Morphological and genetic evidence supports the separation of two ants (Formicidae, Dolichoderinae) from the Atlantic Forest biome.

The taxonomic boundaries of many Neotropical ant species of the genus are still unclear. and are two morphologically similar taxa which occur sympatrically in the southern Atlantic Forest of Brazil. Some characters such as the scape length and head shape suggest that these taxa may be different species. We used DNA analysis and morphological evidence, including scanning electron microscopy, to evaluate the taxonomic validity of these taxa. We found distinct morphological characteristics that allow separating them as two different species, and , and this decision is supported by the DNA results, where was recovered as a lineage independent of .