Xenodon histricus (Jan, 1863)

Type locality. South America fide Jan and Sordelli (1865) .

Distribution. Known from Argentina, Brazil, Paraguay, and Uruguay, mostly along open biomes (Plt. 398A). In Brazil, widespread in the Pampas Grassland, with marginal records in the Araucaria Forest, Atlantic Forest, and Cerrado (Plt. 398A), at low to high elevations (Plt. 398B). Previous map and taxonomy in Hoge et al. (1975). Observed in the field in grassland and savanna (Di-Bernardo et al., 2003).