scholarly journals Description of a new halophilic tiger beetle in the genus Eunota (Coleoptera, Cicindelidae, Cicindelini) identified using morphology, phylogenetics and biogeography

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0257108
Author(s):  
Daniel P. Duran ◽  
Stephen J. Roman
Keyword(s):  
New Species ◽  
Integrative Taxonomy ◽  
Data Types ◽  
Tiger Beetle ◽  
Northern Mexico ◽  
Multiple Data ◽  
Morphological Differences ◽  
Species Descriptions ◽  
Private Collections ◽  
A New Species

Tiger beetles are a popular group of insects amongst amateur naturalists, and are well-represented in museum and private collections. New species descriptions plateaued in the 19th century, but there is a recent resurgence of discoveries as integrative taxonomy methods, guided by molecular systematics, uncover “cryptic” tiger beetle diversity. In this paper, we describe a new species using multiple data types. This new species, Eunota mecocheila Duran and Roman n. sp., is in the tribe Cicindelini, and is described from specimens collected in saline muddy ditches in northern Mexico. This species is closely related to E. circumpicta (LaFerté-Sénectère, 1841), but is separated based on morphological differences, geographic range, and genetic differentiation. Little is known about the biology or distribution of this species and it has only been collected from two sites in the state of Coahuila. Given the location of this new species, and its genetic divergence from its closest relative, E. circumpicta, we discuss the historical biogeography that may have led to isolation and speciation. The male and female dorsal, lateral and frontal habitus and the male aedeagus are shown.

A New Species of the Freshwater Cladoceran Genus Scapholeberis Schoedler, 1858 (Cladocera: Anomopoda) from the Semidesert Northern Mexico, Highlighted by DNA Barcoding

Zootaxa ◽  
2009 ◽  
Vol 2236 (1) ◽  
pp. 50-64 ◽  
Author(s):  
PATRICIA QUIROZ-VÁZQUEZ ◽  
MANUEL ELÍAS-GUTIÉRREZ
Keyword(s):  
New Species ◽  
Morphological Analysis ◽  
Mitochondrial Gene ◽  
Distinctive Character ◽  
Desert Region ◽  
Northern Mexico ◽  
Hyaline Membrane ◽  
Morphological Differences ◽  
A New Species ◽  
Trunk Limb

Sequencing of the CO1 mitochondrial gene (barcoding) highlighted a possible different species in the semi-desert region of Mexico. After a detailed morphological analysis we describe Scapholeberis duranguensis n. sp. (Cladocera: Anomopoda: Daphniidae). Specimens from the type locality, El Chupadero, Durango, were compared with specimens of S. armata armata Herrick, 1882 and S. armata freyi Dumont and Pensaert, 1983 from Canada and southeastern, central and northern Mexico. The main characters that differentiate the new species are: (1) a thicker denticulate membrane with a conspicuous underlying hyaline membrane at the posterior rim of the valves, (2) fewer setae in the gnathobase of trunk limb II and (3) longer and more rectilinear ejector hooks in trunk limb I. The presence of a pore-like structure at the top of the head was also observed, however we are not certain whether this can be considered as a distinctive character, as it was not consistent in all SEM scanned organisms. The denticulate membrane, the number of setae in the gnathobase of trunk limb II and the length of the ejector hooks are characters shared with other species, however, the combination of them and in particular the structure and thickness of the double membrane at the posterior rim of the valves lead us to conclude that S. duranguensis is a species different from S. armata and from other members of this genus. The CO1 sequences of S. armata freyi and S. duranguensis n. sp. showed a mean divergence of 12.02%, thus supporting the morphological differences between them. Finally, a comparison of the CO1 sequences of Scapholeberis duranguensis n.sp. with other Scapholeberinae available in GenBank supported our results.

