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.

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.

Phyllosiphon ari sp. nov. (Watanabea clade, Trebouxiophyceae), a new parasitic species isolated from leaves of Arum italicum (Araceae)

Phytotaxa ◽  
2016 ◽  
Vol 283 (2) ◽  
pp. 143 ◽  
Author(s):  
KATEŘINA PROCHÁZKOVÁ ◽  
YVONNE NĚMCOVÁ ◽  
JIŘÍ NEUSTUPA
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Molecular Data ◽  
Rbcl Gene ◽  
Free Living ◽  
Green Algal ◽  
Unique Green ◽  
Arum Italicum ◽  
A New Species ◽  
Rbcl Gene Sequences

The trebouxiophycean genus Phyllosiphon contains unique green algae that thrive as endophytic parasites in the leaves of various members of the Araceae. The DNA sequences of the parasitic populations were originally acquired from infected leaves of subtropical Arisarum vulgare. However, several previous studies showed that the members of the Phyllosiphon clade also occur as free-living algae on various subaerial substrates across Europe. Phyllosiphon infection was also observed on the leaves of the temperate genus Arum, but no molecular data was available for these parasites. We recently found these parasites at a single sub-Mediterranean locality. These algae were genetically different from those previously obtained from Arisarum leaves on the basis of their 18S rDNA and rbcL gene sequences. In the present study, we describe this organism as a new species, Phyllosiphon ari. Phylogenetic differentiation of Phyllosiphon taxa, correlated with host specificity to different genera of the Araceae, suggests concerted host-pathogen co-evolution driving species diversification within this peculiar green algal lineage.

scholarly journals Two New Benthic Diatoms of the Genus Achnanthidium (Bacillariophyceae) from the Hangang River, Korea

Diversity ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 285
Author(s):  
Minzi Miao ◽  
Zhun Li ◽  
Eun-A Hwang ◽  
Ha-Kyung Kim ◽  
Hyuk Lee ◽  
...  
Keyword(s):  
New Species ◽  
Central Area ◽  
Small Subunit ◽  
Molecular Characteristics ◽  
Rbcl Gene ◽  
Freshwater Species ◽  
Sequence Analyses ◽  
Morphological Comparison ◽  
Molecular Analyses ◽  
Rbcl Gene Sequences

Two new benthic freshwater species belonging to the genus Achnanthidium were found in Korea. Achnanthidium ovale sp. nov. and A. cavitatum sp. nov. are described as new species based on light and scanning electron microscopy observations and molecular analyses. Both species are compared with the type material of morphologically similar taxa. Achnanthidium ovale differs from other species belonging to the A. pyrenaicum complex in outline, striation pattern, raphe central endings, and freestanding areolae at the apices. Achnanthidium cavitatum differs from other species in the A. minutissimum complex in outline, broad axial central area in the raphel ess valve, and slit-like areolae near the axial central area. We assessed their molecular characteristics by analyzing nuclear small subunit (SSU) rRNA and chloroplast-encoded rbcL gene sequences. Both the morphological comparison and the SSU and rbcL sequence analyses provide strong evidence to support the recognition of A. ovale and A. cavitatum as new species.

Molecular and morphological evidence for a new species in the genus Sirodotia (Batrachospermales, Rhodophyta) from the State of Assam, India

Phytotaxa ◽  
2020 ◽  
Vol 437 (3) ◽  
pp. 121-134
Author(s):  
NATALIA L. ROSSIGNOLO ◽  
FARISHTA YASMIN ◽  
JOHN A. WEST ◽  
E.K. GANESAN ◽  
ORLANDO NECCHI JUNIOR
Keyword(s):  
New Species ◽  
Dna Sequence ◽  
Dna Sequences ◽  
Sequence Data ◽  
The State ◽  
Morphological Data ◽  
Morphological Evidence ◽  
Full Description ◽  
Rbcl Gene ◽  
A New Species

In India the genus Sirodotia has been documented solely on morphological data. A new species of Sirodotia (Sirodotia assamica sp. nov.) was found in two localities in the State of Assam, India. Phylogenetic relationships of the new species were inferred on the basis of DNA sequence data for the plastid rbcL gene and the barcode region of the mitochondrial COI-5P gene. Taxonomic affinities of the new species were determined by morphological analyses and a distinctive character was found for this species: spermatangia arranged in clusters. Although this character is also observed in S. huillensis, both species are genetically highly divergent (4.5–5.0% for rbcL and 9.6–10.1% for COI-5P). DNA sequences from Indian specimens formed a well-supported clade, sister to S. delicatula from Malaysia. DNA sequence divergence between S. assamica and S. delicatula varied from 2.5–2.7% for rbcL and COI-5P. Intraspecific divergence between the two sequences from India were low (0.4–0.5%). A full description and photographs of the new species are provided, as well as a comparison with morphologically similar and phylogenetically allied species reported from India and other Asian regions.

