New Records of an Extremely Rare Aquatic Empidid Fly Chelifera polonica Wagner and Niesiolowski, 1987 (Diptera: Empididae: Hemerodromiinae) from Poland. (2012). Journal of the Entomological Research Society, 14(2), 99-103. https://entomol.org/journal/index.php/JERS/article/view/453