Oricymba gongshanensis sp. nov. (Cymbellaceae; Bacillariophyceae), a new species from southwest China

Phytotaxa ◽  
2021 ◽  
Vol 508 (1) ◽  
Author(s):  
JI-SHU GUO ◽  
WEN-WEN MENG ◽  
XIAO-YANG HE ◽  
YUN ZHANG ◽  
YAN-LING LI ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Yunnan Province ◽  
Southwest China ◽  
Morphological Description ◽  
Single Opening ◽  
A New Species ◽  
Scanning Electron ◽  
Apical Axis

Oricymba gongshanensis sp. nov. is identified as a new cymbelloid species, and described from a rock wall in Gongshan County, Yunnan Province, China. A detailed morphological description of the new species is presented, based on light and scanning electron microscopy. O. gongshanensis sp. nov. has the features that assign it to the genus Oricymba, including a thickened ridge positioned around the margin of the valve, presence of pore fields at the apices, a stigma with a single opening externally and two openings internally together with external distal raphe ends deflected dorsally. There are three features that easily distinguish the new species from all others in the genus. They include: 1) valves that are weakly asymmetrical about the apical axis, 2) presence of mostly biseriate striae and 3) areolae that are round to elliptical in shape. Among the currently described species of Oricymba, the new species is most similar to O. tianmuensis in valve shape, but is easily distinguished by the degree of asymmetry about the apical axis and presence of biseriate striae. These findings increase our understanding the morphology and distribution of the genus Oricymba in China.

Cymbella xiaojinensis sp. nov., a new cymbelloid diatom species (Bacillariophyceae) from high altitude lakes, China

Phytotaxa ◽  
2021 ◽  
Vol 482 (1) ◽  
pp. 55-64
Author(s):  
YUN ZHANG ◽  
MENGNA LIAO ◽  
YAN-LING LI ◽  
FENG-QIN CHANG ◽  
JOHN PATRICK KOCIOLEK
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Central Area ◽  
Morphological Characteristics ◽  
Morphological Description ◽  
Hengduan Mountains ◽  
Diatom Species ◽  
A New Species ◽  
Scanning Electron

This paper describes a new species of Cymbella from an alpine lake in the Hengduan Mountains, southwestern China. The detailed morphological description of the new species, named Cymbella xiaojinensis sp. nov. is presented, based on light and scanning electron microscopy. The main features of C. xiaojinensis are characterized by strongly dorsiventral, triangular valves with a strongly reverse-lateral raphe system positioned near the proximal ends and an asymmetrical, larger central area, occupying approximately 1/2 of the width with the valve. Most morphological characteristics of the new species are similar to C. shudunensis, C. terrafuegiana, C. pamirensis, and C. gravida, but differ in details of size, valve shape, striae density, central area, and number of stigmata.

scholarly journals One new species of Cymbella C.A. Agardh (Bacillariophyta) from high altitude lakes in the Hengduan Mountains of Southwest China

2021 ◽  
Vol 80 (2) ◽  
pp. 184-190
Author(s):  
Qi Liu ◽  
Han Wu ◽  
Yan-Ling Li ◽  
John Patrick Kociolek
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Southwest China ◽  
Central Area ◽  
Morphological Characteristics ◽  
Morphological Description ◽  
Hengduan Mountains ◽  
One New Species ◽  
A New Species ◽  
Scanning Electron

This paper describes a new species of the genus Cymbella C.A. Agardh from an alpine lake in the Hengduan Mountains of southwestern China. A detailed morphological description of the new species, named Cymbella luoyulanae sp. nov., is presented; the description is based on light and scanning electron microscopy. The main features of C. luoyulanae are strongly dorsiventral valves with strongly reverse-lateral raphe branches near the proximal ends, a large central area occupying approximately a half of the width with the valve and slit-like areolae comprising striae that may be unseriate or partially biseriate. The new species has morphological characteristics that resemble those of C. heihainensis Y.Li et Gong, C. modicepunctata Krammer and C. asiatica Metzeltin, Lange-Bertalot et Y.Li, but it differs from these three species in details of size, valve shape, striae density, central area, and number of stigmata.