Earning your stripes: a second species of striped gecko in the New Zealand gecko genus Toropuku (Gekkota: Diplodactylidae)

Zootaxa ◽  
2020 ◽  
Vol 4890 (4) ◽  
pp. 578-588
Author(s):  
RODNEY A. HITCHMOUGH ◽  
STUART V. NIELSEN ◽  
AARON M. BAUER
Keyword(s):  
New Species ◽  
New Zealand ◽  
Conservation Status ◽  
Distinct Species ◽  
Species Level ◽  
Morphological Evidence ◽  
Evidence Based ◽  
Cook Strait ◽  
North And South ◽  
A New Species

The New Zealand diplodactylid gecko genus Toropuku is currently monotypic, but the sole member of the genus, T. stephensi, is distributed in two disjunct, geographically distant regions of New Zealand – the islands of Cook Strait (which includes the type locality, Stephens Island), between New Zealand’s North and South Islands, and the Coromandel Peninsula, in the northeastern North Island. Previously published phylogenetic results, based on three total individuals, recognized substantial—possibly species-level—diversity between these disparate localities, although no taxonomic decisions were made at that time. More recently, additional animals have been found on the Coromandel Peninsula. We here present phylogenetic and morphological evidence based on this expanded dataset to formally describe the populations on the Coromandel Peninsula as a new species, Toropuku inexpectatus sp. nov. The specific epithet refers to the species’ surprise discovery in a herpetologically well-surveyed area. The recognition of T. inexpectatus sp. nov. as a distinct species has implications for the conservation status of T. stephensi, which is now considered restricted to three islands in Cook Strait. 

scholarly journals Discovery of the freshwater sponge genus Corvospongilla Annandale (Porifera: Spongillida) in Australia with the description of a new species and phylogeographic implications

Limnology ◽  
2021 ◽  
Author(s):  
Renata Manconi ◽  
Dirk Erpenbeck ◽  
Jane Fromont ◽  
Gert Wörheide ◽  
Roberto Pronzato
Keyword(s):  
New Species ◽  
Morphological Traits ◽  
Freshwater Sponge ◽  
Freshwater Sponges ◽  
Molecular Analyses ◽  
Biogeographic Patterns ◽  
Hydrographic Basin ◽  
Integrative Systematics ◽  
North Western ◽  
A New Species

AbstractA recent discovery of freshwater sponges in an unexplored hydrographic basin in north-western Australia provided the opportunity to investigate the genus Corvospongilla Annandale (Spongillida: Spongillidae) using integrative systematics. Emendation of the genus diagnosis is provided. A comparative analysis of a Corvospongilla global dataset of morphological traits together with biogeographic patterns disclosed a new Australasian Corvospongilla species and along with molecular analyses provided the basis for a phylogenetic and phylogeographic tree for some Asian, Afrotropical and Australasian lineages.

A new species and two new records of Amanita (Amanitaceae; Basidiomycota) from South Korea

Phytotaxa ◽  
2020 ◽  
Vol 451 (1) ◽  
pp. 21-33
Author(s):  
JONG WON JO ◽  
YOUNG-NAM KWAG ◽  
HYUNG SO KIM ◽  
HYUN LEE ◽  
SANG-KUK HAN ◽  
...  
Keyword(s):  
New Species ◽  
South Korea ◽  
New Records ◽  
Monophyletic Clade ◽  
First Report ◽  
A New Species

A new species of Amanita sect. Roanokenses, A. brunneofolia, from South Korea, is described based on morphological and molecular evidences. The species is characterized by medium- to large-sized basidiomata, a greenish white pileus covered with brownish, floccose pyramidal volval remnants, an appendiculate margin, reddish brown lamellae, a long radicating stipe, and ellipsoid to elongate amyloid basidiospores. Based on both nrLSU and combined dataset (nrLSU, rpb2 and tef1-α), A. brunneofolia formed a monophyletic clade and clearly separated from other Amanita species. In addition, we describe two other Amanita species in A. sect. Roanokenses, namely, A. caojizong and A. sphaerobulbosa. This is the first report of these species for South Korea.

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