Variation and taxonomic status of the aquatic coral snake Micrurus surinamensis (Cuvier, 1817) (Serpentes: Elapidae)

Zootaxa ◽  
2005 ◽  
Vol 953 (1) ◽  
pp. 1 ◽  
Author(s):  
PAULO PASSOS ◽  
DANIEL S. FERNANDES
Keyword(s):  
Taxonomic Status ◽  
Parietal Bone ◽  
External Morphology ◽  
Coral Snake ◽  
Posterior Portion

The taxonomic status of Micrurus surinamensis (Cuvier, 1817), is revised and variation on data concerning external morphology, osteology and hemipenis are described. Micrurus s. nattereri Schmidt, 1952 is here considered as a species, based on the number of ventral scales, shape of posterior portion of parietal bone, and length of supratemporals.

Taxonomic Status of the False Coral Snake Genus Simophis (Peters, 1860) (Serpentes: Colubridae: Colubrinae) from Paraguay and Brazil

2009 ◽  
Vol 43 (4) ◽  
pp. 698-703 ◽  
Author(s):  
Pier Cacciali ◽  
Norman J. Scott ◽  
Rainer Guenther ◽  
Ricardo J. Sawaya ◽  
Francisco Brusquetti ◽  
...  
Keyword(s):  
Taxonomic Status ◽  
Coral Snake

scholarly journals New records of the William’s Jerboa, Paralactaga cf. williamsi (Thomas, 1897) (Rodentia: Dipodidae) from northeastern Iran with notes on its ecology

Check List ◽  
2016 ◽  
Vol 12 (2) ◽  
pp. 1855 ◽  
Author(s):  
Kordiyeh Hamidi ◽  
Jamshid Darvish ◽  
Maryam M. Matin
Keyword(s):  
Species Identification ◽  
Cytochrome B ◽  
New Record ◽  
New Records ◽  
Taxonomic Status ◽  
First Record ◽  
External Morphology ◽  
Western Iran ◽  
Eastern Iran ◽  
Molar Teeth

Paralactaga williamsi, a five-toed jerboa, is known to occur in Anatolian Turkey, northern Lebanon, Armenia, Azerbaijan and western Iran. Here, we report the first record of this species in Kopet-Dag Mountains, northeastern Iran. Species identification was based on external morphology, skull and molar teeth morphology and morphometrics studies, as well as molecular an­al­yses. Brief notes on the ecology of the species are also provided. This new record expands the distribution of P. williamsi in Iran about 850 km eastward, however further sampling will be needed for a better judgment on the taxonomic status of this species in eastern Iran and to determine the patterns of its distribution. Since the specimen did not group with other P. williamsi in the cytochrome b analysis, we provisionally classify the specimens as P. cf. williamsi.

Geographical variation and taxonomy of the snail-eating snake Dipsas albifrons (Sauvage, 1884), with comments on the systematic status of Dipsas albifrons cavalheiroi Hoge, 1950 (Serpentes: Colubridae: Dipsadinae)

Zootaxa ◽  
2005 ◽  
Vol 1013 (1) ◽  
pp. 19 ◽  
Author(s):  
PAULO PASSOS ◽  
RONALDO FERNANDES ◽  
MARCOVAN PORTO
Keyword(s):  
Geographic Variation ◽  
Geographical Variation ◽  
Multivariate Analyses ◽  
Taxonomic Status ◽  
External Morphology ◽  
Island Population ◽  
Systematic Status ◽  
Qualitative Analyses

The taxonomic status of Dipsas albifrons is revised and geographic variation of external morphology and hemipenis are described. Multivariate analyses suggest that the pattern of geographical variation is correlated with gap sampling, probably indicating a northernward cline in segmental counts (mainly ventral and subcaudal scales). Quantitative and qualitative analyses reveal that the island population (Dipsas albifrons cavalheiroi) is not divergent from mainland populations and, herein, is considered a junior synonymy of Dipsas albifrons. A lectotype of Dipsas albifrons is designated.

