 If a P. schultzi female is mature , a male P. schultzi will try to copulate with her , or cohabit with a subadult female and copulate while she is moulting . They usually mate on a web or on a dragline made by the female , and P. schultzi typically copulates for about 100 seconds , while others in the genus can take several minutes or even several hours . Females try to kill and eat their mates during or after copulation , and subadult females mimic adult females to attract males as prey . Contests between Portia females are violent , and embraces in P. schultzi typically take 20 to 60 seconds . Sometimes , one female knocks the other on her back and the other may be killed and eaten if she does not right herself quickly and run way . When hunting , P. schultzi mature females emit olfactory signals that reduce the risk that any other females , males , or juveniles of the same species may contend for the same prey . 
