The present catalogue of the ants (Hymenoptera, Formicidae) of Bulgaria is made on a base of critical
reconsideration of literature (covering the period from 1892 till 2009 and part of 2010) as well as on
examination of the authors' and several museum's collections. A lot of data were omitted in the previous
Bulgarian monograph on ants, lots of new data were recently added and many important additions and
alterations were made due to taxonomic revisions of Eurasian Formicidae during the last three decades.
Two new species are reported for the country [Temnothorax graecus (Forel, 1911) and Temnothorax cf. korbi
This catalogue contains a list of 163 ant species belonging to 40 genera of 6 subfamilies now known
from Bulgaria. Synonyms and information on the previously reported names in relevant publications are
given. Known localities of the species are grouped by geographic regions. Maps with concrete localities or
regions for each species were prepared. The conservation status of 13 ant species is given as they are includ-
ed in IUCN Red List of Threatened Species and Bulgarian Biodiversity Act. In comparison with adjacent
Balkan regions the ant fauna of Bulgaria is quite rich and its core is composed of South European elements.