Fig. 1. Diagram of hypothetical interactions between the plant adhesive and the insect cuticle. (A) Cuticle with no anti-adhesive properties. (B) Epicuticle, non-wettable by the Roridula adhesive owing to the specific chemistry of the surface. (C) Microstructure preventing adhesion. (D) Easy-to-break solid layer preventing strong bonding of adhesive to the epicuticle. (E) Fluid layer providing cohesion failure. Black area, solid insect surface; dotted area, plant adhesive fluid; hatched area, plant surface; white area, fluid layer. Arrows indicate the direction of movement of the insect surface.