scholarly journals Integrative taxonomy reveals a new species of Neotropical headstanding fish in genus Schizodon (Characiformes: Anostomidae)

2021 ◽  
Vol 19 (4) ◽  
Author(s):  
Júlio C. Garavello ◽  
Jorge L. Ramirez ◽  
Alexandre K. de Oliveira ◽  
Heraldo A. Britski ◽  
José L. O. Birindelli ◽  
...  
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Integrative Taxonomy ◽  
Sister Species ◽  
Diagnostic Feature ◽  
Morphometric Analyses ◽  
Specific Variation ◽  
Taxonomic Methods ◽  
A New Species ◽  
Meristic Data

Abstract Schizodon encompasses approximately 15 species of Neotropical headstanding fishes. Integrative taxonomy, combining molecular and morphometric analyses with traditional taxonomic methods, was used to investigate Schizodon vittatus and its potential new sister species. Molecular differences between the two species in the barcode are greater than intra-specific variation recovered in species of Schizodon, and the two species represent distinct lineages for approximately one million years. The two species are morphologically very similar, and the meristic data showed great overlap. Morphometric analyses also showed overlap among the putative species but indicated differences in caudal-peduncle depth, orbital diameter, and length of anal-fin rays. Color pattern seems to provide a clear diagnostic feature for the two species. Schizodon vittatus usually has four dark brown transversal bars on body, and its sister species has three conspicuous bars, with the fourth, if present, inconspicuous and dorsal to the lateral line. Schizodon vittatus is redescribed based on the type and recently collected specimens, its type locality is revisited, and its known distribution restricted to the Araguaia and Tocantins drainages. The new species, sister to S. vittatus, distributed in the Xingu and Tapajós drainages, is described. A key for the identification of the Amazon clade species of Schizodon is provided.

scholarly journals Hidden tribe: A new species of Stream Toad of the genus Ansonia Stoliczka, 1870 (Anura: Bufonidae) from the poorly explored mountainous borderlands of western Thailand

2021 ◽  
Vol 71 ◽  
pp. 763-779
Author(s):  
Chatmongkon Suwannapoom ◽  
L. Lee Grismer ◽  
Parinya Pawangkhanant ◽  
Mali Naiduangchan ◽  
Platon V. Yushchenko ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Color Pattern ◽  
Sister Species ◽  
Mountain Region ◽  
Unique Combination ◽  
Species Status ◽  
Molecular Phylogenetic ◽  
A New Species

Abstract The integrated results of morphological and molecular phylogenetic analyses confirmed the new species status of a recently discovered population of Ansonia from Suan Phueng District, Ratchaburi Province, Thailand. Ansonia karensp. nov. is separated from all other species of Ansonia by a unique combination of mensural, discrete morphological, and color pattern characteristics and is the sister species of A. thinthinae from Tanintharyi Division, Myanmar. This discovery fills a geographic hiatus of 350 km between it and A. kraensis from Ranong Province, Thailand. Ansonia karensp. nov. is the newest member of a long list of range-restricted endemics having been recently discovered in the northern Tenasserim Mountain region of western Thailand and continues to underscore the unexplored nature of this region and its need for conservation.

Integrative taxonomy of the Asian skinks Sphenomorphus stellatus (Boulenger, 1900) and S. praesignis (Boulenger, 1900) with the resurrection of S. annamiticus (Boettger, 1901) and the description of a new species from Cambodia

Zootaxa ◽  
2019 ◽  
Vol 4683 (3) ◽  
pp. 381-411 ◽  
Author(s):  
L. LEE GRISMER ◽  
PERRY L., JR. WOOD ◽  
EVAN S. H. QUAH ◽  
SHAHRUL ANUAR ◽  
NIKOLAY A. POYARKOV ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Color Pattern ◽  
Integrative Taxonomy ◽  
Peninsular Malaysia ◽  
Wildlife Sanctuary ◽  
Molecular Phylogenetic ◽  
Univariate Analyses ◽  
A New Species

