Molecular and morphological evidence for a new species status within the genus Euseius (Acari: Phytoseiidae)

2009 ◽  
Vol 87 (8) ◽  
pp. 689-698 ◽  
Author(s):  
M. Okassa ◽  
M.-S. Tixier ◽  
B. Cheval ◽  
S. Kreiter
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
Diagnostic Character ◽  
Morphological Evidence ◽  
Dorsal Shield ◽  
Species Status ◽  
Molecular Analyses ◽  
Molecular Tests ◽  
Euseius Stipulatus ◽  
A New Species

The identity of specimens belonging to the genus Euseius Wainstein, 1962 found on several trees in France is investigated. These specimens are morphologically close to Euseius stipulatus (Athias-Henriot, 1960) except for the shape of the spermatheca and the dorsal shield reticulation. The aim of the present study was to determine if these specimens belong to this latter species and if the shape of the spermatheca could be considered a reliable diagnostic character. Thirty-four characters, including idiosomal seta lengths, were measured and molecular tests (12S rDNA, COI mtDNA) were carried out. Although small, significant differences between populations of Euseius sp. were observed. The morphometric differences between E. stipulatus and Euseius sp. were very small except for the seta z2 and for the length of the ventrianal shield, as well as the length and form of the spermatheca. Molecular analyses support that Euseius sp. and E. stipulatus are two different species. Euseius sp. has been described as a new species to science in another publication under the name Euseius gallicus . Reliability of some morphological characters for species diagnosis is discussed.

Salicornia cuscoensis (Amaranthaceae/Chenopodiaceae), a new species from Peru (South America)

Phytotaxa ◽  
2017 ◽  
Vol 319 (3) ◽  
pp. 254 ◽  
Author(s):  
M. ÁNGELES ALONSO ◽  
MANUEL B. CRESPO ◽  
HELMUT FREITAG
Keyword(s):  
New Species ◽  
South America ◽  
Morphological Characters ◽  
Tierra Del Fuego ◽  
South American ◽  
Habitat Distribution ◽  
Closely Related Species ◽  
Molecular Analyses ◽  
Southern Patagonia ◽  
A New Species

The name Salicornia cuscoensis given to a plant from high Andean saltmarshes near Cusco [Cuzco] and Ayacucho, Peru (South America) is validated by a diagnosis and description. The main morphological characters that separate S. cuscoensis from other closely related species are creeping habit, delicate branches, inflorescence of short and thin spikes, and seed indumentum. The new species clearly differs from other perennial Salicornia taxa growing in high Andean saltmarshes such as S. pulvinata and S. andina. The former forms small compact cushions producing very short, few-flowered inflorescences. The latter shows woody stems and forms larger rounded carpets. Morphologically, S. cuscoensis is also similar to S. magellanica, a species growing along the seashore in southern Patagonia and Tierra del Fuego, but the latter has shorter and wider inflorescences and larger seeds with a different type and arrangement of indumentum. Molecular analyses also supported the separation of S. cuscoensis. Data on habitat, distribution and phylogenetic relationships are presented for the new species and its relatives, and an identification key is given for the South American taxa of the genus Salicornia.

scholarly journals Plantago campestris (Plantaginaceae), a rare new species from southern Brazil, supported by phylogenomic and morphological evidence

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11848
Author(s):  
Gustavo Hassemer ◽  
Elliot M. Gardner ◽  
Nina Rønsted
Keyword(s):  
New Species ◽  
Species Complex ◽  
High Throughput Sequencing ◽  
Morphological Characters ◽  
High Elevation ◽  
Species Level ◽  
Morphological Evidence ◽  
Southern Brazil ◽  
A New Species ◽  
Iucn Criteria

High-throughput sequencing, when combined with taxonomic expertise, is a powerful tool to refine and advance taxonomic classification, including at the species level. In the present work, a new species, Plantago campestris, is described out of the P. commersoniana species complex, based on phylogenomic and morphological evidence. The main morphological characters that distinguish the new species from P. commersoniana are the glabrous posterior sepals and the slightly broader leaves. The new species is known from only three localities, all in natural high-elevation grasslands in Paraná and Santa Catarina states, southern Brazil. According to the IUCN criteria new species should be assessed as Endangered (EN). We present field photographs of P. campestris and related species, and we provide an identification key to the species previously included within the circumscription of P. commersoniana.

scholarly journals A new species of Micryletta frog (Microhylidae) from Northeast India

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7012 ◽  
Author(s):  
Abhijit Das ◽  
Sonali Garg ◽  
Amir Hamidy ◽  
Eric N. Smith ◽  
S. D. Biju
Keyword(s):  
New Species ◽  
Ventral View ◽  
Morphological Characters ◽  
Northeast India ◽  
Morphological Evidence ◽  
New Taxon ◽  
Lower Lip ◽  
Mitochondrial Data ◽  
Moderate Elevation ◽  
A New Species

