Messor mcarthuri, major lateral: specimen from Golyam Dervent vill. with intermediate characters between M. mcarthuri and M. hellenius; scale bar 1 mm.

 
  Part of: Lapeva-Gjonova A, Borowiec L (2022) New and little-known ant species (Hymenoptera, Formicidae) from Bulgaria. Biodiversity Data Journal 10: e83658. https://doi.org/10.3897/BDJ.10.e83658