scholarly journals Geographic Variation of the Brachypterous Grasshopper Parapodisma setouchiensis Group in Western Honshu, with Its Taxonomic Revision

1999 ◽  
Vol 4 (1) ◽  
pp. 43-61 ◽  
Author(s):  
Yasushi Kawakami
Keyword(s):  
Geographic Variation ◽  
Taxonomic Revision

Geographic variation of the Anderson’s Niviventer (Niviventer andersoni) (Thomas, 1911) (Rodentia: Muridae) of two new subspecies in China verified with cranial morphometric variables and pelage characteristics

Zootaxa ◽  
2009 ◽  
Vol 2196 (1) ◽  
pp. 48-58 ◽  
Author(s):  
SONG LI ◽  
JUNXING YANG
Keyword(s):  
Geographic Variation ◽  
Yunnan Province ◽  
Principal Component ◽  
Taxonomic Revision ◽  
Western Yunnan ◽  
Principal Component Analyses ◽  
Discriminant Analyses ◽  
Southern Shaanxi ◽  
First Time ◽  
Northwestern Yunnan

A total of 66 specimens of Niviventer andersoni with intact skulls was investigated on pelage characteristics and cranial morphometric variables. The data were subjected to principal component analyses as well as to discriminant analyses, and measurement overlap was studied as compared with the coefficient of difference. The results indicate that three subspecies of N. andersoni can be recognized in China, including N. a. andersoni broadly distributed from northwestern Yunnan, Sichuan, northward to southern Shaanxi, and eastward to Hubei, N. a. pianmaensis subsp. nov. in western Yunnan, and N. a. ailaoshanensis subsp. nov. in Mt. Ailaoshan, central Yunnan province. Our study for the first time validates its subspecies differentiation that is most likely related to intra-specific geographic variation. In addition, a taxonomic revision of Niviventer andersoni in China is described.

scholarly journals Crypsis and convergence: integrative taxonomic revision of the Gehyra australis group (Squamata: Gekkonidae) from northern Australia

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e7971 ◽  
Author(s):  
Paul M. Oliver ◽  
Audrey Miranda Prasetya ◽  
Leonardo G. Tedeschi ◽  
Jessica Fenker ◽  
Ryan J. Ellis ◽  
...  
Keyword(s):  
Geographic Variation ◽  
Taxonomic Revision ◽  
Substantial Improvement ◽  
Morphological Evidence ◽  
Northern Australia ◽  
Geographic Boundaries ◽  
Snp Data ◽  
Exon Capture ◽  
Species Complexes ◽  
Genetic Clusters

For over two decades, assessments of geographic variation in mtDNA and small numbers of nuclear loci have revealed morphologically similar, but genetically divergent, intraspecific lineages in lizards from around the world. Subsequent morphological analyses often find subtle corresponding diagnostic characters to support the distinctiveness of lineages, but occasionally do not. In recent years it has become increasingly possible to survey geographic variation by sequencing thousands of loci, enabling more rigorous assessment of species boundaries across morphologically similar lineages. Here we take this approach, adding new, geographically extensive SNP data to existing mtDNA and exon capture datasets for the Gehyra australis and G. koira species complexes of gecko from northern Australia. The combination of exon-based phylogenetics with dense spatial sampling of mitochondrial DNA sequencing, SNP-based tests for introgression at lineage boundaries and newly-collected morphological evidence supports the recognition of nine species, six of which are newly described here. Detection of discrete genetic clusters using new SNP data was especially convincing where candidate taxa were continuously sampled across their distributions up to and across geographic boundaries with analyses revealing no admixture. Some species defined herein appear to be truly cryptic, showing little, if any, diagnostic morphological variation. As these SNP-based approaches are progressively applied, and with all due conservatism, we can expect to see a substantial improvement in our ability to delineate and name cryptic species, especially in taxa for which previous approaches have struggled to resolve taxonomic boundaries.

