Figure 3
From: Fog-basking behaviour and water collection efficiency in Namib Desert Darkling beetles
Hydrophobic dorsal surface of Physasterna cribripes. An example of a P. cribripes treated with Sudan III staining in order to examine if the beetles have hydrophilic zones that could facilitate the collection of water from fog. The Sudan III staining make wax covered i.e. hydrophobic areas shiny. The magnification shows the shining hydrophobic peaks of the bumps on the elytra.