We describe a new species of frog in the microhylid genus Micryletta Dubois, 1987 from Northeast India based on molecular and morphological evidence. The new species, formally described as Micryletta aishani sp. nov., is phenotypically distinct from other congeners by a suite of morphological characters such as brown to reddish-brown dorsum; dorsal skin shagreened with minute spinules; snout shape nearly truncate in dorsal and ventral view; a prominent dark streak extending from tip of the snout up to the lower abdomen; ash-grey mottling along the margins of upper and lower lip extending up to the flanks, limb margins and dorsal surfaces of hand and foot; tibiotarsal articulation reaching up to the level of armpits; absence of outer metatarsal tubercles; and absence of webbing between toes. Phylogenetic relationships within the genus are inferred based on mitochondrial data and the new taxon is found to differ from all the recognised Micryletta species by 3.5–5.9% divergence in the mitochondrial 16S rRNA. The new species was found in the states of Assam, Manipur, and Tripura, from low to moderate elevation (30–800 m asl) regions lying south of River Brahmaputra and encompassing the Indo-Burma Biodiversity Hotspot. The discovery validates the presence of genus Micryletta in Northeast India based on genetic evidence, consequently confirming the extension of its geographical range, westwards from Southeast Asia up to Northeast India. Further, for nomenclatural stability of two previously known species, Microhyla inornata (= Micryletta inornata) and Microhyla steinegeri (= Micryletta steinegeri), lectotypes are designated along with detailed descriptions.

A new karst dwelling species of the Gekko japonicus group (Squamata: Gekkonidae) from central Laos

Zootaxa ◽  
2017 ◽  
Vol 4263 (1) ◽  
pp. 179 ◽  
Author(s):  
VINH QUANG LUU ◽  
TRUONG QUANG NGUYEN ◽  
MINH DUC LE ◽  
MICHAEL BONKOWSKI ◽  
THOMAS ZIEGLER
Keyword(s):  
New Species ◽  
Genetic Divergence ◽  
Dorsal Surface ◽  
Morphological Characters ◽  
Molecular Data ◽  
Molecular Analyses ◽  
Hind Limbs ◽  
Gekko Japonicus ◽  
A New Species ◽  
Nd2 Gene

A new species of the Gekko japonicus group is described from Khammouane Province, central Laos, based on morphological characters and molecular data. Morphologically, Gekko nadenensis sp. nov. is differentiated from the remaining congeners by a combination of the following characters: size moderate (SVL 61.0–77.1 mm); nares bordered with rostral; internasals absent; postmentals enlarged; interorbital scales between anterior corners of the eyes 28–30; dorsal tubercles absent; ventral scales between mental and cloacal slit 175–185; midbody scale rows 123–140; ventral scale rows 38–40; subdigital lamellae on first toes 13–15, on fourth toes 14–16; finger and toe webbing present at base; tubercles on dorsal surface of fore and hind limbs absent; precloacal pores six (3+3 or 5+1) in a discontinuous row in males, absent in the female; postcloacal tubercles 1 or 2; tubercles absent on dorsal surface of tail base; subcaudals distinctly enlarged; dorsal surface of body with greyish brown blotches. Molecular analyses demonstrated the new species is closely related to G. bonkowskii and G. thakhekensis, but separated from them by approximately 7% in genetic divergence as shown by a fragment of the mitochondrial ND2 gene.

scholarly journals A new opilioacarid species (Parasitiformes: Opilioacarida) from Crete (Greece) with notes on its karyotype

Acarologia ◽  
2021 ◽  
Vol 61 (3) ◽  
pp. 548-563
Author(s):  
Maria Magdalena Vázquez ◽  
Ivalú Macarena Ávila Herrera ◽  
Pavel Just ◽  
Azucena Claudia Reyes Lerma ◽  
Maria Chatzaki ◽  
...  
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
Simple Type ◽  
Dorsal Shield ◽  
Genital Area ◽  
Anterior Dorsal ◽  
Level Elevation ◽  
Acrocentric Chromosomes ◽  
A New Species ◽  
Basal Structure

A new species of opilioacarid mite, Opilioacarus thaleri n. sp., is described from mid-level elevation close to the seashore in Crete (Greece). It was found on moister sites, under stones or inside stone accumulations in phrygana vegetation. The peak of activity was found to be in early May. The diagnostic morphological characters include 7–8 eugenital setae (female), 5/7 setae on each sclerite at pregenital and genital areas, 11 setae on genital area (male), anterior dorsal shield with two pairs of eyes and 60–70 stout, ribbed setae, 5 (female) or 6 (male) leaf setae plus one pectinate seta on the palp tarsus, and the "simple" type of ovipositor with two pairs of glands, a pair of ducts plus a basal structure. The female karyotype comprises 16 monocentric chromosomes, predominantly with acrocentric morphology. Comparison with data of the ixodids and mesostigmatids indicates that a low number of chromosomes and predomination of acrocentric chromosomes could be plesiomorphies of the parasitiform mites.

