A New Ant Species of Oxyepoecus (Hymenoptera: Formicidae: Myrmicinae), with the Description of Oxyepoecus Browni Gyne and New Records for the Genus

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A New Ant Species of Oxyepoecus (Hymenoptera: Formicidae: Myrmicinae), with the Description of Oxyepoecus Browni Gyne and New Records for the Genus

Volume 52(14):167‑173, 2012 A NEW ANT SPECIES OF OXYEPOECUS (HYMENOPTERA: FORMICIDAE: MYRMICINAE), WITH THE DESCRIPTION OF OXYEPOECUS BROWNI GYNE AND NEW RECORDS FOR THE GENUS 1,2 MÔNICA A. ULYSSÉA 2 CARLOS R.F. BRANDÃO ABSTRACT We describe a new species of Oxyepoecus Santschi, 1926, Oxyepoecus regularis sp. nov., based on workers and a gyne collected in “Caatinga Arbórea” (Arboreal Shrubland) in Milagres and “Mata Seca” (Dry Forest) in Boa Vista do Tupim, both in the state of Bahia, Brazil. The gyne of Oxyepoecus browni Albuquerque & Brandão, 2004, collected in the same leaf litter ant survey, is also described. In addition, we present new records for Oxyepoecus species in Northeastern Brazil. Key-Words: Formicidae; Hymenoptera; Oxyepoecus regularis sp. nov.; Northeastern Brazil; Oxyepoecus browni gyne; Caatinga. INTRODUCTION from Paraguay (Delsinne et al., 2012) takes the num- ber of known species in the genus to 20. The genus The exclusively Neotropical ant genus Oxy- can be separated into two informal species groups (Al- epoecus belongs to the Myrmicinae and to the Solenop- buquerque & Brandão, 2004, 2009) recognized by the sidini tribe. Myrmicinae is a cosmopolite subfamily following combination of character’s states: with the highest local and global species richness, espe- cially in the Neotropical and Indo-Australian regions Vezenyii group – smooth and shining cephalic dorsum; (Albuquerque & Brandão, 2004, 2009). The Solenop- sculpture, if present, restricted to the anterior portion sidini currently includes 20 genera (two incertae sedis) of genae and between the frontal carinae, where the and 840 recognized species (133 subspecies) (Bolton, costulae may prolong caudad into two patches, always 1995, 2003; Albuquerque & Brandão, 2004, 2009; separated by a smooth median stripe. This group in- Delsinne et al., 2012). Workers of Oxyepoecus can be cludes Oxyepoecus browni Albuquerque & Brandão, distinguished from all other solenopsidines by the 2004; O. bruchi Santschi, 1926; O. crassinodus Kempf, 11-segmented antennae and the three funicular seg- 1974; O. ephippiatus Albuquerque & Brandão, 2004; ments at the apical club (Kempf, 1974; Bolton, 2003). O. inquilinus (Kusnezov, 1952); O. kempfi Albuquer- The last reviews of the genus Oxyepoecus added que & Brandão, 2004; O. longicephalus Albuquer- seven species (Albuquerque & Brandão, 2004, 2009). que & Brandão, 2004; O. punctifrons (Borgmeier, The recent description of two new Oxyepoecus species 1928); O. quadratus Albuquerque & Brandão, 2004; 1. Programa de Pós-Graduação em Zoologia da Universidade Estadual de Feira de Santana. E-mail: [email protected] 2. Laboratório de Hymenoptera, Museu de Zoologia, Universidade de São Paulo. Caixa Postal 42.494, 04218-970, São Paulo, SP, Brasil. E-mail: [email protected].

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Hymenoptera: Formicidae: Myrmicinae) in Paraguay with Descriptions of Two New Species
Hindawi Publishing Corporation Psyche Volume 2012, Article ID 594302, 8 pages doi:10.1155/2012/594302 Research Article Distribution and Diversity of the Cryptic Ant Genus Oxyepoecus (Hymenoptera: Formicidae: Myrmicinae) in Paraguay with Descriptions of Two New Species T. Delsinne,1 W. Mackay, 2 A. Wild,3 Y. Roisin,4 and M. Leponce1 1 Biological Evaluation Section, Royal Belgian Institute of Natural Sciences, 29 street Vautier, 1000 Brussels, Belgium 2 Laboratory for Environmental Biology, The University of Texas, El Paso, TX 79968, USA 3 Department of Entomology, University of Illinois, 505 South Goodwin Avenue, Urbana, IL 61801, USA 4 Department of Evolutionary Biology and Ecology, Université Libre de Bruxelles, 50 Avenue Roosevelt, 1050 Brussels, Belgium Correspondence should be addressed to T. Delsinne, [email protected] Received 2 April 2011; Accepted 19 April 2011 Academic Editor: Fernando Fernandez´ 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.
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