Figure 6 from: Smith P, Brouard J-P, Cacciali P (2022) A new species of Phalotris (Serpentes, Colubridae, Elapomorphini) from Paraguay. Zoosystematics and Evolution 98(1): 77-85. https://doi.org/10.3897/zse.98.61064

Figure 6 Suggested hypothesis of phylogenetic relationships among species within the Phalotris nasutus group, based on a first proposal by Ferrarezzi (1993). This hypothesis shows a probable change in characters during evolution. *Note that the reduction of 1st temporals is visible in P. labiomaculatus where the 1st temporal is rather small or absent in some specimens (Hamdan et al. 2013). Base map: biomes of the world, according to Olson et al. (2001)