scholarly journals Las gimnospermas de los bosques mesófilos de montaña de la Huasteca Hidalguense, México

2017 ◽  
pp. 69
Author(s):  
Raúl Contreras-Medina ◽  
Isolda Luna-Vega ◽  
Othón Alcántara-Ayala
Keyword(s):  
Species Identification ◽  
Geographical Distribution ◽  
Cloud Forests ◽  
Reference Specimens ◽  
Floristic Treatment

A floristic treatment of the gymnosperms that inhabit the cloud forests of the Huasteca Hidalguense was undertaken; five families, six genera, and ten species were registered. Cupressaceae is represented by the genus Cupressus with one species, Pinaceae by Pinus with four species, Podocarpaceae by Podocarpus with one species, Taxaceae by Taxus with one species, and Zamiaceae by two genera, Ceratozarnia and Zarnia, with one and two species respectively. A dichotomic key for species identification is included, as well as descriptions, some data about their ecology, geographical distribution, and reference specimens examined.

A revision of the neotropical Mucuna species (Leguminosae—Papilionoideae)

Phytotaxa ◽  
2018 ◽  
Vol 337 (1) ◽  
pp. 1 ◽  
Author(s):  
TÂNIA M. DE MOURA ◽  
GWILYM P. LEWIS ◽  
VIDAL F. MANSANO ◽  
ANA M. G. A. TOZZI
Keyword(s):  
New Species ◽  
Species Identification ◽  
Type Specimen ◽  
Identification Key ◽  
Tropical Species ◽  
Distribution Maps ◽  
Taxonomic Treatment ◽  
Neotropical Species ◽  
Conservation Assessments ◽  
Floristic Treatment

The genus Mucuna comprises approximately 105 tropical and sub-tropical species, with the highest diversity occurring in the Paleotropics. In the Neotropics, 13 new species have been described recently and a number of regional floras have been published. A recent floristic treatment for Colombia has summarized the Mucuna species found in the Neotropics, but since then many new species and new geographical records have been published. A complete taxonomic treatment of all neotropical species and an identification key to all neotropical taxa is currently lacking. The aim of this study is to present a complete taxonomic account of the species of Mucuna occurring in the Neotropics. Descriptions of 25 taxa (24 species and one variety) are included in the treatment, including type specimen details, synonymy, illustrations, distribution maps, and preliminary conservation assessments for each species, together with a species identification key.

Taxonomy of the genus Craspedomerus Bernhauer, 1911 (Coleoptera: Staphylinidae: Philonthina) from China

Zootaxa ◽  
2010 ◽  
Vol 2506 (1) ◽  
pp. 1 ◽  
Author(s):  
LIANG LI ◽  
HONG-ZHANG ZHOU
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Species Identification ◽  
Geographical Distribution ◽  
Additional Species ◽  
Three New Species ◽  
First Time ◽  
Scanning Electron

Three new species of the genus Craspedomerus from China are described and illustrated: C. giganteus Li & Zhou sp. n. from Sichuan, C. gongshanus Li & Zhou sp. n. from Yunnan and C. zhangi Li & Zhou sp. n. from Tibet. Four species are reported for the first time from China: C. sinetuber (Coiffait, 1977a) from Tibet, C. cyanipennis Scheerpeltz, 1976b, C. ganeshensis Coiffait, 1983 and C. glenoides (Schubert, 1908) from Yunnan. These four and two additional species previously recorded from China (C. beckeri Bernhauer, 1934 and C. violaceipennis Cameron, 1928 are redescribed and illustrated. Sensory peg setae located on the underside of the paramere of the aedeagus of all nine Chinese species are compared using scanning electron microscopy (SEM) and the result shows that this character is useful for species identification. A key to the Chinese species of Craspedomerus is presented and geographical distribution of all sixteen species of Craspedomerus is mapped.

scholarly journals A revision of the geographical distributions of the shrews Crocidura tanakae and C. attenuata based on genetic species identification in the mainland of China

