Figure 6From: Identification of a self-regulatory pheromone system that controls nymph aggregation behavior of rice spittlebug Callitettix versicolor Behavioral responses of different instar nymphs of C. versicolor to solitary spittle masses and aggregation spittle masses (*Indicates p < 0.05, **Indicates p < 0.01, ***Indicates p < 0.001, Chi-square test). (a) solitary spittle mass vs. water (control); (b) aggregation spittle vs. water (control); (c) solitary spittle mass vs. aggregation spittle mass.Back to article page