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.
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Echinanthera Cope, alsopuis of the tribe ; Taeniophallus Cope, A pair of pigmented spots on the palate; posterior region of the palatine bone longer than dental process, behind vomerian process; dorsal region of the vomer with a distinct process in which the ligament of the muscle retractor vomeris is attached; distinct maxillary process of the prefrontal forming a well defined articular area; lateral nasal process of the prefrontal hook-like; hemipenis bicalyculate and bicapitate; large lateral spines on the alsophiis crests; presence of a pair of calycular pockets within the lobular crotch of the hemipenis; enlarged lateral spines of hemipenis extending onto the lobular crests; lobular crests inflated Zaher, b, However, flounce-like spinulate structures on the hemipenial body are unique to the Lamprophiinae.
Lamprophiinae Fitzinger, ; Pseudoxyrhophiinae, Dowling, Azemiops was a sister clade to Viperinae in the study of Kelly et al.
Relationships within clades 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. However, mechanisms such as post-transcriptional modifications and RNA editing Brennicke et al. Description du comportement de ‘frottement’ et notes sur la reproduction et la fonction maxillaire de la couleuvre de Montpellier Malpolon monspessulanus.
Bryson, Murphy et al. Snakes of the Peruvian coastal region. Higher-level phylogeny of Asian and American coralsnakes, their placement within the Elapidae Squamataand the systematics affinities of the enigmatic Asian coralsnake Hemibungarus calligaster Wiegmann, A list of voucher specimens for the alsopihs sequences we present is available from the authors.
Taxonomy Documentation Taxon Name is the “namestring” or “scientific name,” the “data” that is used to form Identifications and the core of every Taxonomy record. We further used the pruned tree method in TNT to resolve the polytomy at node 19 and found that the position of Pseudoxenodon is the principal cause of different trees found in TNT. This approach simultaneously estimates the nucleotide alignment and the phylogenetic tree based on the algorithm described by Sankoff Tropidodryas Fitzinger, type-genus of the tribe b y monotypy.
Alsophis – Wikispecies
Spinulate flounce-like structures have been confirmed only in Polemon, Macrelaps, Amblyodipsas, and most Aparallactus not present in Atractaspis fallax ; they are yet to be confirmed in the other genera. This result is consistent with the placement of Aparallactus, Atractaspis, and Homoroselaps in our study with respect to one another. Bilateria subkingdom [ more like this term ] [ including rank ] [ from this source ].
Molecular systematics of Neotropical xenodontine snakes. We comment in more detail on certain aspects of their analyses and taxonomy at appropriate points in our discussion below.
Oral glands of the reptilia. Within Viperidae the basal position of the genus Causus has been suggested by many workers e. In our study homalopsines are strongly supported as a sister clade to Clade eelgans Fig. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.
Herpetological results of the Vernay Angola Expedition. The hemipenial synapomorphy of Pseudoxyrhophiinae is also present homoplastically in Homalopsidae. Alsophis elegans Tschudi, Classification: Although we do not fully adopt the philosophy and procedures elaborated by Frost et eldgans.
Serpentes, Amphisbaenia, and Ichthyosauria.
Alsophis elegans (Tschudi, 1845)
The nesting of Ninia and Atractus within Dipsadini is novel, and suggests that additional work with denser taxonomic sampling should be carried out within this group see also Mulcahy, Our study, as well as earlier molecular studies e.
The name “Colubroidea” has a long history in snake classificatory literature as the name applied to the sister clade of Acrochordidae within Caenophidia. Liophis amarali Wettstein, Substitution bias, weighting of DNA sequence evolution, and the phylogenetic position of Fea’s viper.
Phylogenetic relationships of terrestrial Australo-Papuan elapid snakes subfamily Hydrophiinae based on cytochrome b and 16S rRNA sequences. Pseudalsophis new genus Type-species: However, their maximum parsimony analysis MP did not resolve well supported deeper nodes among the five “colubroid” families, apart from Pareatidae, which was the sister taxon of a clade including the remaining four. Spines of the hemipenial body arrayed in transverse rows connected basally by tissue, forming spinulate flounce-like structures less developed in some taxa such as Bothrolycus Zaher, For these reasons we prefer not to recognize Prosymnidae and Pseudaspididae.
Hemipenes bicalyculate; enlarged intrasulcal spines present on each side of the sulcal region; lobular crotch and medial surfaces of the lobes almost completely nude; capitular overhanging edge composed of a thin fringe of tissue.
We have resisted giving formal names to taxa solely because their phylogenetic position cannot be estimated with any precision or robustness. Australasian Journal of Herpetology, 6: Tweet Please submit feedback about this entry to the curator.
However, at least some of the genera they mention as xenodermatids Mehelya, Pseudaspis, Xenopholis are shown in other works to have phylogenetic affinities elsewhere.
In virtually no case has any attempt been made to integrate morphological data into the classification schemes. Other than a strongly supported clade in their molecular phylogeny, neither Pinou et al.
Schwartzophis new genus Type-species: Named after Vincent J. Although not present in our analysis, the genus Manolepis is alsolhis here in Conophiini due to its hemipenial similarities with Conophis Zaher,