Evaluation of the harmfulness degree of gall midges Diptera, Cecidomyiidae on dominant trees in Eurasia and some taxonomical problems of gall midges on trees Betrachtung der Gallmucken Diptera, Cecidomyiidae an dominanten Forstgeholzen Eurasiens nach ihrem Schadlichkeitsgrad mit einigen besonderen taxonomischen Problemen

Skuhravy, V.; Skuhrava, M.

Anzeiger fuer Schaedlingskunde Pflanzenschutz Umweltschutz 69(3): 56-58

1996


Accession: 038219446

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Abstract
All gall midges species similarly as other insects developing on economically important trees and shrubs are usually designated as pests, as well as in cases if they destroy or damage their host plants or if they were found on their host plant species only several times during the last 150 years. This problem is shown here on gall midges developing on five dominant tree species. Four degree scala was elaborated for evaluation of the degree of harmfulness. The taxonomical problems of the complex of several species of the genus Resseliella and of the species Mikiola orientalis are discussed.