Rediscovery and redescription of the type of Philodryas laticeps Werner, 1900 and the taxonomic status of P. oligolepis Gomes, 1921 (Serpentes, Colubridae)

Zootaxa ◽  
2008 ◽  
Vol 1940 (1) ◽  
pp. 25-40 ◽  
Author(s):  
HUSSAM ZAHER ◽  
GUSTAVO SCROCCHI ◽  
ROBERTA MASIERO
Keyword(s):  
Intraspecific Variation ◽  
Taxonomic Status ◽  
Sao Paulo ◽  
External Morphology ◽  
São Paulo ◽  
Floor Of The Mouth ◽  
The World

Philodryas laticeps Werner, 1900 was previously known only from the holotype, which was believed to be lost during the World Wars. We found the holotype to be housed in the Museum für Naturkunde, Berlin and here redescribe it and report on three additional specimens from the collections of the Instituto Butantan, São Paulo and Museum für Naturkunde, Berlin. We conclude that Philodryas oligolepis Gomes, 1921 and P. affinis Müller, 1928 are junior synonyms of Philodryas laticeps Werner, 1900. All specimens share the presence of a black mucosa surrounding the larynx and trachea in the floor of the mouth and distal rows of middle sized spines disposed in a typical “V-shaped” configuration on the asulcate surface of the hemipenial body, two uniquely derived features absent in all other species of the genus Philodryas. Intraspecific variation of external morphology, hemipenes, and coloration are documented.

Albian Eoradiolites (Bivalvia: Radiolitidae) from Jabal NaÏmia, Gafsa Region, Tunisia, with revisional studies on the Albian forms of the genus

2010 ◽  
Vol 84 (2) ◽  
pp. 321-331 ◽  
Author(s):  
Jose Maria Pons ◽  
Enric Vicens ◽  
Fettouma Chikhi-Aouimeur ◽  
Hassen Abdallah
Keyword(s):  
Shell Structure ◽  
Taxonomic Status ◽  
The Other ◽  
External Morphology ◽  
Original Material ◽  
Central Tunisia ◽  
Complete Knowledge ◽  
Sediment Matrix

The external morphology and its variability, myocardinal apparatus, and shell structure of both valves of the radiolitid rudist Eoradiolites plicatus (Conrad) are described, based on the examination of about one hundred well-preserved, fairly complete specimens that are free of sediment matrix, found in a single bed of an ammonite-bearing Albian succession ('Knemiceras beds', Zebbag Formation) in central Tunisia. This study provides the most nearly complete knowledge of any Eoradiolites species to date. With this background, all previous records of E. plicatus, as well as the taxonomic status of the other Albian species of the genus, are revised considering both original material, when available, and published papers. As a result, the systematics of Eoradiolites is simplified.

On the taxonomic status of Chactas camposi Mello-Leitão, 1939 (Scorpiones, Chactidae)

Zootaxa ◽  
2012 ◽  
Vol 3210 (1) ◽  
pp. 61 ◽  
Author(s):  
JOSÉ A. OCHOA ◽  
RICARDO PINTO-DA-ROCHA
Keyword(s):  
Rio De Janeiro ◽  
Taxonomic Status ◽  
External Morphology ◽  
Holotype Female

The true taxonomic status of the chactid scorpion Chactas camposi Mello-Leitão, 1939 from Ecuador is established basedin the recently discovered holotype female, until now considered lost, at the Museu Nacional do Rio de Janeiro. In baseon the analysis of the external morphology, we transfer this species to the genus Teuthraustes Simon, 1878. A detailedredescription and diagnosis according to modern standards are provided. Teuthraustes camposi comb. n. is closely related with Teuthraustes whymperi (Pocock, 1893) from Ecuadorian provinces Pichincha and Cotopaxi.

On the taxonomic status of three enigmatic Indochinese frog species (Amphibia: Anura) described by L. G. Andersson

Zootaxa ◽  
2020 ◽  
Vol 4834 (4) ◽  
pp. 502-522
Author(s):  
NIKOLAY A. POYARKOV ◽  
EVGENIYA N. SOLOVYEVA ◽  
TAN VAN NGUYEN ◽  
PETER GEISSLER
Keyword(s):  
New Species ◽  
Southeast Asia ◽  
20Th Century ◽  
Taxonomic Status ◽  
Junior Synonym ◽  
External Morphology ◽  
Valid Species ◽  
Type Specimens ◽  
Frog Species ◽  
Mainland Southeast Asia

In the first half of the 20th century, four Swedish expeditions to Indochina contributed significantly to the knowledge on the herpetofauna of mainland Southeast Asia. The collected material was examined by L. G. Andersson in Stockholm, resulting in the description of seven new species and forms of amphibians and reptiles from Vietnam and Thailand. However, the taxonomic status of three enigmatic frog species described by Andersson, namely Rana scutigera, Oxyglossus laevis var. vittata, and Microhyla fusca, remained doubtful. All three taxa are only known from their type specimens and their short original descriptions. Though subsequent studies have doubted their validity or systematic assignment, they have been treated as valid species until today. We have examined the external morphology and coloration of the type specimens, what led to a taxonomic reallocation of these three species. We demonstrate that Rana scutigera Andersson, 1916 is a junior synonym of Polypedates megacephalus Hallowell, 1861, Oxyglossus laevis var. vittata Andersson, 1942 is synonymized with Occidozyga martensii (Peters, 1967), and Microhyla fusca Andersson, 1942 represents a junior synonym of Microhyla butleri Boulenger, 1900. 