ZooKeys ◽  
2019 ◽  
Vol 869 ◽  
pp. 147-160 ◽  
Author(s):  
Yaoyao Li ◽  
Haotian Li ◽  
Masaharu Motokawa ◽  
Yi Wu ◽  
Masashi Harada ◽  
...  
Keyword(s):  
Species Identification ◽  
Geographical Distribution ◽  
Endemic Species ◽  
Taxonomic Status ◽  
Hainan Island ◽  
Genetic Species Identification ◽  
Taiwan Island ◽  
The Mainland Of China ◽  
Size And Morphology ◽  
Genetic Species

The Taiwanese gray shrew (Crocidura tanakae) and Asian gray shrew (C. attenuata) are so similar in size and morphology that the taxonomic status of the former has changed several times since its description; C. tanakae has also been regarded as an endemic species of Taiwan Island. In recent years, molecular identification has led to several reports of C. tanakae being distributed in the mainland of China. In this study, we determine the geographical distribution of C. attenuata and C. tanakae based on more than one hundred specimens collected during 2000 to 2018 over a wide area covering the traditional ranges of the two species in the mainland of China, and show a substantial revision of their distributions. Among 110 individuals, 33 C. attenuata and 77 C. tanakae were identified by Cytb gene and morphologies. Our results show, (1) C. attenuata and C. tanakae are distributed sympatrically in the mainland of China; (2) contrary to the previous reports, the distribution range of C. attenuata is restricted and much smaller than that of C. tanakae in the mainland of China; (3) Hainan Island, like Taiwan Island, is inhabited by C. tanakae only according to the present data.

scholarly journals Agaricus section Brunneopicti: a phylogenetic reconstruction with descriptions of four new taxa 

Phytotaxa ◽  
2015 ◽  
Vol 192 (3) ◽  
pp. 145 ◽  
Author(s):  
Jie Chen ◽  
Ruilin Zhao ◽  
Luis A Parra ◽  
Atsu K Guelly ◽  
André De Kesel ◽  
...  
Keyword(s):  
Species Richness ◽  
New Species ◽  
Species Identification ◽  
Geographical Distribution ◽  
Morphological Study ◽  
Phylogenetic Analyses ◽  
Phylogenetic Reconstruction ◽  
Bayesian Analyses ◽  
Dichotomous Key ◽  
The Veil

Agaricus is a genus of saprobic basidiomycetes including species of nutritional and medicinal interest. Historically the temperate species have been grouped into eight classical sections. Recent phylogenetic analyses however, revealed that two-thirds of the tropical taxa do not cluster in these sections, but form exclusively tropical clades. Seven (TR I to TR VII) strongly supported tropical clades have been revealed and it was hypothesized that clade TR I might represent Agaricus section Brunneopicti. This section was initially characterized by the presence of punctiform squamules, the remains of the veil, on the pileus and stipe. The present morphological study and phylogenetic ML, MP and Bayesian analyses based on ITS1+2 sequences show that clade TR I corresponds to Agaricus section Brunneopicti and includes 16 taxa grouped in four strongly supported subclades and two isolated branches. The six species with punctiform squamules which initially characterized the section constitute one of these subclades. We propose the new replacement name Agaricus brunneopunctatus for the illegitimate name Agaricus brunneopictus. All 16 species are discussed, full descriptions are provided for five, among them, A. brunneosquamulosus, A. niveogranulatus, A. sordidocarpus and A. toluenolens are described as new species. We also report on certain members of section Brunneopicti traits which generally characterize species belonging to other sections. These shared characters raise the issue of their origin and complicate the systematics and the identification of the tropical Agaricus species. An artificial dichotomous key is presented for species identification. Section Brunneopicti is the first reconstructed section of tropical Agaricus. Its known geographical distribution range is strictly palaeotropical. We predict that the species richness of other somewhat forgotten or new tropical sections will also increase in coming years.

Geographical distribution and species identification of human filariasis and onchocerciasis in Bioko Island, Equatorial Guinea

Acta Tropica ◽  
2018 ◽  
Vol 180 ◽  
pp. 12-17 ◽  
Author(s):  
Thuy-Huong Ta ◽  
Laura Moya ◽  
Justino Nguema ◽  
Pilar Aparicio ◽  
María Miguel-Oteo ◽  
...  
Keyword(s):  
Species Identification ◽  
Geographical Distribution ◽  
Equatorial Guinea ◽  
Bioko Island

scholarly journals Terminalia s.s. (Combretaceae) in Maranhão state, Brazil

Rodriguésia ◽  
2020 ◽  
Vol 71 ◽  
Author(s):  
Rayane de Tasso Moreira Ribeiro ◽  
Natanael Costa Rebouças ◽  
Maria Iracema Bezerra Loiola ◽  
Margareth Ferreira de Sales
Keyword(s):  
Geographical Distribution ◽  
National Park ◽  
Conservation Status ◽  
The State ◽  
Identification Key ◽  
Conservation Units ◽  
Floristic Treatment

