With the help of scanning electronic microscope and optical microscope,the micro-adhesive systems of house ants are observed and studied experimentally,especially for the adhesive mechanisms on clean glass sheets and the climbing behaviors on glass sheets or wax surfaces with different surface roughness or tilted angles.Experimental observations show that the adhesion of ants depends largely on an arolium,which can extend freely.The surface roughness and tilted angles of glass sheets have no obvious effects on ants’ climbing behaviors.However,ants’ adhesion ability decreases when the tilted angle of wax surface increases,and becomes invalid beyond a critical tilted angle.
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