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Jumping Spider (Portia sp.), specialising in hunting other spiders in their webs. In an example of aggressive mimicry, Portia sends vibrations through the victim's web to mimic trapped prey or a courting male. The web-owner reacts by running over to the source of the vibrations whereupon Portia launches the fatal attack, paralysing its victim with a carefully aimed bite. Portia is able to adapt is hunting strategy to different prey species. Danum Valley, Sabah, Borneo. June.