Molecular phylogenetic analyses of the sister species Sphenomorphus stellatus and S. praesignis based on the mitochondrial genes 12S and 16S rRNA recover the former as paraphyletic with respect to the latter in that a specimen of S. stellatus from the type locality in Peninsular Malaysia is more closely related to S. praesignis than to Indochinese populations of S. stellatus. Furthermore, the phylogeny indicates that the Indochinese populations represent two species, thus resulting in four major lineages within this clade. These relationships are consistent with multivariate and univariate analyses of morphological and discrete color pattern data which statistically define and diagnose the four lineages and together with the molecular data, provide the foundation for robust, testable, species-level hypotheses. As such, S. stellatus is herein restricted to Peninsular Malaysia; S. annamiticus is resurrected for the circum-continental populations ranging through southeastern Thailand, southern Cambodia, and southern Vietnam; a new species—S. preylangensis sp. nov.—is described from an isolated mountain, Phnom Chi, from the Prey Lang Wildlife Sanctuary in central Cambodia; and the taxonomy of S. praesignis remains unchanged. The description of S. preylangensis sp. nov. underscores the necessity to conserve this remnant of lowland evergreen rainforest in the Prey Lang Wildlife Sanctuary. 

scholarly journals Review of Brazilian jawfishes of the genus Opistognathus with descriptions of two new species (Teleostei, Opistognathidae)

ZooKeys ◽  
2018 ◽  
Vol 794 ◽  
pp. 95-133 ◽  
Author(s):  
William F. Smith-Vaniz ◽  
Luke Tornabene ◽  
Raphael M. Macieira
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Sister Species ◽  
Disjunct Distribution ◽  
Nominal Species ◽  
Phylogenetic Structure ◽  
Molecular Phylogenetic ◽  
Fernando De Noronha ◽  
Brazilian Province ◽  
Meristic Data

A new species of jawfish,Opistognathusthionyisp. n., is described from the Vitória-Trindade Chain and Fernando de Noronha Archipelago off Brazil, a disjunct distribution of ca. 1,800 km.Opistognathusthionyiand its allopatric Caribbean sister-species,Opistognathusmaxillosus, both have a wide, fan-like upper margin of the subopercular flap and mostly over-lapping meristic data. The new species differs fromO.maxillosusin having the darkest spot on the spinous dorsal fin, when present, between spines 2–5, versus always present between spines 6–9, the buccal area surrounding the esophageal opening pale versus very dark and fewer oblique scale rows in longitudinal series (45–52 vs. 69–85). A second new species,Opistognathusvicinussp. n., known from Brazil’s mainland, has completely over-lapping meristic values with its allopatric Caribbean sister-speciesO.whitehursti, but differs in lacking vomerine teeth and a supramaxilla and retaining the juvenile color pattern of the latter species in adults. Diagnoses, photographs, an identification key, and distributional maps are given for all Brazilian species ofOpistognathus.Molecular phylogenetic analysis of partial cytochrome c oxidase subunit-I sequences indicates that specimens of the two allopatric pairs,O.thionyi–O.maxillosusandO.vicinus–O.whitehursti, form reciprocally monophyletic groups that differ from each other on average by 9 to 11%, with less than 1% average pair-wise genetic distance within-species. Similar patterns of phylogenetic structure were observed between reciprocally monophyletic (predominately allopatric) groups within nominal species ofOpistognathusaurifrons, suggesting the possibility of at least two additional undescribed species from the Brazilian Province.

scholarly journals Integrative taxonomy reveals a new species of pacu (Characiformes: Serrasalmidae: Myloplus) from the Brazilian Amazon

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Rafaela Priscila Ota ◽  
Valéria Nogueira Machado ◽  
Marcelo C. Andrade ◽  
Rupert A. Collins ◽  
Izeni Pires Farias ◽  
...  
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Amazon Basin ◽  
Morphological Diversity ◽  
Common Species ◽  
Color Pattern ◽  
Integrative Taxonomy ◽  
Striking Similarity ◽  
Species Discovery ◽  
A New Species

