Pinellia hunanensis (Araceae), a new species supported by morphometric analysis and DNA barcoding

Phytotaxa ◽  
2013 ◽  
Vol 130 (1) ◽  
pp. 1 ◽  
Author(s):  
Steven G Newmaster ◽  
YU-JING LIU ◽  
XIAN-JIN WU ◽  
YUE LIU ◽  
Subramanyam Ragupathy ◽  
...  
Keyword(s):  
New Species ◽  
Dna Barcoding ◽  
Function Analysis ◽  
Detrended Correspondence Analysis ◽  
Morphological Characters ◽  
Preliminary Evidence ◽  
Morphometric Variation ◽  
Further Development ◽  
A New Species

Pinellia hunanensis, a new species from China, is described and illustrated. A key for the identification of all Pinellia species in China, Korea and Japan is included. A detrended correspondence analysis identified 6 groups of taxa including the new species. From the 20 samples, analyzing 38 morphological characters. A discriminant function analysis was used to rigorously test the classification of specimens provided in the cluster analysis. DNA barcoding provided phylogenetic support using NJ and Bayesian methods to distinguish all six taxa including the putative new species. This study provides preliminary evidence of morphometric variation within and among species of Pinellia, which allows further development of hypothesis concerning species boundaries. Discussions concerning medicinal product substitution within the genus Pinellia are presented in the context of conservation initiatives of species in China.

A synopsis ofChaenothecain North America, including a new species from southern Ontario,C. selvae, supported by morphometric analyses

Botany ◽  
2018 ◽  
Vol 96 (9) ◽  
pp. 547-553 ◽  
Author(s):  
Richard Troy McMullin ◽  
Jose R. Maloles ◽  
Steven B. Selva ◽  
Steven G. Newmaster
Keyword(s):  
New Species ◽  
North America ◽  
Correspondence Analysis ◽  
Detrended Correspondence Analysis ◽  
Morphological Characters ◽  
Morphometric Variation ◽  
Southern Ontario ◽  
Morphometric Analyses ◽  
A New Species

We describe and illustrate a new species of calicioid lichen from southern Ontario, Chaenotheca selvae. We place it in Chaenotheca because of its lichenized thallus with a Stichococcus photobiont, a brown mazaedium, and ascospores that are brown, spherical, and single-celled (3.0–3.6 μm in diam.). It differs from other species of Chaenotheca by its photobiont, non-ornamented ascospores, straight stalks, and producing orange-brown pruina on the mazaedium, excipulum, and upper portion of the stalk when mature. Using a detrended correspondence analysis we identified 25 taxa, including the sp. nov., analyzing 22 morphological characters. Our results provide evidence of chemical and morphometric variation among species of Chaenotheca. We also provide a key for the identification of the 25 Chaenotheca species in North America.

Studies on the Family Opisthorchiidaæ Braun, 1901, with a description of a New Species of Opisthorchis from a Sarus Crane (Antigone antigone)

1927 ◽  
Vol 5 (2) ◽  
pp. 89-104 ◽  
Author(s):  
D. O. Morgan
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
Systematic Position ◽  
Minor Importance ◽  
New Genera ◽  
The Past ◽  
The Family ◽  
A New Species

The classification of the Trematode family Opisthorchiidæ presents some difficulties to the systematist. These difficulties arise partly from the fact that a number of the existing species appear to lack any real morphological characters by which they can be differentiated, slight variations in measurements, together with a difference in host, having been considered sufficient to justify the making of new species. This view has resulted in the placing of undue importance on somewhat minor differences when they do occur in other species, such differences being considered sufficient for creating new genera.The systematist is further confronted with the difficulty of forming definite opinions on the systematic position of some of the species made by earlier workers. Their descriptions and figures are often inadequate owing to the fact that characters which, in the past, were considered of minor importance are now given much closer attention. Examples of the confusion which has arisen from such a position will be referred to in this paper.

