25.5734, 41.21394: 12 Treatments

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Messor carpathous   stat. nov.  Salata, Sebastian & B, Lech Borowiec, 2019, Preliminary contributions toward a revision of Greek Messor Forel, 1890 (Hymenoptera: Formicidae), Turkish Journal of Zoology 43 (1), pp. 52-67 : 54-64 54-64
Oncopygius distans     Beschovski, Venelin, 2012, Two genera of Long-legged Flies (Diptera: Dolichopodidae) new for the fauna of Bulgaria, ZooNotes 29, pp. 1-2 : 1 1
Strongylognathus karawajewi     Lapeva-Gjonova, Albena & Radchenko, Alexander G., 2021, Ant genus Strongylognathus (Hymenoptera, Formicidae) in Bulgaria: a preliminary review, Biodiversity Data Journal 9, pp. 65742-65742 : 65742 65742
Macrorrhyncha thracica     Bechev, D., 2010, Two New Species Of Macrorrhyncha Winnertz (Diptera: Keroplatidae) From Turkey, With Redescription Of Macrorrhyncha Thracica Bechev, Stat. N. And A Key To The Western Palaearctic Species Of The Genus, Acta Zoologica Academiae Scientiarum Hungaricae 56 (4), pp. 335-345 : 340-344 340-344
Macrocheles nataliae     Ács, A., Sutak, A. & Kontschan, J., 2016, New records of macrochelid mites and description of a new phoretic species (Acari: Mesostigmata: Macrochelidae) from Greece, Acarologia 56 (1), pp. 63-71 : 64-65 64-65
Usia lata     Gibbs, David, 2014, A world revision of the bee fly tribe Usiini (Diptera, Bombyliidae) Part 2: Usia sensu stricto, Zootaxa 3799 (1), pp. 1-85 : 36-39 36-39
Dendrobaena     Szederjesi, Tímea, Pop, Victor V., Pavlíček, Tomáš, Márton, Orsolya, Krízsik, Virág & Csuzdi, Csaba, 2018, Integrated taxonomy reveals multiple species in the Dendrobaena byblica (Rosa, 1893) complex (Oligochaeta: Lumbricidae), Zoological Journal of the Linnean Society 182, pp. 500-516 : 508 508
Strongylognathus bulgaricus     Lapeva-Gjonova, Albena & Radchenko, Alexander G., 2021, Ant genus Strongylognathus (Hymenoptera, Formicidae) in Bulgaria: a preliminary review, Biodiversity Data Journal 9, pp. 65742-65742 : 65742 65742
Titanoeca deltshevi   sp. nov.  Naumova, Maria, 2019, Description of Titanoeca deltshevi sp. n. from Bulgaria with faunistic notes on related species in the Balkans (Araneae, Titanoecidae), Zootaxa 4688 (3), pp. 420-430 : 421-424 421-424
Cerceris quadricincta     Dollfuss, Hermann, 2021, The Sphecid Wasps of the genus Cerceris LATREILLE, 1802 of the Jiři Halada collection (Suchdol nad Lužnicí, Czech Republic), from the Palearctic Region (Hymenoptera, Apoidea, Crabronidae), Linzer biologische Beiträge 53 (2), pp. 577-630 : 609-610 609-610
Trachusa integra     Kasparek, Max, 2020, Revision of the Palaearctic Trachusa interrupta species complex (Apoidea: Anthidiini) with description of four new species, Zootaxa 4728 (1), pp. 1-48 : 22-26 22-26
Cerceris stratiotes     Dollfuss, Hermann, 2018, The Sphecid Wasps of the genus Cerceris LATREILLE, 1802 of the " Biologiezentrum Linz " - Collection in Linz, Austria, from the Palearctic Region (part I). (Hymenoptera, Apoidea, Crabronidae), Linzer biologische Beiträge 50 (2), pp. 1125-1170 : 1166-1167 1166-1167