A new species of Dipsas Laurenti from the Atlantic Forest of Brazil (Serpentes: Dipsadidae)

Zootaxa ◽  
2010 ◽  
Vol 2691 (1) ◽  
pp. 57 ◽  
Author(s):  
DANIEL S. FERNANDES ◽  
OTAVIO A. V. MARQUES ◽  
ANTÔNIO J. S. ARGÔLO
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Color Pattern ◽  
Species Group ◽  
External Morphology ◽  
Posterior Half ◽  
Anterior Portion ◽  
Posterior Portion ◽  
A New Species

Dipsas sazimai sp. nov. is described from the Atlantic Forest of Brazil. The new species is distinguished from all congeners by showing anterior portion of body with rounded dorsal blotches wider than interblotches; median and posterior portion of body with blotches higher than long and narrower than interblotches; posterior body blotches lighter than anterior blotches; posterior blotches with conspicuous white edge in paraventral region; tiny and vertically oriented streaks in the interblotches from the posterior half of body; 187–209 ventral scales; 107–129 subcaudal scales; and the first blotch not reaching the rictus. Based on characters of external morphology and color pattern we suggest the new species is related to taxa of the recently proposed Dipsas incerta species group.

scholarly journals Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography

2011 ◽  
Vol 9 (3) ◽  
pp. 457-469 ◽  
Author(s):  
Tiago P. Carvalho ◽  
James S. Albert
Keyword(s):  
Computed Tomography ◽  
Electric Fish ◽  
The Body ◽  
External Morphology ◽  
Phylogenetic Position ◽  
Posterior Portion ◽  
Fish Family ◽  
X Ray ◽  
Morphological Studies ◽  
X Ray Computed

We redescribe Iracema caiana, a monotypic genus of the gymnotiform electric fish family Rhamphichthyidae. Iracema is known only from the type series (holotype and three paratypes) collected from the rio Jauaperi, affluent to the rio Negro in the Amazon basin, and was never collected again. Previous morphological studies were limited to features of external morphology. To study the osteology of Iracema we examined two specimens of different sizes using high-resolution x-ray computed tomography, a non-invasive and non-destructive technique to visualize internal anatomical structures. We describe and illustrate the osteology of Iracema caiana, and present data on morphometrics and external morphology. Contrary to previous hypotheses we propose that Iracema is the sister group to Rhamphichthys based on four synapomorphies: intermuscular bones present in the adductor mandibulae, reticulated texture of opercles, fully ossified Baudelot's ligaments, and elongate scales above the lateral line in the posterior portion of the body.

New characters and redescription of Dendroctonus vitei (Coleoptera: Curculionidae: Scolytinae)

2017 ◽  
Vol 149 (4) ◽  
pp. 413-433 ◽  
Author(s):  
Francisco Armendáriz-Toledano ◽  
Jazmín García-Román ◽  
María Fernanda López ◽  
Brian T. Sullivan ◽  
Gerardo Zúñiga
Keyword(s):  
Geographic Variation ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Sensu Stricto ◽  
Dendroctonus Frontalis ◽  
External Morphology ◽  
Morphological Data ◽  
Similar Species ◽  
Male And Female ◽  
Stridulatory Apparatus

AbstractThe taxonomic status of Dendroctonus vitei Wood (Coleoptera: Curculionidae: Scolytinae) and Dendroctonus mexicanus Hopkins is supported by biological and morphological data. However, the differentiation of these species has been extremely difficult because most of the morphological characters have not been well illustrated and some of them are geographically variable. Seminal rod shape has been the only reliable characteristic to identify these species. The main purpose of this study was to look for new morphological characters for the identification of these species as well as to evaluate geographic variation of those previously reported characters in order to produce a comprehensive redescription of D. vitei. A total of 33 morphological characters from antenna, stridulatory apparatus, male and female genitalia, and external morphology were compared between the similar species D. vitei and D. mexicanus, and we identified five novel diagnostic characters and confirmed previously reported characters that differentiate these two species from each other and from other species in the Dendroctonus frontalis Zimmermann complex (sensu stricto). Furthermore, these characters and those of the seminal rod allowed us to re-evaluate some previously reported records for other species to broaden the known distribution of D. vitei.

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