A new species of the genus Oxymycterus (Mammalia: Rodentia: Cricetidae) from the vanishing Yungas of Argentina

Zootaxa ◽  
2008 ◽  
Vol 1911 (1) ◽  
pp. 31-51 ◽  
Author(s):  
J. PABLO JAYAT ◽  
GUILLERMO D’ELÍA ◽  
ULYSES F. J. PARDIÑAS ◽  
M. DANIELA MIOTTI ◽  
PABLO E. ORTIZ
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Cytochrome B ◽  
Dna Sequences ◽  
White Spot ◽  
Advanced Level ◽  
Northwestern Argentina ◽  
Molecular Studies ◽  
A New Species

Morphological and molecular studies allowed us to recognize a new species of Oxymycterus from the southern end of the Yungas of Argentina. External morphologic traits allow the new species, Oxymycterus wayku, to be differentiated from O. paramensis and O. akodontius, the two currently recognized species for northwestern Argentina, as well as from the remaining species of the genus. Those traits include very dark general coloration, ears covered with nearly black hairs, a white spot on the chin, and claws on fore and hind feet long and robust. Cranial characteristics of the new species include wide and relatively shallow zygomatic notches, proportionally short incisive foramina and molar series, and a relatively robust braincase compared to O. paramensis. Phylogenetic analysis based on cytochrome b DNA sequences corroborates the distinctiveness of Oxymycterus wayku n. sp. Observed divergence values support this distinction. This new species is particularly important from a conservation viewpoint due to its rarity and the advanced level of alteration of its habitat.

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.

Coltriciella multipileata (Agaricomycetes, Hymenochaetaceae), a new species from Mexico, related to ectomycorrhizal lineages  

Phytotaxa ◽  
2020 ◽  
Vol 475 (2) ◽  
pp. 79-90
Author(s):  
RICARDO VALENZUELA ◽  
TANIA RAYMUNDO ◽  
CONY DECOCK ◽  
MA BLANCA NIEVES LARA-CHÁVEZ ◽  
ISOLDA LUNA-VEGA ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Ribosomal Dna ◽  
Dna Sequences ◽  
Preliminary Analysis ◽  
Sister Group ◽  
High Rate ◽  
Pinus Patula ◽  
A New Species ◽  
28S Ribosomal Dna

Coltriciella multipileata is described here as a new species from Mexico. The species grow on soils in open areas at the vicinity of living trees of Pinus patula, and its known only from the Parque Recreativo Los Colomos, Jalisco. The phylogenetic analysis based on partial nuclear 28S ribosomal DNA sequences, recovered Coltriciella multipileata as sister group with a specimen reported as ectomycorrhizal, and closely related with other two species that are considered saprophitic. According with our preliminary analysis of character states reconstruction, the ectomycorrhizal condition appeared early in the Coltriciella clade, with a high rate of transitions between ectomycorrhizal and saprophitic conditions. A key for species similar to Coltriciella multipileata is presented.

Floral similarity and vegetative divergence in a new species of Bletia (Orchidaceae) from Mexico

Phytotaxa ◽  
2016 ◽  
Vol 275 (2) ◽  
pp. 112 ◽  
Author(s):  
GERARDO A. SALAZAR ◽  
CÉSAR CHÁVEZ-RENDÓN ◽  
ALEJANDRO DE ÁVILA B. ◽  
ROLANDO JIMÉNEZ-MACHORRO
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Dna Sequences ◽  
Habitat Specificity ◽  
Its Dna Sequences ◽  
Two Populations ◽  
A New Species

Bletia mixtecana, a new species from Oaxaca, Mexico is described and illustrated. This species is florally similar to B. parkinsonii but differs in its aerial thickened stems (‘pseudobulbs’) and several floral attributes. A phylogenetic analysis of nuclear ribosomal ITS DNA sequences indicates that B. mixtecana and B. parkinsonii are not closely related, suggesting that floral similarity represents either parallelism or shared ancestral (symplesiomorphic) traits. The new species is a strict gypsophile known only from two populations and it qualifies as endangered based on the small number of known populations and individuals, high habitat specificity and the observed loss of plants at one of the two known locations.

