Table 3 in A consolidated phylogeny of snail-eating snakes (Serpentes, Dipsadini), with the description of five new species from Colombia, Ecuador, and Panama

Table 3. Differences in coloration, scale counts, and size between Sibon leucomelas and S. vieirai sp. nov. The range of each continuous variable is from our own sample, Boulenger 1896, and Frazier et al. (2006). The numbers in parentheses represent the sample size. VariableSibon leucomelasSibon vieirai sp. nov.White dorsal bandsDistinct, 1-2 scales wideIncomplete, broken into dotsComplete black bands extending over the entire dorsal and lateral surfacesPresent, distinctUsually absent; if present, indistinct and brokenColor of pale dorsal markingsRosy whiteWhiteThroat patternEntirely black with fine white specklingCheckerboard, with large black and white markingsSexMales (n = 5)Females (n = 7)Males (n = 8)Females (n = 5)Maximum TOL809 mm700 mm732 mm714 mmVentral scales190-198187-194183-195178-189Subcaudal scales86-10184-10095-10578-92