A new genus of eucoiline wasps, Humboldteria, new genus is described from the Neotropical Region. The type species of the genus is H. davesmithi, new species; other new species include H. maurofrons, new species, H. kerri, new species, H. montanai, new species, and H. kojaki, new species. The phylogenetic analysis presented herein recovers the new genus in the Ganaspini, and sister-group with either Glauraspidia (Bayes analysis) or Steleucoela (parsimony analysis). Distribution maps and a key to species are provided.
