Fig 2. Mean proportion western corn rootworm adult mortality (± SE) at diagnostic concentration (LC₉₉) of field populations and a susceptible non-diapause population in 2014 and 2015 bioassays for the insecticides bifenthrin, tefluthrin, and DDT.

N = at least 10 reps of 10 beetles per bioassay; LC₉₉: Bifenthrin = 0.77 μg/vial; Tefluthrin = 0.60 μg/vial; DDT = 6.02 μg/vial. Within insecticides, means with the same letter above bars are not significantly different (LSmeans test, p>0.05). Bifenthrin data for 2014 taken from Pereira et al. (2015).