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Higher‐level phylogenetic affinities of the Neotropical genus Mastigodryas Amaral, 1934 (Serpentes: Colubridae), species‐group definition and description of a new genus for Mastigodryas bifossatus.
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- Author(s): Montingelli, Giovanna G.; Grazziotin, Felipe G.; Battilana, Jaqueline; Murphy, Robert W.; Zhang, Ya‐Ping; Zaher, Hussam
- Source:
Journal of Zoological Systematics & Evolutionary Research; May2019, Vol. 57 Issue 2, p205-239, 35p- Subject Terms:
- Source:
- Additional Information
- Subject Terms:
- Abstract: Most Neotropical colubrid snakes belong to a single, well‐supported lineage. Relationships between the major constituents of this clade remain. Here, we explore the phylogenetic relationships of Mastigodryas and its affinities to other Neotropical colubrid genera by combining DNA and morphological data. Analyses demonstrate that the concatenation of multiple individuals into a single terminal can mask the detection of new taxa. Further, non‐random missing data and/or taxa in some empirical datasets can bias species tree analyses more than concatenation approaches. Our results place Mastigodryas in a strongly supported clade that includes Drymarchon, Rhinobothryum, Drymoluber, Simophis and Leptodrymus. Mastigodryas bifossatus is more closely related to species of Drymoluber and Simophis than to its congeners. Thus, we erect a new genus to accommodate it and recover a monophyletic Mastigodryas. We highlight the importance of the use of morphological characters to diagnose suprageneric clades by showing that some key external and hemipenial characteristics are phylogenetically informative. We explore the phylogenetic relationships of Mastigodryas by combining DNA sequence data and morphological data. Analyses demonstrate that non‐random missing data and/or taxa in some empirical datasets can bias species tree analyses more than concatenation approaches. The genus is placed in a strongly supported clade that includes Drymarchon, Rhinobothryum, Drymoluber, Simophis and Leptodrymus. Mastigodryas bifossatus is more closely related to species of Drymoluber and Simophis than to its congeners. Thus, we redefine Mastigodryas and erect a new genus to accommodate M. bifossatus. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Journal of Zoological Systematics & Evolutionary Research is the property of Hindawi Limited and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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