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.

scholarly journals Resolving the taxonomy of the Merodon dobrogensis species subgroup (Diptera: Syrphidae), with the description of a new species

2019 ◽  
Vol 152 (1) ◽  
pp. 36-59
Author(s):  
Ljiljana Šašić Zorić ◽  
Jelena Ačanski ◽  
Ante Vujić ◽  
Gunilla Ståhls ◽  
Mihajla Djan ◽  
...  
Keyword(s):  
New Species ◽  
Species Complex ◽  
Distinct Species ◽  
Molecular Data ◽  
Integrative Taxonomy ◽  
Species Group ◽  
Data Sources ◽  
Multiple Data ◽  
A New Species ◽  
Greek Island

AbstractThe taxonomy of Merodon dobrogensis Bradescu, 1982 (Diptera: Syrphidae) species subgroup was reviewed. Multiple data sources (morphology, geometric morphometry of wings and surstylus, molecular data, and distributional data) were used to investigate the species subgroup in the manner of integrative taxonomy. Merodon dobrogensis Bradescu, 1982 and M. puniceus Vujić, Radenković, and Pérez-Bañón, 2011 are supported as distinct species belonging to the M. dobrogensis species complex within the M. dobrogensis species subgroup. Additionally, evidence is presented for the description of a new species, M. rojoi Radenković and Vujić new species, with a distribution in mainland Greece, the Greek island Euboea, and the Peloponnese. A short diagnosis is provided for the M. aureus species group, the M. dobrogensis species subgroup, and the newly defined M. dobrogensis species complex, in addition to a description of the new species, with drawings and photographs of adult morphology.

A new species of Contomastix (Squamata, Teiidae) supported by total evidence, with remarks on diagnostic characters defining the genus

2019 ◽  
pp. 23-36
Author(s):  
Mario. R. Cabrera
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Phylogenetic Reconstruction ◽  
Total Evidence ◽  
Molecular Evidence ◽  
Proximal Margin ◽  
Diagnostic Characters ◽  
Morphological Differences ◽  
A New Species ◽  
Molecular Characters

Formerly Cnemidophorus was thought to be the most speciose genus of Teiidae. This genus comprised four morphological groups that were later defined as four different genera, Ameivula, Aurivela, Cnemidophorus and Contomastix. The last appears as paraphyletic in a recent phylogenetic reconstruction based on morphology, but monophyletic in a reconstruction using molecular characters. Six species are allocated to Contomastix. One of them, C. lacertoides, having an extensive and disjunct geographic distribution in Argentina, Uruguay and Brazil. Preliminary analyses revealed morphological differences among its populations, suggesting that it is actually a complex of species. Here, we describe a new species corresponding to the Argentinian populations hitherto regarded as C. lacertoides, by integrating morphological and molecular evidence. Furthermore, we demonstrate that the presence of notched proximal margin of the tongue is a character that defines the genus Contomastix.

Integrative taxonomy of giant crested Eusirus in the Southern Ocean, including the description of a new species (Crustacea: Amphipoda: Eusiridae)

2020 ◽  
Author(s):  
Marie L Verheye ◽  
Cédric D’Udekem D’Acoz
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Morphological Analysis ◽  
Integrative Taxonomy ◽  
Putative Species ◽  
Species Complexes ◽  
Statistical Parsimony ◽  
Bayesian Implementation ◽  
A New Species ◽  
Giant Species

Abstract Among Antarctic amphipods of the genus Eusirus, a highly distinctive clade of giant species is characterized by a dorsal, blade-shaped tooth on pereionites 5–7 and pleonites 1–3. This lineage, herein named ‘crested Eusirus’, includes two potential species complexes, the Eusirus perdentatus and Eusirus giganteus complexes, in addition to the more distinctive Eusirus propeperdentatus. Molecular phylogenies and statistical parsimony networks (COI, CytB and ITS2) of crested Eusirus are herein reconstructed. This study aims to formally revise species diversity within crested Eusirus by applying several species delimitation methods (Bayesian implementation of the Poisson tree processes model, general mixed Yule coalescent, multi-rate Poisson tree processes and automatic barcode gap discovery) on the resulting phylogenies. In addition, results from the DNA-based methods are benchmarked against a detailed morphological analysis of all available specimens of the E. perdentatus complex. Our results indicate that species diversity of crested Eusirus is underestimated. Overall, DNA-based methods suggest that the E. perdentatus complex is composed of three putative species and that the E. giganteus complex includes four or five putative species. The morphological analysis of available specimens from the E. perdentatus complex corroborates molecular results by identifying two differentiable species, the genuine E. perdentatus and a new species, herein described as Eusirus pontomedon sp. nov.

scholarly journals A new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopidae, Cyclopinae) from the Chihuahuan desert, northern Mexico

