 Spiders , like other arthropods , have sensors , often modified setae ( bristles ) , for smell , taste , touch and vibration , protruding through their cuticle ( " skin " ) . : 532 – 533 A Portia can sense vibrations from surfaces , and use these for mating and for hunting other spiders in total darkness . It can use air- and surface " smells " to detect prey which it often meets , to identify members of the same species , to recognise familiar members , and to determine the sex of other member of the same species . : 13 
