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Volume 2012, Article ID 594302, 8 pages
Research Article

Distribution and Diversity of the Cryptic Ant Genus Oxyepoecus (Hymenoptera: Formicidae: Myrmicinae) in Paraguay with Descriptions of Two New Species

1Biological Evaluation Section, Royal Belgian Institute of Natural Sciences, 29 street Vautier, 1000 Brussels, Belgium
2Laboratory for Environmental Biology, The University of Texas, El Paso, TX 79968, USA
3Department of Entomology, University of Illinois, 505 South Goodwin Avenue, Urbana, IL 61801, USA
4Department of Evolutionary Biology and Ecology, Université Libre de Bruxelles, 50 Avenue Roosevelt, 1050 Brussels, Belgium

Received 2 April 2011; Accepted 19 April 2011

Academic Editor: Fernando Fernández

Copyright © 2012 T. Delsinne et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We discuss the diversity and distribution of the ant genus Oxyepoecus in Paraguay. Oxyepoecus inquilinus is recorded for the first time, and new distribution data are given for O. rastratus and O. vezenyii. Published data for O. bruchi, O. rastratus, O. reticulatus, and O. vezenyii are summarized. Two new species are described (O. bidentatus n. sp. and O. striatus n. sp.), and a key to the workers of the seven Paraguayan Oxyepoecus species is provided. At Teniente Enciso National Park, four species cooccur. This locality appears as a promising site for studies documenting the biology of this poorly known ant genus, and because of the IUCN “vulnerable“ Red List classification of O. inquilinus, the importance of the Teniente Enciso National Park for biological conservation is clearly established.