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Dear Colleagues,
a new paper is published: Taxonomic and faunistic notes on Hydrotaea unispinosa Stein, 1898 (Diptera, Muscidae)
It may be found here: https://archive.org/details/PapersOnDiptera or directly : https://ia902607.us.archive.org/27/items/ent23_3_223_225_Vikhrev_Gomyranov/ent23_3_223_225_Vikhrev_Gomyranov.pdf
One important correction have been got after publishing from Verner Michelsen: H. unispinosa was recently recorded for Europe, Sweden, we missed this publication:
Engelmark, R. & Engelmark, T.-B. 1989. Den calyptrata flugfaunan (Diptera, Calyptratae) på tre myrar vid Jokkmokk i Lule lappmark [The calyptrate fly fauna (Diptera, Calyptratae) of three fens near Jokkmokk in Swedish Lapland] Entomologisk tidskrift vol. 110 (3), s. 81-95.