ZooKeys ◽  
2013 ◽  
Vol 287 ◽  
pp. 1-18 ◽  
Author(s):  
Nancy Mercado-Salas ◽  
Eduardo Suarez-Morales ◽  
Alejandro Maeda-Martínez ◽  
Marcelo Silva-Briano
Keyword(s):  
New Species ◽  
Chihuahuan Desert ◽  
Northern Mexico ◽  
A New Species

Andreaea barbarae (Andreaeaceae, Bryophytina), a new moss species from Lesotho

Phytotaxa ◽  
2018 ◽  
Vol 336 (2) ◽  
pp. 148 ◽  
Author(s):  
CARLOS CERREJÓN ◽  
ENRIQUE MAGUILLA ◽  
DIETMAR QUANDT ◽  
JESÚS MUÑOZ ◽  
MODESTO LUCEÑO
Keyword(s):  
New Species ◽  
Northern Hemisphere ◽  
Sub Saharan Africa ◽  
Moss Species ◽  
Spore Size ◽  
Taxonomic Key ◽  
Sub Saharan ◽  
Morphological Differences ◽  
A New Species

Specimens of Andreaea sect. Andreaea collected in Lesotho show morphological differences from the remaining Sub-Saharan Africa species in the group. Particularly, Lesotho specimens have much larger spores, a character diagnostic in the genus. Spore size also separates the Lesotho specimens from typical A. rupestris from the Northern Hemisphere. Consequently, we describe a new species from the highlands of Lesotho (Andreaea barbarae). Additionally, we present a taxonomic key to all accepted species of Andreaea sect. Andreaea in sub-Saharan Africa.

A new species of Cyrtodactylus (Squamata: Gekkonidae) from Ninh Thuan Province, southern Vietnam

Zootaxa ◽  
2021 ◽  
Vol 4999 (1) ◽  
pp. 58-76
Author(s):  
Quyen Hanh Do ◽  
TRUNG MY PHUNG ◽  
HANH THI NGO ◽  
MINH DUC LE ◽  
THOMAS ZIEGLER ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Coi Gene ◽  
Unique Combination ◽  
Mitochondrial Coi ◽  
Southern Vietnam ◽  
Mitochondrial Coi Gene ◽  
Morphological Differences ◽  
Dorsal Pattern ◽  
A New Species

A new species of the Cyrtodactylus irregularis group is described from Ninh Thuan Province, southern Vietnam based on molecular divergence and morphological differences. Cyrtodactylus orlovi sp. nov. is distinguished from the remaining Indochinese bent-toed geckos by having the unique combination of the following characters: size medium (SVL 61.0–77.7 mm); dorsal tubercles in 16–20 irregular rows; 36–39 ventral scale rows; precloacal pores absent in females, 5 or 6 in males, in a continuous row; femoral pores absent; 3–8 enlarged femoral scales; postcloacal spurs 1 or 2; lamellae under toe IV 16–19; a continuous neckband; a highly irregular transverse banded dorsal pattern; the absence of transversely enlarged median subcaudal scales. In phylogenetic analyses, the new species was revealed to be the sister taxon to a clade consisting of Cyrtodactylus cattienensis and the most recently described species from Vietnam, C. chungi, with 12.1–12.4% and 11.7 % pairwise genetic divergence from the two species, respectively, based on a fragment of the mitochondrial COI gene.  

Ferulago akpulatii (Apiaceae): A new species from Central Anatolia, Turkey

Phytotaxa ◽  
2021 ◽  
Vol 518 (2) ◽  
pp. 100-108
Author(s):  
BAHAR GÜRDAL ◽  
BÜLENT OLCAY ◽  
HÜSEYİN ONUR TUNCAY ◽  
EMİNE AKALIN
Keyword(s):  
New Species ◽  
Leaf Shape ◽  
Identification Key ◽  
Central Anatolia ◽  
Cauline Leaf ◽  
Anatomical Features ◽  
Diagnostic Characteristics ◽  
Morphological Differences ◽  
A New Species ◽  
Inflorescence Type

Ferulago akpulatii (Apiaceae) is described as a new species endemic to Central Anatolia, Turkey. It is closely related to Ferulago platycarpa and F. pauciradiata, and is easily distinguished by its cauline leaf shape, inflorescence type, and fruit features. The main morphological differences between Ferulago akpulatii and related taxa are discussed, and the diagnostic characteristics, including the anatomical features of fruits, are given in detail. An identification key of Ferulago akpulatii and the morphologically closer species is also provided.

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