ABSTRACT Pacus of the genus Myloplus represent a formidable taxonomic challenge, and particularly so for the case of M. asterias and M. rubripinnis, two widespread and common species that harbor considerable morphological diversity. Here we apply DNA barcoding and multiple species discovery methods to find candidate species in this complex group. We report on one well-supported lineage that is also morphologically and ecologically distinct. This lineage represents a new species that can be distinguished from congeners by the presence of dark chromatophores on lateral-line scales, which gives the appearance of a black lateral line. It can be further diagnosed by having 25-29 branched dorsal-fin rays (vs. 18-24), 89-114 perforated scales from the supracleithrum to the end of hypural plate (vs. 56-89), and 98-120 total lateral line scales (vs. 59-97). The new species is widely distributed in the Amazon basin, but seems to have a preference for black- and clearwater habitats. This ecological preference and black lateral line color pattern bears a striking similarity to the recently described silver dollar Metynnis melanogrammus.

A new spiny, prehensile-tailed species of Cyrtodactylus (Squamata: Gekkonidae) from Peninsular Malaysia with a preliminary hypothesis of relationships based on morphology

Zootaxa ◽  
2010 ◽  
Vol 2625 (1) ◽  
pp. 40 ◽  
Author(s):  
L. LEE GRISMER ◽  
SHAHRUL ANUAR ◽  
EVAN QUAH ◽  
MOHD ABDUL MUIN ◽  
CHAN KIN ONN ◽  
...  
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Peninsular Malaysia ◽  
Sister Species ◽  
Exploratory Research ◽  
Malay Peninsula ◽  
A New Species

A new species, Cyrtodactylus durio sp. nov., is described from northwestern Peninsular Malaysia on the basis of its head, body, limbs, and tail being extremely spinose as well as other unique combinations of squamation and color pattern. It is proposed that C. durio sp. nov. forms a clade with C. brevipalmatus, C. elok, C. spinosus, and C. stresemanni on the basis of having a spiny, prehensile tail and that it is the sister species of C. stresemanni based on unique caudal tuberculation. Cytrodactylus durio sp. nov. is the latest in a growing list of new species of amphibians and reptiles recently described from the Malay Peninsula, and Peninsular Malaysia in particular, that clearly underscores the need for continuing exploratory research in these regions.

A new species of Hemiphyllodactylus Bleeker (Squamata; Gekkonidae) from Peninsular Thailand that converges in morphology and color pattern on Pseudogekko smaragdinus (Taylor) from the Philippines

Zootaxa ◽  
2020 ◽  
Vol 4816 (2) ◽  
pp. 171-190 ◽  
Author(s):  
L. LEE GRISMER ◽  
PLATON V. YUSHCHENKO ◽  
PARINYA PAWANGKHANANT ◽  
MALI NAIDUANGCHAN ◽  
ROMAN A. NAZAROV ◽  
...  
Keyword(s):  
New Species ◽  
Color Pattern ◽  
The Philippines ◽  
Peninsular Malaysia ◽  
Sister Species ◽  
Field Surveys ◽  
Body Morphology ◽  
Taxonomic Analysis ◽  
Dorsal Pattern ◽  
A New Species

An integrative taxonomic analysis of newly discovered populations of Hemiphyllodactylus from Indochina recovered a new species from Peninsular Thailand and two others from Laos. The new Thai species, Hemiphyllodactylus pardalis sp. nov. described herein, is the sister species to all other species in the newly designated Indochina clade and has a unique spotted contrasting dorsal pattern not seen in any other species of Hemiphyllodactylus. This, along with its elongate and gracile body morphology, renders it remarkably convergent on the Philippine gecko Pseudogekko smaragdinus despite the fact it is deeply nested within Hemiphyllodactylus. The description of this new species underscores the depauperate nature of Hemiphyllodactylus diversity throughout Indochina in general and Thailand in particular compared to neighboring upland areas of Myanmar and Peninsular Malaysia. This especially underscores the need for continued herpetofaunal field surveys in montane areas of western Thailand. 

