Xenodon dorbignyi (Bibron in Duméril et al., 1854)

Type locality. “ South America. ” Type series collected in Buenos Aires, Argentina; Montevideo, Uruguay and Santa Catarina, Brazil .

Distribution. Known from Argentina, Brazil, Paraguay, and Uruguay, mostly along open biomes (Plt. 396A). In Brazil, widespread in Pampas Grasslands (Plt. 396A), at low elevations (Plt. 396B). Taxonomy in Hoge et al. (1975). Observed in the field in grassland (Lema et al., 1983; Oliveira et al., 2001; Winck et al., 2007; Ghizoni-Jr. et al., 2009; Tozetti et al., 2009; Quintela et al., 2011b).