scholarly journals A new species of the genus Centruroides Marx (Scorpiones, Buthidae) from western Michoacán State, México using molecular and morphological evidence

ZooKeys ◽  
2019 ◽  
Vol 859 ◽  
pp. 31-48
Author(s):  
Ana F. Quijano-Ravell ◽  
Luis F. de Armas ◽  
Oscar F. Francke ◽  
Javier Ponce-Saavedra
Keyword(s):  
New Species ◽  
Mitochondrial Gene ◽  
Morphological Characters ◽  
Integrative Taxonomy ◽  
Valid Species ◽  
Morphological Evidence ◽  
Molecular Evidence ◽  
Mountain Range ◽  
A New Species ◽  
Gene Mrna

A new species of scorpion belonging to the genus Centruroides Marx, 1890 is described from the Coalcomán mountain range, western Michoacán State, Mexico. Its general aspect resembles Centruroidesruana Quijano-Ravell & Ponce-Saavedra, 2016, and C.infamatus (C. L. Koch, 1844), but it is a smaller species having lower pectinal tooth counts; also, males of C.ruana have the pedipalp chelae slightly thicker, whereas C.infamatus has a subaculear tubercle nearer to the base of the aculeus. Another species with similar aspect is Centruroidesornatus Pocock, 1902; however, a preliminary molecular analysis of the mitochondrial gene mRNA 16S showed genetic divergence (measured as p-distance) near to 10% between these species, and lower differences between the new species with respect to C.infamatus (4.63%) and C.ruana (5.07%). The molecular evidence together with the morphological characters (integrative taxonomy) are sufficient for recognizing the Coalcomán population as a separate and valid species.

A revision of the dark-bellied, stream-dwelling snakes of the genus Hebius (Reptilia: Squamata: Natricidae) with the description of a new species from China, Vietnam and Thailand

Zootaxa ◽  
2021 ◽  
Vol 4911 (1) ◽  
pp. 1-61
Author(s):  
PATRICK DAVID ◽  
GERNOT VOGEL ◽  
TRUONG QUANG NGUYEN ◽  
NIKOLAI L. ORLOV ◽  
OLIVIER S. G. PAUWELS ◽  
...  
Keyword(s):  
New Species ◽  
Southern China ◽  
Morphological Characters ◽  
Species Status ◽  
Distribution Maps ◽  
Northern Vietnam ◽  
Full Species ◽  
North Eastern ◽  
Morphological Differences ◽  
A New Species

Species of the genus Hebius Thompson, 1913 with 17 or 19 dorsal scale rows at midbody and an overall dark venter are reviewed, including the two species previously known as Parahelicops annamensis Bourret, 1934 and Pararhabdophis chapaensis Bourret, 1934. Specimens with 17 scale rows are morphologically similar to Hebius venningi (Wall, 1910), which is here redefined based on external morphological characters such as scalation, and dorsal and ventral patterns. Consequently, Natrix nigriventer Wall, 1925 is resurrected from its synonymy with Hebius venningi, whereas Natrix taronensis Smith, 1940, previously considered a subspecies of H. venningi or a full species by some authors but without justification, is here confirmed to full species status. Another group of species, mostly similar in coloration and pattern to the H. venningi group but with 19 dorsal scale rows, includes H. modestus (Günther, 1875), H. deschauenseei (Taylor, 1934) and a new species which is described herein based on specimens from northern Vietnam, southern China and north-eastern Thailand due to distinct morphological differences. We also provide updated taxonomic accounts for the species of this group, including an identification key and distribution maps. 

Streblocladia (Rhodomelaceae) in New Zealand: recognition of a new species

Phytotaxa ◽  
2018 ◽  
Vol 374 (1) ◽  
pp. 41
Author(s):  
MYUNG SOOK KIM ◽  
BYEONGSEOK KIM ◽  
MI YEON YANG ◽  
ROBERTA D’ARCHINO ◽  
JUDY E. SUTHERLAND ◽  
...  
Keyword(s):  
New Species ◽  
New Zealand ◽  
Strong Support ◽  
Red Alga ◽  
Morphological Evidence ◽  
Rbcl Gene ◽  
Monophyletic Clade ◽  
Molecular Analyses ◽  
A New Species ◽  
Rbcl Gene Sequences

