ocr: a Climbing Quit - Adhesive Feet Seven spot ladybird Beetles also have dry, bristle-covered feet. Claws on the ends of the feet may be effec: tive for grip- ping rough surfaces, but the bristles seem tob be responsible for enabling ladybird bee- tles (for example) to hold onto smooth sur- faces such as leaves. The bristles are. unbranched, and coarser than those of geckoes, but may likewise adhere by van der Wa als forces. Other obvious possibilities have been eliminated by experi- ment 1) the feet are dry, with: no trace of glue, 2) beetles remainattached in a vacuum, so cannot depend on sucke ...
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