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Field trials investigating the effect of visual cues on catches of Musca domestica (Diptera: Muscidae) at toxic targets impregnated with the female sex pheromone (Z)-9-tricosene, were conducted in a dairy and Livestock farm of Tiruvarur district . trap contain four different pattern viz longitudinal, Vertical, Spaced spots, Clustered spots were used . Maximum number of flies caught in horizontal pattern followed by clustered spot, vertical, regular spot . Flies got stuck in the glue immediately and were unable to fly again because the wings and legs were firmly trapped in the glue. The flies ultimately died after a short struggle Significant difference in the number of flies was observed in Z-9-Tricosene treated traps when compared to control traps without (Z)-9-Tricosene thus indicating the effectiveness of (Z)-9-Tricosene as an efficient lure in attracting house flies so that eco friendly pheromone based traps can be used in house fly control strategies as part of integrated pest management strategies.

Key words: Musca domestica, Z- 9 tricosene, Horizontal pattern, Vertical pattern, Regular spaced pattern, Clustered pattern