Systematics Thecadactylus

NUEVA PUBLICACION / NEW PUBLICATION:

Systematics and biogeography of the widespread Neotropical gekkonid genus Thecadactylus (Squamata), with the description of a new cryptic species


Thecadactylus solimoensis sp. nov.

Abstract: The systematics of the widespread neotropical gekkonid genus Thecadactylus is investigated using a combination of morphological, morphometric and mtDNA (cytochrome b) sequence data, forming a total evidence dataset. The analysis tackles the common yet complex problem of a widespread taxon consisting of one or more cryptic species that are difficult to diagnose using morphology alone. The data are analysed using both maximum parsimony and Bayesian inference. Virtually all analyses resolve a well-supported south-western Amazonian clade distinct from the remainder of the recognized T. rapicauda. The south-western Amazonian clade is not only robustly supported, but also exclusive, geographically coherent and sufficiently distinct to warrant specific recognition. The new species is diagnosable on the basis of molecular sequences that are 23.0–26.9% divergent from those of T. rapicauda, and morphological evidence. Bayesian inference analysis robustly resolves meaningful and repeatable patterns of relationship. The biogeography of Thecadactylus is interpreted in the context of its two constituent species, and difficulties of resolving systematic and biogeographical patterns in widespread, cosmopolitan taxa are discussed.

Cita / Citation: BERGMANN, P. J. & RUSSELL, A. P. (2007) Systematics and biogeography of the widespread Neotropical gekkonid genus Thecadactylus (Squamata), with the description of a new cryptic species. Zoological Journal of the Linnean Society, 149, 339–370.

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Corresponding author: PHILIP J. BERGMANN pjbergma@nsm.umass.edu


Related publication: Kronauera et al. (2005) A phylogeographically distinct and deep divergence in the widespread Neotropical turnip-tailed gecko, Thecadactylus rapicauda. Molecular Phylogenetics and Evolution 34 (2005) 431–437. (doi:10.1016/j.ympev.2004.10.009; available at http://people.umass.edu/pjbergma/Kronauer%20et%20al%202005.pdf)

Lampropeltis, Osteocephalus, Oxybelis, Xenoxybelis

TRES NUEVAS PUBLICACIONES / THREE NEW PUBLICATIONS:

On the distribution and conservation of Lampropeltis triangulum (LACÉPÈDE, 1789) in Ecuador

Ecuadorian distribution of snakes of the genera Oxybelis WAGLER, 1830 and Xenoxybelis MACHADO, 1993

Notes on some Osteocephalus treefrogs from Amazonian Ecuador

Resumen: Notas sobre la distribución, historia natural y conservación de serpientes de los géneros Lampropeltis (Lampropeltis triangulum mocropholis), Oxybelis (Oxybelis aeneus, Oxybelis brevirostris, Oxybelis fulgidus) y Xenoxybelis (Xenoxybelis argenteus) y de Ranas Arborícolas del género Osteocephalus (Osteocephalus yasuni, Osteocephalus mutabor) publicadas en Herpetozoa 19 (3/4)

Abstract: Notes on the distribution, natural history and conservation of snakes of the genera Lampropeltis (Lampropeltis triangulum mocropholis), Oxybelis (Oxybelis aeneus, Oxybelis brevirostris, Oxybelis fulgidus) y Xenoxybelis (Xenoxybelis argenteus) and of Treefrogs of the genus Osteocephalus (Osteocephalus yasuni, Osteocephalus mutabor) published in Herpetozoa 19 (3/4).

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Phyllonastes Ecuador & Peru

NUEVA PUBLICACION / NEW PUBLICATION:

New records of Phyllonastes HEYER, 1977 from Ecuador and Peru.

Resumen: Los primeros reportes de Phyllonastes myrmecoides de Ecuador y de Phyllonastes lochites de Peru, con algunos comentarios sobre la diversidad del género en ambos paises.

Abstract: First reports of Phyllonastes myrmecoides from Ecuador and Phyllonastes lochites from Peru, with some comments on the diversity of the genus in both countries.

Cita / Citation: New records of Phyllonastes HEYER, 1977 from Ecuador and Peru. Herpetozoa 19 (3/4): 184-186.

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