Key to New World Eurhopalothrix

This worker key is based on Longino J. T. 2013. A review of the Central American and Caribbean species of the ant genus Eurhopalothrix Brown and Kempf, 1961 (Hymenoptera, Formicidae), with a key to New World species. Zootaxa. 3693:101-151. doi:10.11646/zootaxa.3693.2.1

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 * Face, dorsal mesosoma, and first gastral tergite covered with uniform ground pilosity of appressed spatulate setae, lacking dif-ferentiated erect or suberect setae projecting above ground pilosity; posterior face of propodeum with broad, rectangular lamella, not differentiated into acute propodeal spine; HW < 0.5 (Argentina) . . . . . Eurhopalothrix bruchi


 * Face, dorsal mesosoma, and first gastral tergite with thin, non-spatulate ground pilosity or, if with conspicuous spatulate ground pilosity, then accompanied by differentiated larger suberect to erect spatulate setae; posterior face of propodeum as above or with distinct acute propodeal spines; HW variable . . . . . 2