Ottelia guanyangensis (Hydrocharitaceae), a new species from southwestern China

Phytotaxa ◽  
2018 ◽  
Vol 361 (3) ◽  
pp. 294 ◽  
Author(s):  
ZHI-ZHONG LI ◽  
KUO LIAO ◽  
CHUN-YU ZOU ◽  
YAN LIU ◽  
GUANG-WAN HU ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Dna Sequences ◽  
Internal Transcribed Spacer ◽  
Aquatic Plant ◽  
Nuclear Dna ◽  
Southwestern China ◽  
Molecular Phylogenetic ◽  
Chloroplast Dna Sequences ◽  
A New Species

Ottelia guanyangensis (Hydrocharitaceae), a new species from southwestern China, is described and illustrated. This aquatic plant is a perennial, submersed herb with bisexual flowers and a hexagonal-cylindric fruit. It is related to O. acuminata var. songmingensis and O. balansae but differs from these two taxa by its bisexual flowers, spathe with 2–5 flowers, trinerved leaf with obvious cross veins, and a winged, hexagonal-cylindric fruit. Molecular phylogenetic analysis based on nuclear DNA internal transcribed spacer (ITS) sequences and three chloroplast DNA sequences (rbcL, trnK5’ intron and trnS-trnG) resolves O. guanyangensis as a distinct clade, which further justifies its recognition as a new species.

Molecular phylogeny and morphology reveal a new species of Amauroderma (Basidiomycota) from China

Phytotaxa ◽  
2016 ◽  
Vol 260 (1) ◽  
pp. 47 ◽  
Author(s):  
JIE SONG ◽  
JIA-HUI XING ◽  
CONY DECOCK ◽  
XIAO-LAN HE ◽  
BAO-KAI CUI
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Phylogeny ◽  
Ribosomal Rna ◽  
Dna Sequences ◽  
Internal Transcribed Spacer ◽  
Pore Surface ◽  
Ribosomal Rna Gene ◽  
A New Species

The phylogeny of Amauroderma and related genera were studied using DNA sequences from the internal transcribed spacer (ITS) and 28S nuclear ribosomal RNA gene regions. Amauroderma concentricum sp. nov. is described. The species is characterized by the yellowish brown to reddish brown pileal surface with concentric zones, a white pore surface unchanged when bruised, single to multiple stipes, small pores (4–5 per mm), and subglobose to globose and double-walled basidiospores, 8–9.2 × 7.2–8 µm. The phylogenetic analysis presented here confirmed that Amauroderma as traditionally accepted is not monophyletic.

Phyllanthus kaweesakii (Phyllanthaceae), a new species from Thailand

Botany ◽  
2017 ◽  
Vol 95 (6) ◽  
pp. 567-577 ◽  
Author(s):  
Pimwadee Pornpongrungrueng ◽  
John A.N. Parnell ◽  
Trevor R. Hodkinson ◽  
Pranom Chantaranothai
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Dna Sequences ◽  
Pollen Morphology ◽  
Conservation Status ◽  
Molecular Phylogenetic Analysis ◽  
Stem Base ◽  
Its Regions ◽  
Molecular Phylogenetic ◽  
A New Species

Phyllanthus kaweesakii Pornp., Chantar. & J.Parn. sp. nov. is newly described from the limestone mountain ridges in the northeast of Thailand. Comparison of morphology, anatomy, pollen morphology, and DNA sequences of this species with the most similar existing species P. mirabilis Müll.Arg. was undertaken. The results indicated that the two taxa are different in morphology, especially habit, stem base, and inflorescence, but that their pollen morphology and anatomy are similar. The molecular phylogenetic analysis, based on sequences of the plastid matK and nuclear ribosomal ITS regions, supported separation of the two taxa. This new species is described and illustrated, and its conservation status is discussed.

Rhytidhysteron mangrovei (Hysteriaceae), a new species from mangroves in Phetchaburi Province, Thailand

Phytotaxa ◽  
2019 ◽  
Vol 401 (3) ◽  
pp. 166 ◽  
Author(s):  
VINIT KUMAR ◽  
RATCHADAWAN CHEEWANGKOON ◽  
KASUN M. THAMBUGALA ◽  
GARETH E.B. JONES ◽  
RASHIKA S. BRAHMANAGE ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Dna Sequences ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Mangrove Forests ◽  
Morphological Comparison ◽  
Dna Sequence Data ◽  
Mangrove Tree ◽  
A New Species

During an investigation of micro-fungi inhabiting mangrove forests, a new species of Rhytidhysteron was collected and isolated from dead twigs of a mangrove tree. Rhytidhysteron mangrovei sp. nov. is introduced, described, illustrated and compared with accepted species in the genus. Morphological comparison based on the size of exciple, the appearance of ascomata and ascospore septations and size as well as the multi-gene phylogenetic analyses based on LSU, ITS and TEF DNA sequences support its establishment in Rhytidhysteron. Placement of the genus in Hysteriaceae is also well-supported. In addition, phylogenetic analysis and DNA sequence data indicate that Rhytidhysteron mangrovei is closely related to Rhytidhysteron thailandicum. However, R. mangrovei is morphologically distinct from R. thailandicum, by having a relatively smaller size of exciple and perpendicularly rough-striate ascomata.