A taxonomic revision of frogs of the genus Cryptobatrachus (Anura: Hemiphractidae)

Zootaxa ◽  
2008 ◽  
Vol 1883 (1) ◽  
pp. 28 ◽  
Author(s):  
JOHN D. LYNCH
Keyword(s):  
Geographic Variation ◽  
Sierra Nevada ◽  
Taxonomic Revision ◽  
Additional Species ◽  
Altitudinal Range ◽  
Adhesive Pads

Hemiphractid frogs of the genus Cryptobatrachus are nearly exclusive to Colombia and are distributed over an altitudinal range between 360 and 2400 meters on the three cordilleras and the massif of the Sierra Nevada de Santa Marta. To the three species currently recognized, three additional species are named (C. conditus, C. pedroruizi, and C. ruthveni). The genus is monophyletic and all but the cis-Andean C. nicefori form a clade (defined by the presence of adhesive pads on some subarticular tubercles of the hand and foot). All but C. fuhrmanni and C. nicefori form an additional clade in northern Colombia. Two (or three) species are found on the Sierra Nevada de Santa Marta and two other species are found on the Serranía de Perijá. The most widely distributed species (C. fuhrmanni) occurs on all three Andean cordilleras without apparent geographic variation.

A TAXONOMIC REVISION OF THE GENUS CORDYLOSPASTA (COLEOPTERA: MELOIDAE) WITH AN ANALYSIS OF GEOGRAPHIC VARIATION IN C. OPACA

1972 ◽  
Vol 104 (8) ◽  
pp. 1161-1180 ◽  
Author(s):  
John D. Pinto
Keyword(s):  
Geographic Variation ◽  
North American ◽  
Southern California ◽  
Taxonomic Revision ◽  
Current Concept ◽  
Anatomical Characteristics ◽  
Infraspecific Taxa ◽  
Anatomical Characters ◽  
Informal Approach

AbstractDistributional and anatomical characteristics of the species of the western North American genus Cordylospasta are analyzed. The current concept of this genus is a considerable modification from that of earlier classifications.Of the two species belonging to Cordylospasta, C. fulleri Horn is unique among North American blister beetles in having antennae with 8 to 10 antennal segments. This species is strictly allopatric to the second species, C. opaca (Horn), in which the antennae are 11-segmented.Step-clinal geographic variation in seven anatomical characters is recorded for C. opaca. On this basis six biological races are recognized as occurring in central and southern California. These are considered the equivalent of subspecies. An informal approach to the recognition of these infraspecific taxa is followed since, due to limited material, interracial reproductive relationships cannot be inferred confidently at the present time.

Geographic Variation and Taxonomic Revision of Mink (Mustela vison) in Florida

1989 ◽  
Vol 70 (2) ◽  
pp. 241-252 ◽  
Author(s):  
S. R. Humphrey ◽  
H. W. Setzer
Keyword(s):  
Geographic Variation ◽  
Taxonomic Revision ◽  
Mustela Vison

A taxonomic revision of the Musician Wren, Cyphorhinus arada (Aves, Troglodytidae), reveals the existence of six valid species endemic to the Amazon basin

Zootaxa ◽  
2016 ◽  
Vol 4193 (3) ◽  
pp. 541
Author(s):  
FERNANDA BOCALINI ◽  
LUÍS FÁBIO SILVEIRA
Keyword(s):  
Geographic Variation ◽  
Amazon Basin ◽  
Species Concept ◽  
Taxonomic Revision ◽  
Valid Species ◽  
Museum Specimens ◽  
Phylogenetic Species ◽  
Phylogenetic Species Concept ◽  
Major Variation

Cyphorhinus arada, an Amazonian endemic, shows considerable geographic variation in plumage that has led to the recognition of eight subspecies. These include C. a. arada, C. a. salvini, C. a. modulator, C. a. transfluvialis, C. a. interpositus, C. a. griseolateralis, C. a. urbanoi and C. a. faroensis. However, a thorough taxonomic revision of the Cyphorhinus arada complex has never been undertaken, so we revise the taxonomy based on morphological and vocal characters. We analyzed a total of 515 museum specimens and 146 voice recordings representing and encompassing the distributions of all named taxa, including those currently considered not valid. Vocal analyses showed major variation within the complex, from which several trends could be identified between populations. We concluded that six species (C. arada, C. transfluvialis, C. modulator, C. salvini, C. interpositus and C. griseolateralis) should be recognized under the Phylogenetic Species Concept based on the diagnosis of stable plumage and vocal patterns of each. 

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