Ukrainian Journal of Forest and Wood Science

A decrease in physical activity of affected trees helps to populate them with representatives of the harmful entomofauna, damaging vegetative and generative organs of Ulmus sp. Total number of phytophage insects that trophically associated with elm stands exceeds 50 names and no more than 20 among them are of the greatest potential and actual threat. As a rule, such trees are intensively populated by phytophages of other trophic groups – by tree trunk xylophage pests and other phytopathogens. A detailed analysis of the harmful entomofauna and pathological changes caused by insects on trees genus Ulmus L. is provided. Harmful entomofauna representatives which activity significantly weakens growth, development and reduces qualitative characteristics of elm wood are described. The research of infectious pathology indicates the explicit role of phytophage insects, which are directly or indirectly ecologically and trophically associated with Ulmus L., being vectors in the spread and accumulation of an infectious background.

harmful etnomofauna, pathogenesis, incidence of diseases, tree damage, harmfulness