Differences in throat color pattern between species of the Sibon nebulatus leucomelas complex a S. vieirai sp. nov. ZSFQ 5073 from Hacienda Cerro Chico, Los Ríos province, Ecuador b S. vieirai sp. nov. holotype ZSFQ 5071 from Tundaloma Lodge, Esmeraldas Province, Ecuador c S. leucomelas CZI-R075 from Represa Murrapal, Valle del Cauca department, Colombia d S. leucomelas CZI-R029 from Campamento Yatacué, Valle del Cauca department, Colombia.

  Part of: Arteaga A, Batista A (2023) A consolidated phylogeny of snail-eating snakes (Serpentes, Dipsadini), with the description of five new species from Colombia, Ecuador, and Panama. ZooKeys 1143: 1-49. https://doi.org/10.3897/zookeys.1143.93601