The genus Streblocladia was described by early European collectors based on S. neglecta, a marine red alga from southern New Zealand currently treated as a taxonomic synonym of Streblocladia glomerulata. In New Zealand, Streblocladia includes two species and has always been considered distinct. To analyse the phylogenetic relationships of this genus with other Polysiphonia sensu lato, we conducted a molecular-assisted investigation using plastid rbcL gene sequences of recent collections of Streblocladia from New Zealand, as well as morphological observations. The molecular analyses indicated that Streblocladia species form a monophyletic clade sister to P. rhododactyla with strong support. The Streblocladia clade is clearly separated from other species of Polysiphonia sensu lato. Species of Streblocladia are characterized by sympodially branched, corticated main axes, the absence of vegetative trichoblasts, and spermatangial branches that are unilaterally arranged and replace the whole trichoblast. As a result, the New Zealand endemic Polysiphonia rhododactyla is transferred to the genus Streblocladia on the basis of genetic and morphological evidence and compared with the two other species from New Zealand, S. glomerulata and S. muelleriana.

Qualitative and quantitative morphological evidence for recognition of a new species within Ceratozamia (Zamiaceae) from Mexico

Phytotaxa ◽  
2017 ◽  
Vol 317 (1) ◽  
pp. 17 ◽  
Author(s):  
LILÍ MARTÍNEZ-DOMÍNGUEZ ◽  
FERNANDO NICOLALDE-MOREJÓN ◽  
DENNIS WM. STEVENSON
Keyword(s):  
New Species ◽  
Population Level ◽  
Morphological Characters ◽  
Morphological Evidence ◽  
Herbarium Specimens ◽  
Qualitative And Quantitative ◽  
Leaf Emergence ◽  
Taxonomic History ◽  
History Of ◽  
A New Species

Several Ceratozamia populations from the “Carso Huasteco” region in Mexico have a controversial circumscription and have been historically identified as Ceratozamia fuscoviridis. In this paper, we present a review of the taxonomic history of this species and provide taxa circumscriptions based on analyses of herbarium specimens from this region and supplemented with fieldwork. For this, we have studied qualitative and quantitative morphological variation at population level. We recognize two species in this group: C. fuscoviridis and a new species, C. chamberlainii. Here, we provide two lines of qualitative and quantitative morphological evidence showing that plants of C. chamberlainii from southern San Luis Potosí to northern Hidalgo are distinct from C. fuscoviridis of central Hidalgo east of Veracruz. These species can be identified by leaflet form, leaf emergence color, color of the ovulate strobilus, and form of the megasporophyll, along with a combination of quantitative morphological characters.

scholarly journals Confusion surrounding Didymosphaeria—phylogenetic and morphological evidence suggest Didymosphaeriaceae is not a distinct family

Phytotaxa ◽  
2014 ◽  
Vol 176 (1) ◽  
pp. 102 ◽  
Author(s):  
HIRAN A. ARIYAWANSA ◽  
ERIO CAMPORESI ◽  
KASUN M. THAMBUGALA ◽  
AUSANA MAPOOK ◽  
JI-CHUAN KANG ◽  
...  
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Morphological Evidence ◽  
Nucleotide Sequence Data ◽  
The Family ◽  
Family Based ◽  
Phylogenetic Lineages ◽  
A New Species

Didymosphaeriaceae is a ubiquitous fungal family that is reported to include saprobic, endophytic and pathogenic species associated with a wide variety of substrates. The family is characterized by 1-septate ascospores and trabeculate pseudoparaphyses, mainly anastomosing above the asci. In recent treatments Appendispora, Didymosphaeria, Roussoella, Phaeodothis and Verruculina were placed in the family. The aim of the present study is to delineate phylogenetic lineages within Didymosphaeriaceae and allied genera. A new species, Didymosphaeria rubi-ulmifolii, was isolated and identified based on morphological characters and phylogenetic analyses of partial 18S nrDNA and 28S nrDNA nucleotide sequence data. Didymosphaeria rubi-ulmifolii clustered with Montagnulaceae as a separate genus, while two putative strains (HKUCC 5834 and CMW 22186) of D. futilis from GenBank clustered with Cucurbitariaceae and Didymellaceae, respectively. The new species is characterized by immersed to slightly erumpent ascomata immersed under a clypeus, a peridium with compressed cells of textura intricata, long trabeculate pseudoparaphyses, anastomosing mostly above the asci and brown, 1-septate ascospores with granulate ornamentation. Phylogenetic analysis in combination with morphology and a review of literature show that Appendispora, Phaeodothis, Roussoella and Verruculina should be excluded from the family. Phaeodothis belongs in Montagnulaceae, Verruculina in Testudinaceae, while Appendispora and Roussoella belong in Roussoellaceae. The position of Didymosphaeriaceae as a distinct family, based on 1-septate ascospores and trabeculate pseudoparaphyses, mainly anastomosing above the asci is doubtful. Fresh collections of more Didymosphaeria strains are needed for epitypification and to obtain sequence data to establish if this family can be maintained.

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