 Before courtship , a male Portia spins a small web between boughs or twigs , and he hangs under that and ejaculates on to it . : 467 He then soaks the semen into reservoirs on his pedipalps , : 581 @-@ 583 which are larger than those of females . : 572 @-@ 573 Females of many spider species , including P. schultzi , emit volatile pheromones into the air , and these generally attract males from a distance . : 517 : 36 
