Catalogue of the ants (Hymenoptera, Formicidae) of Bulgaria Lapeva-Gjonova, Albena Antonova, Vera Radchenko, Alexander G. Atanasova, Maria ZooKeys 2010 62 1 124 Mueller, 1923 Mueller 1923 Insecta Formicidae Temnothorax GBIF Animalia Temnothorax sordidulus Hymenoptera 17 18 Arthropoda species sordidulus  Records (Map 34): Western Predbalkan: Cherven bryag ( Seifert 2006); Western Stara Planina Mts: Lakatnik, Dragoman, Tri ushi, Tompsan ( Seifert 2006).