TL;DR: Three of these strikingly new genera are based on ants collected by myself in Trinidad, British Guiana and the Anglo-Egyptian Sudan; the fourth genus is based on a Northwestern University collection made by Mr. E. C. Williams, Jr., in the Panama Canal Zone.
Abstract: Three of these strikingly new genera are based on ants collected by myself in Trinidad, British Guiana and the Anglo-Egyptian Sudan; the fourth genus is based on a Northwestern University collection made by Mr. E. C. Williams, Jr., in the Panama Canal Zone. Two, Talaridris and Acanthidris , are members of the neotropical rain forest fauna and obviously belong to the tribe Dacetonini of the subfamily Myrmicinae . The third genus, Hylidris , is Ethiopian and a member of the tribe Myrmecinini of the subfamily Myrmicinae . It was taken on the fringe of the Congo rain forest and belongs to the forest floor fauna. The fourth genus, Axinidris , also Ethiopian, is especially noteworthy because it belongs to the subfamily Dolichoderinae which contains but few genera, only one of which is endemic to the Ethiopian Region. Axinidris is a member of the arboreal rain forest fauna and belongs to a new tribe, Axinidrini .
TL;DR: Even though Colombia has high levels of ant species richness in the Neotropical region, this richness continues to increase as several factors, such as access to previously unexplored conserved areas, sampling techniques that cover heterogeneous microhabitats such as leaf litter, and many more taxonomic researches have allowed the knowledge of ant fauna in Colombia to continue growing.
Abstract: Even though Colombia has high levels of ant species richness in the Neotropical region, this richness continues to increase. New records of the ant subfamilies Amblyoponinae, Dolichoderinae, Dorylinae, Myrmicinae, and Ponerinae are presented. Two species of Fulakora, two species of Azteca, one species of Cylindromyrmex, 25 species of Myrmicinae belonging to 12 genera (Acanthognathus, Basiceros, Daceton, Eurhopalothrix, Hylomyrma, Mycetomoellerius, Mycetophylax, Mycocepurus, Octostruma, Pheidole, Rogeria, and Talaridris), and one species of Leptogenys are registered for the first time for Colombia. Five species are new records for South America. For each species, the geographical distance of the record closest to the Colombian locality is offered. Several factors, such as access to previously unexplored conserved areas, sampling techniques that cover heterogeneous microhabitats such as leaf litter, and many more taxonomic researches have allowed the knowledge of ant fauna in Colombia to continue growing.