TO THE KNOWLEDGE OF PLANT PARASITIC NEMATODES OF DONBASS: HELICOTYLENCHUS DIGONICUS PERRY, 1959 (TYLENCHIDA: HOPLOLAIMIDAE)

As a result of the studies of plant-parasitic nematodes of trees and shrubs on the territory of Donetsk otanical B Garden for the first time for Donbass and Ukraine was recorded Perry, 1959 Helicotylenchus digonicus (Tylenchida: Hoplolaimidae) – polyphagous root semi-endoparasite. The paper contains description, morphological and morphometric characteristics of recorded populations, trophical associations, and brief data on the distribution, biology, ecology and harmfulness of the species. The morphometrics of the Donbass populations generally are in agreement with topotypes, but in comparison with other populations regional isolates has some differences. The species is the dominant among all plant-parasitic nematodes. It was found in the rhizosphere of 29 species of plants. The highest population density was recorded on L., Fraxinus excelsior Juglans regia Robinia pseudoacacia Tilia europaea L., L. and L.UDC 632.651:591.531.1(477.62