The teratoforming phytophagous arthropods damaging ornamental woody plants, expanded on the territory of Belarus in the current century

Abstract

During the current century the recent fauna of Belarus has been increased by 6 species of gall-forming arthropods: 2 species of eriophyoid mites (Acari: Acariformes: Eriophyidae): walnut leaf gall mite – Aceria erinea (Nalepa, 1891) and walnut blister mite – Aceria tristriata (Nalepa, 1890), and 4 insect species, boxwood psyllid –Psylla buxi (Linnaeus, 1758); Insecta: Sternorhyncha: Psyllidae, cherry plum aphid – Brachycaudus divaricatae (Shaposhnikov, 1956); Insecta: Sternorhyncha: Aphidida), black locust gall midge – Obolodiplosis robiniae (Haldeman, 1847); Insecta: Diptera: Cecidomyiidae and honey locust pod gall midge – Dasineura gleditchiae (Osten Sacken, 1866); Insecta: Diptera: Cecidomyiidae. All of them are pests of ornamental trees and shrubs in green areas and should be considered as invasive. Three species – A. erinea, B. divaricatae and O. robiniae have been already included in published in 2016 «Black book of invasive animals of Belarus». The calculations of physiological and general harmfulness of these pests of ornamental trees and shrubs under the conditions of Belarus have been made. It turned out that maximum (153 points) harmfulness degree index belongs to O. robiniae, minimum (2.4 points) – to D. gleditchiae, that goes well with distribution their host plants in green areas of Belarusian regions.