Comparison of contact toxicity of lamda-cyhalothrin, profenofos, acephate, spirotetramat and diafenthiuron against A. mellifera L. Each specific time interval is showing collectively mortality of tested bees at four different concentrations (50 ppm, 100, 200 and 400 ppm) of tested insecticides; Tukey HSD at 0.05% of significance was performed for statistical test.