Acanthostichus quadratus

Distribution based on Regional Taxon Lists
Neotropical Region: Argentina, Bolivia, Brazil, Ecuador, Peru.

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.