Abstract We present the floristic treatment of the Terminalia species occurring in the state of Maranhão. This study was based on the analysis of national and international herbaria. Six species were recorded from the state: Terminalia actinophylla, T. amazonia, T. dichotoma, T. fagifolia, T. glabrescens, and T. lucida, with one endemic (T. actinophylla) to Brazil. Taxa were commonly recorded in dry Savanna environments (cerrado). Only the species Terminalia fagifolia and T. lucida occur in conservation units in Maranhão, specifically in Mirador State Park, Chapada das Mesas National Park and Ecological Sanctuary of Pedra Caída. In addition to morphological descriptions, this study includes an identification key, illustrations, and comments about taxonomic affinities, geographical distribution, ecology, conservation status, and phenology of the species.

scholarly journals Notes on the systematics of Cuscuta sect. Subulatae (subg. Grammica) with the description of Cuscuta mantiqueirana, a new species from Brazil

PhytoKeys ◽  
2021 ◽  
Vol 184 ◽  
pp. 27-44
Author(s):  
Mihai Costea ◽  
Simone Soares da Silva ◽  
Rosangela Simao-Bianchini ◽  
Ana Rita G. Simoes ◽  
Sasa Stefanovic
Keyword(s):  
New Species ◽  
Host Range ◽  
Geographical Distribution ◽  
Phylogenetic Relationships ◽  
Distal Part ◽  
Phylogenetic Analyses ◽  
Cloud Forests ◽  
Morphological Comparison ◽  
A New Species

Cuscuta mantiqueirana Costea, S.S. Silva & Sim.-Bianch. a new species from montane cloud forests of the Serra da Mantiqueira, Brazil, is described and illustrated. The morphological and phylogenetic analyses revealed that the new species belongs to sect. Subulatae of subg. Grammica. The new species is related to C. odorata var. botryoides, C. rotundiflora and C. globiflora from which it differs in narrower calyx lobes and the presence of four stomatiferous lobes or projections at the distal part of the ovary. A detailed morphological comparison with C. odorata var. botryoides, morphologically the most similar taxon, is provided along with the geographical distribution, ecology and host range of the species. The morphological and phylogenetic relationships of the new species, as well as the diversity of stomatiferous projections, are discussed in the broader context of sect. Subulatae and subg. Grammica. Cuscuta boliviana var. paranensis is considered a synonym of C. odorata var. botryoides.

Patterns on geographical distribution and taxonomic similarity of mosses in the beech forests of Mexico

Nova Hedwigia ◽  
2019 ◽  
Vol 109 (3) ◽  
pp. 303-320
Author(s):  
Cinthia Mejía-Lara ◽  
Arturo Sánchez-González ◽  
Claudio Delgadillo-Moya
Keyword(s):  
Geographical Distribution ◽  
Beech Forest ◽  
Taxonomic Composition ◽  
Heterogeneous Environments ◽  
Beech Forests ◽  
Cloud Forests ◽  
Present Contribution ◽  
Floristic Similarity ◽  
Moss Species ◽  
Species Similarity

Studies on the distribution and taxonomic composition of moss floras in diverse types of vegetation and at a variety of geographical scales are useful for elucidating patterns of dispersal in space and time. Given this, the present contribution aims to (1) provide data on richness, habitat and geographical distribution of Mexican beech (F. grandifolia subsp. mexicana) forest mosses in the Sierra Madre Oriental (SMO), Mexico; (2) estimate moss species similarity among different beech forest areas in eastern Mexico; and (3) compare generic moss composition in temperate humid beech and cloud forests around the world. To do so, moss samples were obtained from Mexican beech forests and from the literature data for other regions. Jaccard's index was used to estimate floristic similarity among localities, and the distances between groups were represented by means of a dendrogram (UPGMA). The SMO beech forest moss flora in the state of Hidalgo contains 30 families, 54 genera, 71 species, and 4 varieties. The most representative families are Dicranaceae (10 species) and Pylaisiadelphaceae (6). Species richness is similar among localities, and floristic similarity is related to geographical distance. The most common substrates are epiphyte-lignicolous (20%), saxicolous (15.4 %), and lignicolous (7%). Most moss species in the beech forest of Mexico exhibit wide, Caribbean or boreal patterns of distribution. At the species and genus levels, floristic similarity is greater between closer localities while distant sites share a lower number of species (beech forests in Hidalgo) or genera (beech forests and cloud forests in various world regions), reflecting perhaps more heterogeneous environments with increasing distance between sites.

