Figure 3
From: Evolution of a neuromuscular sexual dimorphism in the Drosophila montium species group
Divergent neuromuscular sexual dimorphisms in A5 among species of the montium group. FA/FB values in the 41 species examined are shown on the phylogenetic tree. The scatter plot shows the distribution of mean FA/FB values as compared between the male and female. Each symbol represents the values estimated for a hemi-segment. The red and blue long lines represent the mean values for female and male values, respectively. The short bar represents the SEM. The blue and pink areas in the graph indicate the 99% confidence intervals (mean ± 3 × SD values) of the muscle size for males and females, respectively. The neuromuscular system in the A5 segment is sexually dimorphic (+) or sexually monomorphic (−). Courtship song-types reported in our previous paper (Chen et al.8) are indicated in the right-hand side of the plots. The song types for pre‐ and post‐mounting songs are shown separated by a hyphen (pre/post): P1–P3, pulse songs (P) distinct in certain song parameters; HPR, high pulse repetition song; S1 and S2, sine songs (S) distinct in certain song parameters; –, no song.