scholarly journals Our unknown neighbor: A new species of rain frog of the genus Pristimantis (Amphibia: Anura: Strabomantidae) from the city of Loja, southern Ecuador

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258454
Author(s):  
Paul Székely ◽  
Diana Székely ◽  
Leonardo Ordóñez-Delgado ◽  
Diego Armijos-Ojeda ◽  
Judit Vörös
Keyword(s):  
New Species ◽  
Integrative Taxonomy ◽  
Morphological Features ◽  
Sister Species ◽  
Advertisement Call ◽  
Similar Species ◽  
Amphibian Species ◽  
Southern Ecuador ◽  
The City ◽  
A New Species

We describe a new species of rain frog of the genus Pristimantis from the city of Loja, Southern Ecuador, based on an integrative taxonomy approach, combining molecular, morphological and bioacoustics data. Pristimantis lojanus sp. nov. is a medium sized species of the phylogenetically strongly supported P. phoxocephalus group, and its sister species is P. torresi. The new species can be easily distinguished from its closest congeners and morphologically similar species (that also have acuminate snout with a fleshy keel) by its characteristic advertisement call and morphological features (dorsum finely tuberculate with scattered larger tubercles, flanks without longitudinal lateral folds, no markings in axilla, groin or on concealed limb surfaces, and bronze iris). Additionally, we describe the advertisement call of its sister species, P. torresi. Finally, we detail the current situation of the amphibian species present in the city of Loja and its surroundings.

scholarly journals Nessia gansi: a Second Three-toed Snake-Skink (Reptilia: Squamata: Scincidae) from Sri Lanka with the Designation of a Neotype for Nessia burtonii Gray

2017 ◽  
Vol 60 (1) ◽  
pp. 377-388
Author(s):  
Sudesh Batuwita ◽  
Udeni Edirisinghe
Keyword(s):  
New Species ◽  
Sri Lanka ◽  
Related Species ◽  
Discrete Distribution ◽  
Sister Species ◽  
Closely Related Species ◽  
The Third ◽  
A New Species ◽  
Meristic Data

Abstract A new species of Nessia is described from Sri Lanka. Nessia gansi sp. n. is distinguished from its sister species (N. burtonii) based on the morphological and meristic data. The new species differs from all other congeners except N. burtonii Gray, by a combination of following characters: presence of four limbs; all limbs bearing three digits; interparietal broader than frontal. It distinguishes from N. burtonii by having five (vs. six) supraciliaries; one (vs. two) pretemporal/s; two (vs. one) primary temporal/s; three (vs. four) infralabials; 93-105 (vs. 110-124) paravertebral scale rows; 103-114 (vs. 117-121) ventral scales; two (vs. three) subdigital lamellae under each digit of manus; mental as wide as postmental (vs. mental wider than postmental); and nostrils visible when viewed ventrally (vs. not visible). Two closely related species show a discrete distribution in Sri Lanka: N. gansi sp. n. is recorded from Kanneliya, Rumaswala, Kottawa, Panagula, Ambalangoda and Imaduwa in the first and second peneplains (~100 m), whereas N. burtonii records (here corrected) are reported from Alagalla, Ambagamuwa, Gampola, Hiniduma and Kandy within the third peneplain (from ~500 m). The identity of N. burtonii is stabilized through the designation of a neotype, and here it is re-described.

scholarly journals Integrative Taxonomy Reveals Hidden Cryptic Diversity within Pin Nematodes of the Genus Paratylenchus (Nematoda: Tylenchulidae)

