SEASONAL MONUMENTAL INSECTS ACCOMPANYING EUPHRATES POPLAR LEAVES

The study was conducted in the poplar field belonging to Department of Plant Protection, College of Agriculture and Forestry, University of Mosul in the autumn season 2018-2019, where it was found that the leaves of the Euphrates poplar have more than one type of insect that infects the leaves, including Egerirotriaza ceardi (Berg.) (Psyllidae, Homoptera) poplar leaves, this was evidenced by the symptoms of the infection it causes, which are spotting and galls. The highest infection was recorded in the first week of January 2019, with an average of (70.71) symptoms reported, and the highest average infection was recorded on the eastern side with an average of (41.23) symptoms, although the study showed the highest average of the spots resulting from the infection reached (95.33) spot recorded in the first week of January 2019, on the upper and lower surface of leaves on the western side of the tree, while the highest average of (26.33) galls was recorded on the upper surface of the leaf from the southern side in the last week of January 2019, on the upper and lower surface of the leaves and on the western side of the tree, while the highest average of (26.33) galls was recorded on the upper surface of the leaf from the southern side in the last week of January 2019, where the study showed that there is a negative significant correlation between the temperatures of that autumn season with The insect numerical density (-0.747) at a significant level (p<.0001), This is due to the low temperatures for the period from 4/12/2018 to 23/1/2019, which ranged between (13.8 - 7.11 ° C), while the relative humidity averages did not have a significant correlation with the insect's numerical density, which ranged between (51.43 - 61.14%) As for the second insect, it was an insect the poplar leaves aphid Chaitophorus sp. (Aphidae; Homoptera). As the highest average density of an insect reached (48) insects on the lower surface of leaves from the northern side in the first week of December, 2018 ,where the correlation of the density of aphids with positive mean temperatures was high (0.841) at a significant level of 0.001 and negative with mean relative humidity (-0.41), As for the third insect, the Gypsonoma hapalosarea (Tortricidae Lepidoptera) was the highest average (1.0) one in the second week of December 2019 on the northern side of the insect and the total of the insect bond is (22) insect for the autumn season. From the northern side with 7 insects, and that the first week of January recorded the highest infection (7) insects also.