Morphometric and molecular analysis of the Encarsia inaron species-group (Hymenoptera: Aphelinidae), parasitoids of whiteflies (Hemiptera: Aleyrodidae)

2002 ◽  
Vol 92 (2) ◽  
pp. 165-175 ◽  
Author(s):  
S. Manzari ◽  
A. Polaszek ◽  
R. Belshaw ◽  
D.L.J. Quicke
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Biology ◽  
Morphometric Analysis ◽  
Dna Sequences ◽  
Related Species ◽  
Host Plants ◽  
Species Group ◽  
Biology Laboratory ◽  
A New Species

AbstractSeveral series of host-reared specimens of an Encarsia species, initially thought to be the cosmopolitan Encarsia inaron (Walker), were collected in the Azores Islands (Portugal). Subsequent morphometric analysis supported the presence of two species: E. inaron and a new species, described herein as Encarsia estrellae Manzari & Polaszek sp. n.Encarsia estrellae was reared from Aleyrodes singularis Danzig, A. ?singularis, and Bemisia sp. afer-group on several host plants. In addition, the D2 region of the 28S rDNA gene was sequenced in eight individuals belonging to these species, as well as single representatives of two closely related and one distantly related species. Phylogenetic analysis of these DNA sequences, together with 23 additional Encarsia sequences retrieved from the European Molecular Biology Laboratory (EMBL) and GenBank databases, further supported the specific status of E. estrellae, and the placement of E. dichroa (Mercet) in the E. inaron species-group. Additionally, E. inaron is redescribed and some taxonomic problems in the E. inaron species-group are discussed.

A new species of Pseudocalotes (Squamata: Agamidae) from the Bukit Barisan Range of Sumatra with an Estimation of its phylogeny

Zootaxa ◽  
2017 ◽  
Vol 4276 (2) ◽  
pp. 215 ◽  
Author(s):  
MICHAEL B. HARVEY ◽  
KYLE SHANEY ◽  
AMIR HAMIDY ◽  
NIA KURNIAWAN ◽  
ERIC N. SMITH
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Dna Sequences ◽  
Morphological Characters ◽  
Monophyletic Group ◽  
Western Coast ◽  
Montane Forests ◽  
Its Phylogeny ◽  
Fifth Toe ◽  
A New Species

We describe a new species of Pseudocalotes from montane forests of the central, western coast of Sumatra. The combination of 3 or 4 interoculabials, slightly enlarged and heavily keeled scales on the lower flanks, a white scapular spot, a relatively long fifth toe, bicarinate lamellae at the base of Toe III, absence of a postrictal modified scale, and three rows of paravertebrals directed dorsally and posteriorly distinguishes the new species from its congeners on Sumatra and Java. Among the new characters defined in this study, counts of subdigital lamellae within the “span of Toe V” proved particularly useful for diagnosing species of Pseudocalotes. Phylogenetic analysis of DNA sequences identified a monophyletic group containing the Sumatran and Javan Pseudocalotes. Based on the phylogeny, we define a P. cybelidermus Group containing P. cybelidermus and P. guttalineatus and a P. tympanistriga Group containing P. tympanistriga, P. rhammanotus, and the new species. Combinations of five morphological characters define each of these two clades. As currently defined, Pseudocalotes is polyphyletic; Javan and Sumatran species are more closely related to other draconines such as Dendragama boulengeri than they are to some mainland species. 

Garra dengba, a new species of cyprinid fish (Pisces: Teleostei) from eastern Tibet, China

Zootaxa ◽  
2018 ◽  
Vol 4476 (1) ◽  
pp. 94
Author(s):  
SHU-QING DENG ◽  
LIANG CAO ◽  
E ZHANG
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Cytochrome B ◽  
Lateral Line ◽  
Cyprinid Fish ◽  
Brahmaputra River ◽  
Eastern Tibet ◽  
Fin Rays ◽  
Molecular Phylogenetic ◽  
A New Species

Garra dengba is here described from the Chayu-Qu, a tributary flowing into the Brahmaputra River, in Chayu County, eastern Tibet, China. It shares the presence of an incipient proboscis on the snout with G. arupi, G. elongata, G. gravelyi, G. kalpangi, and G. rotundinasus, but is distinguished from these five species in having, among other features, fewer branched dorsal- and anal-fin rays and more perforated lateral-line scales. Its validity was also confirmed by a molecular phylogenetic analysis based on the cytochrome b gene.

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