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Figure 8


Fig. 8. Static safety factor (SBW) plotted against spider mass for pre-web first-instar A. diadematus, adult A. diadematus, and S. scenicus. Adult A. diadematus have safety factors of 4–6 whereas small individuals can have safety factors as large as 30. Note that the first-instar spiders are well below the values predicted by the scaling relationship. Safety factors for S. scenicus approach 1 for adults.