Figure 1. The effect of distribution of flour among four artificial refugia [four different amounts of flour (0.25, 0.10, 0.04, and 0.01 gm, respectively); four equal amounts of flour (0.10 gm in each refugia); one refugia with 0.40 gm flour] on Tribolium castaneum oviposition and on occupation of different refugia by males and females..