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1454
Author(s):  
Ilenia Clavero-Camacho ◽  
Juan Emilio Palomares-Rius ◽  
Carolina Cantalapiedra-Navarrete ◽  
Guillermo León-Ropero ◽  
Jorge Martín-Barbarroja ◽  
...  
Keyword(s):  
Molecular Markers ◽  
New Species ◽  
Species Complex ◽  
Integrative Taxonomy ◽  
Southern Spain ◽  
Cryptic Diversity ◽  
Natural Ecosystems ◽  
Morphometric Analyses ◽  
Present Distribution ◽  
A New Species

This study delves into the diagnosis of pin nematodes (Paratylenchus spp.) in Spain based on integrative taxonomical approaches using 24 isolates from diverse natural and cultivated environments. Eighteen species were identified using females, males (when available) and juveniles with detailed morphology-morphometry and molecular markers (D2-D3, ITS and COI). Molecular markers were obtained from the same individuals used for morphological and morphometric analyses. The cryptic diversity using an integrative taxonomical approach of the Paratylenchus straeleni-species complex was studied, consisting of an outstanding example of the cryptic diversity within Paratylenchus and including the description of a new species, Paratylenchus parastraeleni sp. nov. Additionally, 17 already known species were identified comprising P. amundseni, P. aciculus, P. baldaccii, P. enigmaticus, P. goodeyi, P. holdemani, P. macrodorus, P. neoamblycephalus, P. pandatus, P. pedrami, P. recisus, P. sheri, P. tateae, P. variabilis, P. veruculatus, P. verus, and P. vitecus. Eight of these species need to be considered as first reports for Spain in this work (viz. P. amundseni, P. aciculus, P. neoamblycephalus, P. pandatus, P. recisus, P. variabilis, P. verus and P. vitecus). Thirty-nine species of Paratylenchus have been reported in Spain from cultivated and natural ecosystems. Although we are aware that nematological efforts on Paratylenchus species in Southern Spain have been higher than that carried out in central and northern part of the country, the present distribution of the genus in Spain, with about 90% of species (35 out of 39 species, and 24 of them confirmed by integrative taxonomy) only reported in Southern Spain, suggest that this part of the country can be considered as a potential hotspot of biodiversity.

Mesobiotus datanlanicus sp. nov., a new tardigrade species (Macrobiotidae: Mesobiotus harmsworthi group) from Lâm Đồng Province in Vietnam

Zootaxa ◽  
2019 ◽  
Vol 4679 (1) ◽  
pp. 164-180 ◽  
Author(s):  
DANIEL STEC
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
18S Rrna ◽  
Integrative Taxonomy ◽  
28S Rrna ◽  
Morphometric Analyses ◽  
The Status ◽  
A New Species ◽  
Scanning Electron

A new species of the Mesobiotus harmsworthi group is described from Datanla Waterfall amusement park in Lâm Đồng Province, Vietnam. An integrative taxonomy approach was applied, by combining morphological and morphometric analyses using light contract microscopy (LCM)) and scanning electron microscopy (SEM) with genetic analysis (18S rRNA, 28S rRNA, ITS-2 and COI markers), to cross-verify the status of the newly discovered population as a new species. By the presence of fully developed areolation around egg processes bases and well developed oral cavity armature (OCA), with all three bands of teeth visible under (LCM), the new species, Mesobiotus datanlanicus sp. nov., is most similar to seven taxa from the harmsworthi complex: M. barbarae (Kaczmarek, Michalczyk & Degma, 2007), M. hieronimi (Pilato & Claxton, 1988), M. insanis Mapalo, Stec, Mirano-Bascos & Michalczyk, 2017, M. neuquensis (Rossi, Claps & Ardohain, 2009), M. nuragicus (Pilato & Sperlinga, 1975), M. pseudoliviae (Pilato & Binda, 1996), M. pseudonuragicus (Pilato, Binda, & Lisi, 2004), but differs from them mainly by some specific characters of the egg and adult morphology as well as by morphometrics. 

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