Figure 3 from: Ichiishi W, Shimada S, Motobayashi T, Abe H (2019) Completely engaged three-dimensional mandibular gear-like structures in the adult horned beetles: reconsideration of bark-carving behaviors (Coleoptera, Scarabaeidae, Dynastinae). ZooKeys 813: 89-110. https://doi.org/10.3897/zookeys.813.29236

Figure 3 Scarring of flat paraffin surfaces; T.dichotomus heads were placed in the back position to show the widths of scars. A lateral view B frontal view. Only scratches from T.dichotomus are shown.