Fig. 2. Typical curvature of setae and control of attachment and detachment. (A) Lateral view of setae in the longhorn beetle Clytus arietis; note the vertical, non-adhesive orientation of the seta tips and the corrugations on the dorsal sides, which probably prevent self-matting. Scale bar, 20 µm. (B) Schematic diagrams of two possible seta orientations, convex proximal (Bi; not found in natural systems) and convex distal (Bii; typical orientation). Distally convex setae can easily switch between attachment and detachment by proximal and distal leg movements, respectively.