 When encountering J. queenlandicus , P. fimbriata often first notices chemical cues on J. queenlandicus ′ silken safety lines and then looks for its prey . The smell makes P. fimbriata to quicker to see the prey , : 6 , 12 possibly by lowering thresholds in the visual system . : 36 – 37 Sometimes P. fimbriata cannot see J. queenlandicus through the prey 's camouflage , and " hunts by speculation " , jumping high in the air , so that J. queenlandicus betrays itself by turning and looking for the disturbance . : 6 : 749 P. fimbriata then turns toward J. queenslandicus and waves its palps . : 1601 It appears that only P. fimbriatas from Queensland behaves this way while Portia species from other areas did not , that P. fimbriata from Queensland reacts this way only to J. queenslandicus , and that J. queenslandicus perceives no chemical warnings that P. fimbriata is around . : 749 
