lectularius at the starting point in the bottom jar and fed bed bugs in the top jar that abuts the blood feeder (b). The aggregation-seeking assay in the horizontal orientation, with fed bed bugs placed in the exposed jar (left) and the target aggregation jar (right) containing a section of conditioned (feces- and aggregation pheromone-laden) file folder paper and darkened with aluminum foil (c)