Abstract
Moericke traps are commonly used to monitor pests in agriculture and at the same time, they have gradually been applied in forestry. Therefore, four Moericke traps were placed in two fir stands (Valšovice, Czech Republic) to investigate the spectrum and intensity of aphidomorphic insects between 2019 and 2021. The traps were consistently positioned at a height of two meters in the monitored stands throughout the monitoring period. Each stand was evaluated separately, and their distribution differences were compared to the nearest Johnson-Taylor suction trap in the locality called Věrovany. A total of 400 samples were collected over three years, out of which 1,674 specimens belonging to 111 species or genera, classified into three families (Aphididae, Adelgidae, and Phylloxeridae), were analyzed. The eudominant species found in these stands was Phyllaphis fagi, while the dominant species was Mindarus abietinus. Additionally, 11 species or genera were identified as subdominant, 5 species as recedents, and the remaining species fell under the category of subrecessive. It means that the majority of the captured specimens was not from fir trees but from undergrowth, adjacent stands, or other woody species.
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