Table 3.

Morphological traits associated with sound production in S. borellii and S. vicinus

Tegminal muscle mass (mg) Right harp dimensions (mm or mm2)
SpeciesBody mass (g)Pronotal length (mm)Total tegminal mass (g)RightLeftTotalWidthLengthArea
S. borellii 0.952±0.203 (7)8.9±0.9 (8)0.0053±0.0001 (7)4.4±1.0 (6)4.0±0.6 (6)8.4±0.8 (6)3.2±0.3 (5)4.2±0.2 (5)6.7±0.7 (5)
0.91 (P<0.001)-0.86 (P=0.013)0.29 (P=0.58)0.18 (P=0.73)0.51 (P=0.30)
S. vicinus 0.955±0.162 (8)8.2±0.5 (8)0.0064±0.0001 (8)4.4±1.6 (8)4.1±1.4 (8)8.6±2.9 (8)3.2±0.2 (5)4.5±0.2 (5)7.2±0.6 (5)
0.93 (P<0.001)-0.37 (P=0.39)0.67 (P=0.19)0.62 (P=0.38)0.67 (P=0.25)
  • Values are means ± S.D. (N).

  • Regression of body mass (M) on pronotal length (L): S. borellii: M=189L-740; r2=0.83; P=0.004; 1,6 d.f., ANOVA; S vicinus: M=322L-1687; r2=0.87; P<<0.001; 1,7 d.f., ANOVA.

  • All Pearson—product correlations (r) are with pronotal length. Correlations were tested for significant differences from zero using one-way ANOVA.