 Populations from Los Baños and from Sagada , both in the Philippines , have slightly different hunting tactics , and Los Baños has some very dangerous prey spiders . In laboratory tests , Los Baños P. labiatas rely more on trial and error than Sagada P. labiatas in finding ways to vibrate the prey 's web and thus lure or distract the prey . : 283 – 284 Around Los Baños the web @-@ building Scytodes pallida , which preys on jumping spiders , is very abundant . All members of the genus Scytodes spit a sticky gum on prey and potential threats , and this can immobilise a Portia long enough for the Scytodes to wrap the Portia in silk and then bite it . Around Los Baños , P. labiata instinctively detours round the back of S. pallida that is not carrying eggs while with plucking the web in a way that makes S. pallida believe the threat is in front of it . P. labiata prefers to stalk a female S. pallida carrying eggs , as then S. pallida is reluctant to drop the eggs in order to spit , and in this case P. labiata sometimes uses a direct attack . In areas where S. pallida is absent , the local members of P. labiata do not use this combination of plucking other spiders ' webs to deceive the prey and detouring for a stab in the back . 