Effectiveness of DNA barcoding markers in the description of a new and unusual calyptrate species of Myrcianthes (Myrtaceae)

Phytotaxa ◽  
2016 ◽  
Vol 284 (3) ◽  
pp. 203
Author(s):  
CARLOS PARRA-O. ◽  
A. F. BOHÓRQUEZ-OSORIO
Keyword(s):  
New Species ◽  
Dna Barcoding ◽  
Morphological Characters ◽  
Unusual Combination ◽  
A New Species

A new species, Myrcianthes roncesvallensis is described and illustrated from Andean forests of Tolima, Colombia. Due to the unusual combination of morphological characters in this new species never been found previously in a Colombian Myrtaceae, such as having a closed calyx, dichasial inflorescence and an eugenioid embryo, three DNA barcoding markers (rbcL, matK and ITS) were used to confirm the genus in which this species should be described. Taxonomic affinities of the new species within the genus are discussed.

scholarly journals Description of a new species of Loxosceles Heineken & Lowe (Araneae, Sicariidae) recluse spiders from Hidalgo, Mexico, under integrative taxonomy: morphological and DNA barcoding data (CO1 + ITS2)

2020 ◽  
Author(s):  
Claudia Isabel Navarro-Rodríguez ◽  
Alejandro Valdez-Mondragón
Keyword(s):  
New Species ◽  
Dna Barcoding ◽  
Species Delimitation ◽  
Sister Group ◽  
Morphological Characters ◽  
Integrative Taxonomy ◽  
Taxonomic Approach ◽  
Morphological Differences ◽  
Unique Species ◽  
A New Species

Based on an integrative taxonomic approach, a new species of the genus Loxosceles Heineken & Lowe, 1832, is described from the state of Hidalgo, Mexico. Loxosceles tolantongo sp. nov. is described based on DNA barcoding using cytochrome c oxidase subunit 1 (CO1) and internal transcribed spacer 2 (ITS2), and morphology. For species delimitation, four molecular methods were implemented: 1) corrected p-distances under neighbor joining (NJ); 2) automatic barcode gap discovery (ABGD); 3) general mixed yule coalescent model (GMYC) and 4) Bayesian Poisson tree processes (bPTP). The new species morphologically resembles L. jaca, another species from Hidalgo, but there are morphological differences mainly in the tibiae of the male palp, the seminal receptacles of the females and also the high genetic p-distances. CO1 was more informative than ITS2 for the genetic separation; however, both concatenated genes (CO1 + ITS2) present robust evidence for species delimitation. Loxosceles tolantongo sp. nov. is considered a unique species for four reasons: 1) it can be diagnosed and distinguished by morphological characters (of the male palps mainly, but also of the seminal receptacles of the females); 2) the genetic p-distances with CO1 were high (>10%); 3) the molecular species delimitation methods were congruent under CO1 and CO1 + ITS2; and 4) under CO1 and CO1 + ITS2, the new species is a putative sister group of L. jaca + L. tenango.

Description of a new species of the genus Maua Distant (Hemiptera, Cicadidae) from China

Zootaxa ◽  
2021 ◽  
Vol 4949 (3) ◽  
pp. 582-588
Author(s):  
JIALI WANG ◽  
JOANNES P. DUFFELS ◽  
CONG WEI
Keyword(s):  
New Species ◽  
Dna Barcoding ◽  
Intraspecific Variation ◽  
Male Genitalia ◽  
Morphological Characters ◽  
Coi Gene ◽  
Morphological Observation ◽  
Mitochondrial Coi ◽  
Mitochondrial Coi Gene ◽  
A New Species

A new species, Maua squeala sp. nov., is described from China. This species is similar to M. affinis Distant, 1905 and M. palawanensis Duffels, 2009, but can be distinguished by the shorter and more slender body of the new species, the lateral fasciae on the mesonotum and the shape of the male genitalia. The intraspecific variation of this species is discussed based on morphological observation combined with sequences of partial mitochondrial COI gene (DNA barcoding) of individuals exhibiting different morphological characters. 

