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New and little-known species of Empis (Diptera: Empididae) from Bulgaria, Israel and Turkey, with keys to the Palaearctic Pachymeria and the Mediterranean Xanthempis

. Zootaxa. 4555, 1 (Feb. 2019), 91–100. DOI:https://doi.org/10.11646/zootaxa.4555.1.7.