Table 1.

Scaling of metathoracic femur mass, extensor tibia muscle mass, femoral exoskeleton mass, and metathoracic leg length with body mass across instars of S. americana (N=196)

Log variableSlope (s.e.m.)Upper 95% C.L.Lower 95% C.L.Intercept (s.e.m.)r2
Femur mass (mg)1.046 (0.007)1.0591.032-1.117 (0.019)0.99
Extensor tibia muscle mass (mg)1.006 (0.007)1.0200.992-1.06 (0.019)0.99
Femoral exoskeleton mass (mg)1.470 (0.013)1.4961.444-3.305 (0.037)0.98
Leg length (mm)0.375 (0.006)0.3870.3630.156 (0.016)0.96
  • All equations are in the form: log variable = intercept + slope (log body mass).