scholarly journals The first record of the genus Dipteranthus (Orchidaceae) in the Guyana, description of a new species

2018 ◽  
Vol 51 (1) ◽  
pp. 1-3
Author(s):  
Dariusz L. Szlachetko ◽  
Monika M. Lipińska ◽  
Iwona Skorowska
Keyword(s):  
New Species ◽  
First Record ◽  
Morphological Characters ◽  
Modern Classification ◽  
The Guianas ◽  
A New Species

Abstract The orchid genus Dipteranthus, described by Rodrigues in 1882, comprises about 10 species distributed from Venezuela to Bolivia and Brazil. Plants of Dipteranthus are small epiphytes, reaching in total up to 10 cm in length, hence, are easily overlooked in the field. Modern classification of Dipteranthus is still under discussion. During the revision of orchids of the Guianas, we came across some specimens that do not match morphological characters of any previously known Dipteranthus species. Thus, we propose that these specimens represent a new species – Dipteranthus clarkei sp. nov. D. clarkei is the first representative of the genus known from Guyana.

Integrative taxonomy of Mexican cycads: biogeography, morphology and DNA barcoding corroborate a new sympatric species in Ceratozamia (Zamiaceae)

Phytotaxa ◽  
2016 ◽  
Vol 268 (1) ◽  
pp. 25 ◽  
Author(s):  
LILÍ MARTÍNEZ-DOMÍNGUEZ ◽  
FERNANDO NICOLALDE-MOREJÓN ◽  
FRANCISCO VERGARA-SILVA ◽  
DENNIS W. STEVENSON
Keyword(s):  
New Species ◽  
Dna Barcoding ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Sympatric Species ◽  
Integrative Taxonomy ◽  
Los Tuxtlas ◽  
A New Species

A new species, from the montane region of Los Tuxtlas (state of Veracruz, Mexico), Ceratozamia subroseophylla, is proposed in accordance with the integrative taxonomy framework and through application of the taxonomic circle rationale. Our identification of this new species is the result of a thorough re-evaluation of four formerly described Ceratozamia species, namely: (1) C. miqueliana, with which it overlaps geographically; (2) C. mexicana; (3) C. robusta, which has also been previously seen as morphologically similar to C. miqueliana; and (4) C. brevifrons, which was at the center of a controversy concerning the morphological and geographic limits when compared to C. mexicana. Even though there are morphometric affinities of C. subroseophylla with this set of species, there are apomorphies in qualitative morphological characters and diagnostic nucleotidic variants established through character-based DNA barcoding to allow the recognition of this new species. The implications that our integrative taxonomy-based assessment of systematic diversity in Ceratozamia species from Veracruz have for evaluating the overall taxonomic status of the genus are discussed.

A New Species of Justicia (Acanthaceae: Acanthoideae: Justicieae) from Northeastern Brazil

2020 ◽  
Vol 45 (2) ◽  
pp. 328-333
Author(s):  
Camila Alcantara ◽  
Gleison Soares ◽  
Francisco de Assis Ribeiro dos Santos ◽  
Marccus Alves
Keyword(s):  
New Species ◽  
Rio Grande ◽  
Morphological Characters ◽  
Northeastern Brazil ◽  
Distribution Map ◽  
Key To Species ◽  
A New Species

Abstract—Justicia rubrobracteata, a new species from northeastern Brazil, is described and illustrated. The new species is morphologically similar to J. aequilabris due to its shrubby habit, and terminal and axillary spicate inflorescences with red flowers. However, J. rubrobracteata is differentiated mainly by the shape and color of its bracts and bracteoles as well as an orangish macula in the corolla, and a torulose capsule. In addition, J. rubrobracteata is only known from northeastern Brazil, from the states of Paraíba and Rio Grande do Norte, while J. aequilabris is widely distributed in Bolivia, Brazil, and Paraguay. A table with the main morphological characters of both species is included, as well as photographs, a key to species of Justicia for the states of Paraíba and Rio Grande do Norte in northeastern Brazil, a distribution map of both species, and conservation data for the new species.

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