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Vikberg, V. and Viitasaari, M. 1991. <i>Trichiosoma nanae</i> sp. n., a monophag on <i>Betula nana</i> from Finland (Hymenoptera, Cimbicidae). Entomologica Fennica. 2, 2 (Jun. 1991), 67–77. DOI:https://doi.org/10.33338/ef.83537.