marginally significantP = 0.0457
When the data were analyzed in terms of sampling date, the traps showed a marginally significant difference on August 19 (χ2 = 6.2, df = 2; P = 0.0457) and September 2 (χ2 = 6.0, df = 2, P = 0.0495) but not on August 10 (χ2 = 2.9, df = 2, P = 0.2301) and August 26 (χ2 = 0.00, df = 2; P = 1.0000) (Fig. 2 b).