 Among P. schultzi and some other Portias, when adults of the same species but opposite sexes recognise each other, they display at 10 to 30 centimetres. Males usually wait for 2 to 15 minutes before starting a display, but sometimes a female starts a display first .: 461 Portias sometimes use "propulsive displays", with which a member threatens a rival of the same species and sex, and unreceptive females also threaten males in this way .: 343 A propulsive display is a series of sudden, quick movements including striking, charging, ramming and leaps .: 455 In P. schultzi and in some other species, contests between males usually last only 5 to 10 seconds, and only their legs make contact .: 466 Contests between Portia females are violent: 518 and embraces in P. schultzi typically take 20 to 60 seconds. These occasionally include grappling that sometimes breaks a leg, but more usually the final move is a lunge. Sometimes one knocks the other on her back and the other may be killed and eaten if she does not right herself quickly and run way. If the loser has a nest, the winner takes over and eats any eggs there .: 466-467
