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Taxonomic revision and comments on two groups of the genus Coniophanes (Squamata: Dipsadidae)

Title: Taxonomic revision and comments on two groups of the genus Coniophanes (Squamata: Dipsadidae)

Creators: Ricardo Palacios-Aguilar, Oscar Flores-Villela

Submitted December 17, 2019.

Accepted March 9, 2020.

Published online at www.senckenberg.de/vertebrate-zoology on March 25, 2020.

Published in print Q2/2020.

DOI: 10.26049/VZ70-2-2020-02
PDF/A 4.7MB

Published by Senckenberg Gesellschaft für Naturforschung

Date (Publication Year): 2020

Resource Type (General): TEXT

Resource Type (optional): Vertebrate Zoology, Scientific Article

Description (en): A revision of the Coniophanes lateritius and C. piceivittis groups was conducted to evaluate the taxonomic status of their members. The supraspecific groups of Coniophanes can be easily distinguished from each other, but the species within them exhibit wide overlap in scutellation. Apparently, these taxa can be differentiated by color pattern and geographic distribution. However, we report polymorphism in the color pattern of the lateritius group. Maxillary and hemipenial morphology can be useful and informative in the groups studied. The revision of these characters (scutellation, color pattern, maxillary and hemipenial morphology, and geographic distribution) led us to conclude that C. sarae is a junior synonym of C. lateritius, and to resurrect the name C. taeniatus new comb., for the Atlantic versant populations of Mexico previously assigned to C. piceivittis.

Key words: Dipsadidae, hemipenial morphology, maxillary morphology, Mexico, nomenclature.

Description (es): Se llevó a cabo la revisión de los grupos Coniophanes lateritius y C. piceivittis para evaluar el status taxonómico de sus integrantes. Los grupos supraespecíficos en Coniophanes pueden ser fácilmente diagnosticables entre sí, pero las especies que los conforman muestran amplio sobrelapamiento de caracteres de escutelación y parecen ser diferenciables sólo por patrones de coloración y distribución geográfica. Sin embargo, registramos polimorfismos en el patrón de coloración en el grupo lateritius. La morfología maxilar y hemipenial puede ser informativa y útil en los grupos abordados en este trabajo. La revisión de estos atributos (escutelación, morfología maxilar, hemipenial y distribución geográfica) nos lleva a considerar a C. sarae un sinónimo de C. lateritius y a resucitar el nombre C. taeniatus nueva comb., para las poblaciones de la vertiente del Atlántico de México previamente asignadas a C. piceivittis.

Palabras clave: Dipsadidae, México, morfología hemipeneal, morfología maxilar, nomenclatura.

Citation: Palacios-Aguilar, R., Flores-Villela, O. (2020). Taxonomic revision and comments on two groups of the genus Coniophanes (Squamata: Dipsadidae). Vertebrate Zoology, 70(2): 111-124. https://doi.org/10.26049/VZ70-2-2020-02