**Figure 2.** **Effects of metformin on larval weight, fecundity, pupal weight, cocoon weight, and cocoon-shell ratio.** (**A-A’**) Larval weights measured daily from L3D1 to L5D6. Bars and symbols depict the mean + SEM, n=5. (**B**) Fecundity. Bars depict the mean + SEM, n=6. (**C**) Female pupal weight, (**D**) cocoon weight, and (**E**) cocoon-shell ratio. Horizontal bars depict the mean ± SEM, n=61. (**F**) Male pupal weight, (**G**) cocoon weight, and (**H**) cocoon-shell ratio. Horizontal bars depict the mean ± SEM, n=75.