Weeping willow trees are among the landscape trees of many parts of Iran, including Tehran. Important pests, including the clearwing moth, Paranthrene diaphana Dalla Torre & Strand (Lep.: Sesiidae) caused damage to branches or the entire tree. In this study, attraction rate of this pest (P. diaphana) to essential oil of damask rose, phenyl acetaldehyde and acetic acid in laboratory conditions was investigated using wind tunnel and olfactometer Y figure. For this purpose, 10 adult insects in each trial in the wind tunnel or olfactometer in four replications were used (total 40 insects in each experiment). Term of each trial until determined insect’s reaction last maximum of five and 10 minutes for olfactometer and wind tunnel test, respectively. This research with two methods: wind tunnel or olfactometer, in conditions of lightness and scotophase, male and female, virgin and mating was performed separately. For analysis of data, in pwinds comparisons by a nonparametric method (Mann-whitne test) and in multi-level comparisons of the three trialed combinations the nonparametric method (Kruskal-wallis test) were used. The results showed that there is significant difference between males and females, it was also found that mating insects (male and female) more than virgin insects were significantly attracted to trialed compounds. It also catches that attraction of the insect to trials compounds is more in lightness conditions. The comparison of the three above combinations showed that is similar the amount attracted to essential oil of damask rose and phenyl acetaldehyde and significantly more than acetic acid. The same results obtained with both methods wind tunnel and olfactometer. Complementary investigations have shown that the agent is attracting this insect to damask rose due to the presence of a chemical phenyl acetaldehyde or phenyl ethyl alcohol in this essential oil. So, it can be concluded that both sexes p. diaphana especially matted females are attracted to damask rose during day. Thus damask rose was recommended as trap plant to control management of the pest.