A new species of Typhlomyrmex from Colombia, re-description of the worker of T. clavicornis Emery, description of the worker of T. prolatus Brown, and key of known species (Hymenoptera, Formicidae)

Typhlomyrmex Mayr is a genus of small and cryptic ants of the subfamily Ectatomminae. Here, we provide taxonomic notes on the ants of the genus Typhlomyrmex Mayr from Colombia, along with the description of Typhlomyrmex encanto sp. nov. based on the worker caste, and the re-description / description of the worker caste of T. clavicornis Emery and T. prolatus Brown. Finally, we offer a key for the known species of Typhlomyrmex , and distribution maps for the three species this study focuses on.