last update: globalnames score not available match type not available. author_text: (Tschudi, ) display_name: Alsophis elegans. Expert(s). Expert: Notes: Reference for: Other Source(s). Source: Snake Species of the World, vol. undetermined, manuscript (version ). Acquired: Cryptocercus matilei Grandcolas, in GBIF Secretariat (). GBIF Backbone Taxonomy. Checklist dataset accessed via.
|Published (Last):||8 September 2018|
|PDF File Size:||17.39 Mb|
|ePub File Size:||4.71 Mb|
|Price:||Free* [*Free Regsitration Required]|
Phylogenetic relationships of colubroid snakes based on mitochondrial DNA sequences. Molecular phylogeny and systematics of the pseudoxyrhophiine snake genus Liopholidophis Reptilia, Colubridae: Adults with dorsum entirely black; Hemipenis with a unique row of larger papillae on the internal face of the lobes; postero-ventral tip of the nasal gland longer than wide; dorsal wall of Duvernoy gland reduced along all its dorsal surface Zaher, b; No known morphological synapomorphy.
A new genus for Andean snakes related to Lygophis boursieri and a new species. Alsophid the other hand, Vidal et al. Liophis is an assemblage of more than 60 species, making it one of the most diverse genera of South Alsophie colubrids. Xenodontinae subfamily [ more like this term ] [ including rank ] [ from this source ].
The clustal windows interface: The monophyly of the family Viperidae has never been seriously questioned.
The Skull of Lepidosauriap. For example, genus Cummingea Hoser contains three species, none of which have been included in a phylogenetic study and at least one of which we now know is incorrectly placed in this group Murphy, unpublished data. See also Comments under Pseudoboini.
Alsophis elegans – Serpiente corredora elegante -Elegant racer –
Parsimony analysis under direct optimization is distinct from most molecular phylogenetic analyses of snakes done so far, which have used model-based analyses e. These regions were used to split both sequences 12S and 16S into six fragments, each of them comprising approximately base pairs and acting as regions of homology constraint for the alignment search.
Examples of works using “Colubroidea” in its near-universally understood sense, but by no means an exhaustive list, include the following: Zaher discussed the variation regarding the sulcus spermaticus in colubroid snakes.
This should serve to highlight areas needing additional research. DNA was extracted from scales, blood, liver or shed skins, following specific protocols for each tissue Bricker et al. In particular, we call attention to the placements of Alsophis elegans and Psomophis Clades 35 and 36Taeniophallus Clade 44Liophis amarali Clade 45and the polyphyly of Arrhyton, Alsophis, and Antillophis within the West Indian radiation Clade 60; see Results.
A clade that can be diagnosed by at least eight putative morphological synapomorphies: On the other hand, for the coding gene c-mos we used the retro-alignment approach, which permits the inclusion of the biological information in codon triplets. Natrix atra Gosse,by original designation.
Alsophis elegans (Tschudi, 1845)
Sulcus spermaticus simple, derived from the right branch of a primitively divided sulcus see Comments. The taxonomically most comprehensive studies of this group, Nagy et al. Substitution bias, weighting of DNA sequence evolution, and the phylogenetic position of Fea’s viper.
Family Calamariidae Bonaparte, terminal taxon: Since there seems to be no compelling evidence that would support an unambiguous position of Grayia within Colubroidea, we here refrain to include the genus in a separate subfamily and place it in Colubridae incertae sedis. Catalogue of the snakes in the British Museum, Vol.
Caraiba new genus Type-species: This new application of a long-standing taxonomic name clouds an already murky and confusing taxonomy, particularly as it was seemingly done very casually. Alluaudina Mocquard, ; Amplorhinus A. Hemipenis bicalyculate and noncapitate; calycular regions directed laterally; intrasulcal area of hemipenis with two parallel rows of enlarged spines; tip of the tail yellowish with tail-luring posture in young individuals. In other words, “Colubroidea” has had long-standing use as the name elegane the clade comprising viperids, elapids, and all “colubrid” snakes and their derivatives hydrophiines, atractaspidids, etc.
Tetrapoda unranked [ more like this term ] [ including rank ] [ from this source wlsophis. A similar character exists in some Lamprophiidae, but in this case the flounces extend to the hemipenial body. Smith, ; Atractaspis A. Snakes of the World: Because Carphophis, Contia and Diadophis form a strongly supported clade that is also corroborated by derived hemipenial evidence, we here alsophia them in a new subfamily Carphophiinae.
Alsophis elegans – Serpiente corredora elegante -Elegant r… | Flickr
Maglio, whose work ushered in the modern era of study of the West Indian xenodontine radiation; gender masculine. We do not have a clear explanation for this frame-shift mutation, because the first deletion inserts a stop codon at position AA sequenceprobably disabling the c-mos protein. Help us improve the site by taking our survey. Tulane Studies in Zoology, Caaeteboia new genus Type-species: This deletion is one additional arginine indel that occurred in the same three-arginine region.
James Alsophiz, during his exploration of Peru in The following summarizes our classification to tribe level as an aid in following the text.
Subsequent to Pinou et al. Proceedings of the Royal Society, Biological Sciences, See Comments under Pseudoboini. Our sampling within clades apart from xenodontines is not dense relative to the diversity within these clades, but the following relationships are indicated in our tree Fig. Presence of several large papillae alsophix vertically on the lobular crotch and the proximal region of the lobes; enlarged basal nude pocket present with a large associated lobe on the asulcate edge and a much smaller lobe on the sulcate edge.
Smithsonian Herpetological Information Service, Direct optimization parsimony analysis of the data set using POY resulted in one most parsimonious tree with steps Fig. They recognized a new family, Prosymnidae, including only the genus Prosymna based on the fact that Prosymna appeared in all their analyses “at the same hierarchical level as other major clades” and thus should be accommodated in a distinct family.
However, at least some of the genera they mention as xenodermatids Mehelya, Pseudaspis, Alsopis are shown in other works to have phylogenetic affinities elsewhere. This clade is supported by a single putative morphological synapomorphy: