Abstract
Gall midges of the genera Trotteria and Verbasciola of the supertribe Lasiopteridi are inquilines. The widespread genus Trotteria includes 28 species developing in galls of 30 species of gall midges; 24 species develop in galls of Asphondyliidi. Gall midges-hosts and inquilines were found on 57 plant species of 17 families. The Palaearctic genus Verbasciola comprises three species that have been recorded in galls of three gall-midge species damaging three plant species. Seven new species are described, Trotteria coronillacola, T. perkovskii, T. cytisiphila, T. kalininae, T. jigulensis, Schizomyia samaralukensis, and Verbasciola volgensis. The diagnoses of the genera were corrected. Trotteria spinosa Kovalev is restored from the synonyms of T. umbelliferarum Kieffer. Data on the distribution of all the species examined and their associations with host gall midges and taxonomic groups of plants are given.
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