Figure 15From: Structural aspects of leg-to-gonopod metamorphosis in male helminthomorph millipedes (Diplopoda)O. gracilis adult male. Cuticle structure of trunk ring VII (front view) with a scheme of extrinsic musculature of left gonopod. SEM after the digestion of the internal soft tissues. gA, gonopod apodeme; ga, gonopod abductor muscle; gp, gonopod protractor muscle; gr, gonopod retractor muscle; tA, tracheal pouch apodeme. Scale bar 200 μm.Back to article page