 When not hunting for prey or a mate , Portia species , including P. schultzi , : 31 adopt a special posture , called the " cryptic rest posture " , pulling their legs in close to the body and their palps back beside the chelicerae ( " jaws " ) , which obscures the outlines of these appendages . When walking , most Portia species have a slow , " choppy " gait that preserves their concealment : pausing often and at irregular intervals , waving their legs continuously and their palps jerkily up and down , moving each appendage out of time with the others , : 6 and continuously varying the speed and timing . : 418 P. schultzi uses what Forster and Murphy ( 1986 ) call a " lolloping " gait , : 34 @-@ 35 flexing and stretching the legs . They suggest that the long legs are advantageous for moving through webs , and that lolloping enables P. schultzi to use the long legs while keeping the body near the surface . : 34 
