The studies were carried out over the year 2010 in a 18 years old cherry tree orchard, at S.C. Fructex S.A. Bacau. The invertebrates communities of the epigean fauna in 2010 include species belonging to 8 classes, 12 orders and 22 families with an amount of 7083 individuals. The Insect class is about 55.88% of the whole collected material. According to the relative abundance of the trophic categories, we can say that the structure of the invertebrates communities of the epigean fauna is well-balanced, the ecosystem is stable, due to the age of the cherry tree culture and on the other hand due to the lack of the chemical treatment. The study of the canopy insect pests highlighted two categories of insect pests: endophagous species, especially leafmining insects and ectophagous species, respectively aphids and ectophagous insect larvae. However, even if the frequency of attack of both endophagous and ectophagous species has recorded high values, we found that the intensity of attacks did not reach pest economic threshold.