Confirmation of a New Species of Small Dasyurid Marsupial by Electrophoretic Analysis of Enzymes and Proteins

1983 ◽  
Vol 31 (5) ◽  
pp. 743 ◽  
Author(s):  
DW Cooper ◽  
A Woolley
Keyword(s):  
New Species ◽  
Genetic Distance ◽  
Electrophoretic Mobility ◽  
Late Miocene ◽  
Electrophoretic Analysis ◽  
Early Pliocene ◽  
Antechinus Stuartii ◽  
A New Species ◽  
Nei's Genetic Distance

Eight species of dasyurid marsupials have been typed for the electrophoretic mobility of 18 of their enzymes and proteins. The species were the Ningbing antechinus (Pseudantechinus sp.), Pseudantechinus macdonnellensis (formerly Antechinus macdonnellensis), Parantechinus apicalis (formerly Antechinus apicalis), Parantechinus bilarni (formerly Antechinus bilarni), Antechinus stuartii, Dasykaluta rosamondae (formerly Antechinus rosamondae), Dasycercus cristicauda and Planigale maculata. The results show that the Ningbing antechinus is a probable new species. The data suggest that its nearest relative is Dasycercus cristicauda. Analysis of the results by calculation of a modified x2 and an approximation to Nei's genetic distance indicates that all species have been the product of one radiation, possibly in the late Miocene or early Pliocene. Two races of P. macdonnellensis probably exist, separable by their transferrin types.

scholarly journals Anopheles (Nyssorhynchus) deaneorum: a new species in the albitarsis complex (Diptera: culicidae)

1989 ◽  
Vol 84 (4) ◽  
pp. 535-543 ◽  
Author(s):  
Maria Goreti Rosa-Freitas
Keyword(s):  
New Species ◽  
Genetic Distance ◽  
Adult Female ◽  
Instar Larva ◽  
Fourth Instar ◽  
Type Locality ◽  
Fourth Instar Larva ◽  
External Appearance ◽  
A New Species ◽  
Nei's Genetic Distance

Anopheles (Nyssorhynchus) deaneorum sp. n. is described from specimens collected in Guajará-Mirim, Rondônia state and Rio Branco, Acre state, Brazil, on human and animal baits, inside dwellings and from the progenies of engorged females. A detailed description of the shape of egg, external appearance of adult female and male, genitalias, female cibarial armature and complete chaetotaxy of pupa and larva show that it can be distinguished from Anopheles albitarsis from the type-locality and other areas by the paler general external appearance of the adult, the posterolateral tufts of scales, on the female abdominal terga and the branching of the outer anterior clypeal seta (3-C) of the fourth instar larva (as shown in illustrations). If species can also be distinguished from An. albitarsis from the type locality by the allele frequencies at 11 enzymic loci as represented by Nei's Genetic Distance.

scholarly journals First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene–early Pliocene of the southern central Andes, NW Argentina

2017 ◽  
Vol 91 (3) ◽  
pp. 566-576 ◽  
Author(s):  
Ricardo A. Bonini ◽  
Gabriela I. Schmidt ◽  
Marcelo A. Reguero ◽  
Esperanza Cerdeño ◽  
Adriana M. Candela ◽  
...  
Keyword(s):  
New Species ◽  
Late Miocene ◽  
First Record ◽  
Phylogenetic Position ◽  
New Taxon ◽  
Mandibular Ramus ◽  
Early Pliocene ◽  
Southern Central ◽  
The Right ◽  
A New Species

AbstractA new species of toxodontid notoungulate, Xotodon maimarensis n. sp., is described from the Maimará Formation (late Miocene–early Pliocene), Jujuy Province, northwestern Argentina. This is the first record of a toxodontid from the Eastern Cordillera. The specimen is housed at the Museo de Geología, Mineralogía y Paleontología, Instituto de Geología y Minería de la Universidad Nacional de Jujuy. It consists of an incomplete mandible preserving the right mandibular ramus with part of the dental series, partially preserved symphysis with all the incisors, and a small portion of the left ramus without teeth. The following characters distinguish it as a new taxon: symphysis long and narrow with slight divergence of its lateral borders; strong procumbence of lower incisors and deeply implanted i3; chin angle lower than in X. major and X. cristatus and bulging labial keel limiting strong lateral concavities. Comparative analysis in the context of the recently revised Neogene Toxodontidae indicates that the Maimará specimen shares mandibular features and dental characters with Xotodon and Mixotoxodon, differing from the latter by the more upraised symphysis. The phylogenetic position of Xotodon maimarensis n. sp. supports the taxonomic interpretation of the studied specimen as a new species of Xotodon. This new Toxodontidae increases the knowledge of the diversity and radiation of this group of notoungulates in northwest Argentina.

Total evidence analysis of the phylogenetic relationships of bandicoots and bilbies (Marsupialia: Peramelemorphia): reassessment of two species and description of a new species

Zootaxa ◽  
2018 ◽  
Vol 4378 (2) ◽  
pp. 224 ◽  
Author(s):  
KENNY J. TRAVOUILLON ◽  
MATTHEW J. PHILLIPS
Keyword(s):  
New Species ◽  
Late Miocene ◽  
Phylogenetic Relationships ◽  
Taxonomic Status ◽  
Molecular Data ◽  
Total Evidence ◽  
Bayesian Analyses ◽  
Early Pliocene ◽  
Evidence Analysis ◽  
A New Species

The phylogenetic relationships of bandicoots and bilbies have been somewhat problematic, with conflicting results between morphological work and molecular data. This conflict makes it difficult to assess the taxonomic status of species and subspecies within this order, and also prevents accurate evolutionary assessments. Here, we present a new total evidence analysis, combining the latest cranio-dental morphological matrix containing both modern and fossil taxa, with molecular data from GenBank. Several subspecies were scored in the morphological dataset to match the molecular data available. Both parsimony and Bayesian analyses were performed, giving similar topologies except for the position of four fossil taxa. Total evidence dating places the peramelemorphian crown origin close to the Oligocene/Miocene boundary, and the radiations of most modern genera beginning in the Late Miocene or Early Pliocene. Our results show that some species and subspecies require taxonomic reassessment, and are revised here. We also describe a new, extinct species from the Nullarbor region. This suggests that the number of recently extinct peramelemorphian species is likely to further increase. 