scholarly journals The Geographical Distribution of Human Cutaneous and Visceral Leishmania Species Identified by Molecular Methods in Iran: A Systematic Review With Meta-Analysis

2021 ◽  
Vol 9 ◽  
Author(s):  
Homa Hajjaran ◽  
Reza Saberi ◽  
Alireza Borjian ◽  
Mahdi Fakhar ◽  
Seyed Abdollah Hosseini ◽  
...  
Keyword(s):  
Systematic Review ◽  
Visceral Leishmaniasis ◽  
Species Identification ◽  
Geographical Distribution ◽  
Meta Analysis ◽  
Leishmania Species ◽  
Diagnostic Techniques ◽  
Molecular Diagnostic ◽  
Molecular Diagnostic Techniques ◽  
Causative Agents

Leishmaniasis is one of the most common vector-borne parasitic diseases in Iran. Leishmania species identification is necessary for epidemiological aspects, precise prognosis, control and treatment of the disease. We systematically searched all the studies, reports, and documentation related to species identification and geographical distribution of causative agents of cutaneous (CL), mucosal (ML), and visceral leishmaniasis (VL) using DNA-based molecular diagnostic techniques in Iran. International databases including PubMed, ScienceDirect, Embase, Google Scholar, Scopus, and Web of Science were systemically searched for English articles and Iran's databases including SID, IranMedex and Magiran were searched for Persian reports and articles. Searches were performed from 1999 to 2019 (20 years). The current review was conducted using the keywords: cutaneous leishmaniasis, visceral leishmaniasis, Leishmania species, Human, Molecular, PCR, and Iran. The study quality was evaluated using the NOS checklist. This meta-analysis procedure was accomplished using STATA, version 2.7.9. Of the 3,426 records identified in the initial search, 154 articles met inclusion criteria and qualified for the systematic review and meta-analysis. In subgroup analysis, the pooled frequency of causative agents of CL isolates was 67.3% (95% CI: 59.51–74.67%) for L. major and 32.1% (95% CI: 24.72–39.87%) for L. tropica. In addition, the pooled frequency of causative agents of VL isolates was 97.1% (95% CI: 94.6–98.8%) for L. infantum and 2.9% (95% CI: 1.12–5.37%) for L. tropica. The findings of this study showed that the main causative agents of CL and VL in Iran are L. major and L. infantum, respectively. Moreover, kinetoplast DNA (kDNA) and internal transcriber spacer (ITS) were the most used markers for identifying Leishmania species. The current study provides valuable data to encourage and direct researchers as well as public health managers in the comprehensive leishmaniasis control and prevention planning in Iran.

Chemical Species Identification in an SEM by Changes in Emitted X-Ray Energies

1974 ◽  
Vol 32 ◽  
pp. 570-571
Author(s):  
R. H. Duff
Keyword(s):  
Species Identification ◽  
Valence Electron ◽  
Chemical Species ◽  
X Rays ◽  
Chemical Bonds ◽  
Small Shift ◽  
X Ray ◽  
Electron Transitions ◽  
Peak Energy ◽  
Chemical Combination

A material irradiated with electrons emits x-rays having energies characteristic of the elements present. Chemical combination between elements results in a small shift of the peak energies of these characteristic x-rays because chemical bonds between different elements have different energies. The energy differences of the characteristic x-rays resulting from valence electron transitions can be used to identify the chemical species present and to obtain information about the chemical bond itself. Although these peak-energy shifts have been well known for a number of years, their use for chemical-species identification in small volumes of material was not realized until the development of the electron microprobe.

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