Acanthostichus quadratus

Distribution
This taxon was described from Bolivia. It is also found in Ecuador, Brazil, Peru and Argentina.

Nomenclature

 *  quadratus. Acanthostichus quadratus Emery, 1895j: 750, fig. OO.A; pl. 16, figs. 5, 6; pl. 17, fig. 12 (w.q.) BOLIVIA. Senior synonym of niger: Mackay, 1996: 162.
 * niger. Acanthostichus serratulus var. niger Santschi, 1933e: 105 (q.) ARGENTINA. Junior synonym of serratulus: Kusnezov, 1962a: 132. Revived from synonymy and raised to species: Brown, 1975: 42. Junior synonym of quadratus: Mackay, 1996: 162.

Additional References

 * Morini, M. S. de C.; Yashima, M.; Zene, F. Y.; Silva, R. R. da; Jahyny, B. 2004. Observations on the Acanthostichus quadratus (Hymenoptera: Formicidae: Cerapachyinae) visiting underground bait and fruits of the Syagrus romanzoffiana, in an area of the Atlantic forest, Brazil. Sociobiology 43:573-578. [2004]