Neogastropod molluscs from the Miocene of western Amazonia, with comments on marine to freshwater transitions in molluscs

2002 ◽  
Vol 76 (2) ◽  
pp. 265-270 ◽  
Author(s):  
Geerat J. Vermeij ◽  
Frank P. Wesselingh
Keyword(s):  
New Species ◽  
Water Level ◽  
Late Miocene ◽  
Southeast Asian ◽  
South American ◽  
Seasonal Fluctuations ◽  
Early Late ◽  
A New Species ◽  
Freshwater Environments

Two neogastropod species occur in brackish intervals in the Pebas Formation (late Middle to early Late Miocene) of Peru and Colombia in western Amazonia. Purpura woodwardi Roxo, 1924, is assigned to Melongena Schumacher, 1817 (Melongenidae), and ?Nassarius reductus (Nassariidae) is recognized as a new species. These gastropods are among the very few marine invaders in the otherwise freshwater Pebas fauna. The small number of marine to freshwater transitions among South American molluscs contrasts with the situation among South American fishes and southeast Asian molluscs. It may be related to seasonal fluctuations in water level and anoxia in present-day South American freshwater environments, as well as to predation and productivity.

scholarly journals New species of the genus Ypsolopha Latreille, 1796 (Lepidoptera: Ypsolophidae) from the south of the Russian Far East

2020 ◽  
Vol 421 ◽  
pp. 14-26
Author(s):  
M.G. Ponomarenko ◽  
◽  
Keyword(s):  
New Species ◽  
Genetic Distance ◽  
East Asian ◽  
Russian Far East ◽  
Far East ◽  
The South ◽  
Asian Species ◽  
A New Species ◽  
The Russian Far East

An analysis of the mtCOI sequences in the species from the genus Ypsolopha Latreille, 1796 made it possible to confirm a new species for science, Y. occultatella sp. n., morphologically similar to the East Asian species Y. yasudai Moriuti, 1964. The genetic distance between the mtCOI sequences in Y. occultatella sp. n. and Y. yasudai is 0,066–0,069 (6,6–6,9 %). However, the minimal genetic distance, 0,038–0,042 (3,8–4,2 %), was determined between the mtCOI sequences of the new species and Y. blandella (Christoph, 1882), while these species differ well in the forewing pattern.

scholarly journals A new species of Xylophis Beddome, 1878 (Serpentes: Pareidae) from the southern Western Ghats of India

2021 ◽  
Vol 71 ◽  
pp. 219-230
Author(s):  
Surya Narayanan ◽  
Pratyush P. Mohapatra ◽  
Amirtha Balan ◽  
Sandeep Das ◽  
David J. Gower
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Genetic Distance ◽  
Dna Sequences ◽  
Western Ghats ◽  
White Collar ◽  
The Body ◽  
Western Ghats Of India ◽  
Southern Western Ghats ◽  
A New Species

We reassess the taxonomy of the Indian endemic snake Xylophis captaini and describe a new species of Xylophis based on a type series of three specimens from the southernmost part of mainland India. Xylophis deepakisp. nov. is most similar phenotypically to X. captaini, with which it was previously confused. The new species differs from X. captaini by having a broader, more regular and ventrally extensive off-white collar, more ventral scales (117–125 versus 102–113), and by lack of flounces on the body and proximal lobes of the hemipenis. Phylogenetic analysis of mitochondrial 16S DNA sequences strongly indicates that the new species is most closely related to X. captaini, differing from it by an uncorrected pairwise genetic distance of 4.2%. A revised key to the species of Xylophis is provided.

A new species of the genus Rhynchocalamus Günther, 1864 (Reptilia: Squamata: Colubridae) from Ilam province in western Iran

Zootaxa ◽  
2017 ◽  
Vol 4282 (3) ◽  
pp. 473 ◽  
Author(s):  
BEHZAD FATHINIA ◽  
ESKANDAR RASTEGAR-POUYANI ◽  
NASRULLAH RASTEGAR-POUYANI ◽  
HAMID DARVISHNIA
Keyword(s):  
New Species ◽  
Genetic Distance ◽  
Head And Neck ◽  
Cytb Gene ◽  
Color Patterns ◽  
Molecular Analyses ◽  
Western Iran ◽  
A New Species

A new colubrid snake, Rhynchocalamus ilamensis sp. nov., is described from Ilam province, western Iran. The new species differs from other described congeners using both morphological and molecular analyses. Morphologically, the head and neck color patterns are the most obvious distinguishing traits of this species from its congeners. The new species is separated from other species of Rhynchocalamus by a genetic distance of 9–13% in the mitochondrial Cytb gene, with R. satunini and R. melanocephalus as the closest and farthest relatives, respectively. As well, a color-based revised key to the genus is provided. 

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