New Taxa and Cryptic Species of Neotropical Snakes (Xenodontinae), with Commentary on Hemipenes as Generic and Specific Characters

@inproceedings{Myers2014NewTA,
  title={New Taxa and Cryptic Species of Neotropical Snakes (Xenodontinae), with Commentary on Hemipenes as Generic and Specific Characters},
  author={Charles W. Myers and S. B. Mcdowell},
  year={2014}
}
ABSTRACT Eutrachelophis, new genus is established to accommodate E. bassleri, new species, and E. steinbachi (Boulenger), new combination; a third species close to E. bassleri awaits naming. These taxa are placed in the Eutrachelophiini, new tribe, to express hypothesized relationship with the Xenodontini, which are defined by presence of hemipenial apical discs (a character lost in several species). The acalyculate spiny hemipenis of Eutrachelophis bassleri is unique among “xenodontines” in… 
The enigmatic Amazonian genus Eutrachelophis: morphological evidence and description of new taxa (Serpentes: Dipsadidae: Xenodontini)
TLDR
The condition observed in the genus Lygophis is morphologically intermediate between the highly specialized condition present in Eutrachelophis and the one known to characterize other Xenodontini, supporting the allocation of this genus in the tribe.
Hidden diversity in two widespread snake species (Serpentes: Xenodontini: Erythrolamprus) from South America.
TLDR
The results show that Erythrolamprus epinephelus is paraphyletic and support recognition of the subspecies albiventris, fraseri and lamonae as distinct species and recommend caution when proposing taxonomic changes based on incomplete geographic and/or character sampling of widespread Neotropical taxa.
Hemipenial morphology of Epictia vellardi (Laurent, 1984) (Leptotyphlopidae, Serpentes) with the proposition and discussion of two general hemipenial patterns within the genus Epictia
TLDR
The hemipenial morphology of Epictia vellardi (Epictinae, Leptotyphlopidae) is described based on 16 organs belonging to eight specimens and two general morphological patterns for the genus are identified.
Taxonomic revision of the genus Xenopholis Peters, 1869 (Serpentes: Dipsadidae): Integrating morphology with ecological niche
TLDR
This study shows the advantages of combining multiple data sources for reliable identification and circumscription of ecologically similar species, as well as the disjunct distribution between Amazonian and Atlantic Forest snake species.
A new species of Ninia (Serpentes: Dipsadidae) from Chocó-Magdalena biogeographical province, western Colombia.
TLDR
The results indicate that proper and careful revision of the Ninia atrata species complex will help to understand and clarify the taxonomic composition of the genus.
A new rare species of the Rhadinaeadecorata group from the Sierra Madre del Sur of Guerrero, Mexico (Squamata, Colubridae)
TLDR
A new species of the Rhadinaeadecorata group is described based on two specimens from the Sierra Madre del Sur, Guerrero, Mexico, based on a postocular pale marking and the number of subcaudals and the coloration of the lateral portion of the ventrals.
Taxonomic Status of Erythrolamprus bizona Jan (1863) (Serpentes, Xenodontinae): Assembling a Puzzle with Many Missing Pieces
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The lectotype represents one of the rare remaining specimens used in Giorgio Jan’s original descriptions during the second half of 19th century, and is housed in the Museo Civico di Storia Naturale di Milano, Milan, Italy, confirming its composite nature.
Reclassification of Oligodon ningshaanensis Yuan, 1983 (Ophidia: Colubridae) into a New Genus, Stichophanes gen. nov with Description on Its Malacophagous Behavior
TLDR
Feeding tests show that O. ningshaanensis is a malacophagous predator, which is another matchless character for this species, and the discovery of the particular position of the subject indicates that erecting a new genus is necessary accommodate this unique species.
Does Sexual Selection Influence Ornamentation of Hemipenes in Old World Snakes?
TLDR
It is proposed that sexual selection is the major driver affecting the hemipenial ornamentation in snakes, and the adoption of a standardized index describing the hemIPenial proportions is proposed.
Skull osteology of Vipera walser (Squamata, Viperidae): Description, variability, ontogeny, and diagnostic characters in comparison to other Italian vipers
TLDR
The osteological diagnosibility provides further support for the validity of V. walser as a distinct species from Vipera berus and a first evaluation of intraspecific variability and ontogenetic variation.
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