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| Abstract: | Cover: The leaf beetle Gastrophysa viridula clinging to the surface of its host plant, the dock leaf (Rumex). The beetle uses both its claws and hairy adhesive pads to climb on a variety of surface profiles. Its ability to attach to rough and smooth substrates was investigated by James Bullock and Walter Federle who found that attachment performance varies as the roughness scale increase or decreases relative to the tip size of the beetle's adhesive hairs. See pages 298‐304. Photo credit: Thomas Endlein. |
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