| Summary: | The new genus <em>Kempfidris</em> gen. nov. is described based on the workers of a single species, <em>K. inusualis</em> comb. nov., from Brazil, Ecuador, and Venezuela. <em>Kempfidris inusualis</em> comb. nov. was originally described by Fernández (2007) and provisionally placed in <em>Monomorium</em> awaiting a better understanding of the internal relationships in Myrmicinae. <em>Kempfidris</em> gen. nov. has a series of distinctive morphological characters including the mandibular configuration, vestibulate propodeal spiracle, propodeal carinae, and cylindrical micro-pegs on the posteromedian portion of abdominal tergum VI and anteromedian portion of abdominal tergum VII. This last trait appears to be autapomorphic for the genus.
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