25.39864, 41.650417: 10 Treatments

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Panorpa germanica subsp. rumelica     Dvořák, Libor, Georgiev, Dilian, ., P. P., P., P., W, ., P., P., P., . & ., 2017, New and interesting records of scorpion flies of the genus Panorpa Mecoptera: Panorpidae) from Bulgaria with a country checklist, Ecologica Montenegrina 15, pp. 22-25 : 22 22
Pyramica baudueri     Bezděčka, P. & Bezděčková, K., 2009, First record of Pyramica baudueri (EMERY, 1875) (Hymenoptera: Formicidae) from Bulgaria., Myrmecologische Nachrichten 13, pp. 1-2 : 1-2 1-2
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
Titanoeca flavicoma     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 : 424 424
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
Gonatocerus (Lymaenon) litoralis     Triapitsyn, Serguei V., Huber, John T., Logarzo, Guillermo A., Berezovskiy, Vladimir V. & Aquino, Daniel A., 2010, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Neotropical region, with description of eleven new species, Zootaxa 2456, pp. 1-243 : 48-53 48-53
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
Trechus cardioderus subsp. irenis     Kostova, Rumyana & Bekchiev, Rostislav, 2023, Trechus (s. str.) “ subnotatus ” species group (Coleoptera: Carabidae) in Bulgaria, Zootaxa 5264 (4), pp. 505-525 : 511 511