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New species of Cinygmula McDunnough, 1933 and larval description of Cinygmula irina Tshernova & Belov, 1982 from the Russian Far East (Ephemeroptera: Heptageniidae)

. Zootaxa, 3691(1), 135–144. https://doi.org/10.11646/zootaxa.3691.1.4