Cymbopleura huohuaensis sp. nov. (Cymbellaceae; Bacillariophyceae), a new species from Sichuan Province, China

Phytotaxa ◽  
2022 ◽  
Vol 530 (2) ◽  
pp. 237-244
Author(s):  
JI-SHU GUO ◽  
WEN-WEN MENG ◽  
JOHN PATRICK KOCIOLEK ◽  
SOPHIA YANG ◽  
YAN-LING LI
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Central Area ◽  
Sichuan Province ◽  
The Other ◽  
Morphological Description ◽  
Apical Pore ◽  
A New Species ◽  
Scanning Electron ◽  
Apical Axis

Cymbopleura huohuaensis sp. nov. is identified as a new species and described from stone surfaces in Huohua Lake, Sichuan Province, China. A detailed morphological description of the new species is presented, based on light and scanning electron microscopy. Cymbopleura huohuaensis sp. nov. has the features that assign it to the genus Cymbopleura, including the raphe with dorsally deflected terminal fissures and ventrally curved central raphe ends, punctate-lineate striae, and the absence of apical pore fields and stigmata. There are five features that easily distinguish the new species from the other similar taxa within the genus: 1) linear-lanceolate central area, 2) mostly slit-like, partly T-shaped, V-shaped or irregularly-shaped areolae, 3) strongly reverse-lateral raphe, 4) slightly truncate to obtusely rounded ends and 5) the highest density of areolae (30–50 in 10 μm). Among the currently described species of Cymbopleura, the new species is in general most similar to C. subaequalis var. pertruncata in valve shape and possessing a reverse-lateral raphe, but is easily distinguished from that taxon by the size and shape of valve, shape of central area, and the degree of asymmetry about the apical axis and its notable lack of an intermissio. This species might be better placed in the C. austriaca group due to its lack of an intermissio. These findings increase our understanding the morphology and distribution of the genus Cymbopleura in China.

A new species of Cribraria (Myxomycetes) from Australia

2018 ◽  
Vol 52 (2) ◽  
pp. 379-385 ◽  
Author(s):  
S. L. Stephenson ◽  
Yu. K. Novozhilov ◽  
P. Wellman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Lemon Yellow ◽  
Moist Chamber ◽  
Light Yellow ◽  
Dark Violet ◽  
The Stability ◽  
A New Species ◽  
Scanning Electron

A new species of Cribraria, described herein as C. bicolor, appeared in moist chamber cultures on samples of the bark of Eucalyptus sp. collected at two localities in Australia. The morphology of representative specimens was examined by light and scanning electron microscopy, and micrographs of relevant morphological details of sporocarps and spores are provided. The species has a number of distinct and unique morphological features, including a glossy bright-violet globose sporotheca and a two-colored long stalk which is bright-red over the lower one-third and light yellow or lemon-yellow over the upper two-thirds. The combination of these characteristics as well as a shallow calyculus which is dark-violet when viewed under a dissecting microscope and bright red in transmitted light when mounted in lactophenol makes C. bicolor a well-defined morphospecies when compared to all other species of Cribraria. The stability of the taxonomic characters of the species was confirmed by an examination of a number of specimens.

Encyonema oblonga (Bacillariophyta, Cymbellaceae), a new species from Shanxi Province, China

Phytotaxa ◽  
2021 ◽  
Vol 480 (3) ◽  
pp. 284-290
Author(s):  
QI LIU ◽  
JIAJIA LI ◽  
QUANXI WANG ◽  
JOHN PATRICK KOCIOLEK Patrick Kociolek ◽  
Shulian Xie
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Shanxi Province ◽  
Diatom Flora ◽  
A New Species ◽  
Scanning Electron ◽  
Freshwater Diatom

A new species, Encyonema oblonga Liu & Xie, is collected during a survey of the freshwater diatom flora of Manghe River, Shanxi, China. The valves of this new species are oblong with rounded apices and have the features typical of Encyonema, including complex areolae. We compare the new species with the most similar taxa, E. leei, E. leei var. sinensis and E. appalachianum and consider that  E. leei var. sinensis is the valid name.  The morphology of E. oblonga is documented with light and scanning electron microscopy.

Sellaphora pelagonica (Bacillariophyceae), a new species from dystrophic ponds in the Republic of North Macedonia

Phytotaxa ◽  
2021 ◽  
Vol 496 (2) ◽  
pp. 121-133
Author(s):  
HRISTINA KOCHOSKA ◽  
DUŠICA ZAOVA ◽  
ANASTASIJA VIDESKA ◽  
DANIJELA MITIC-KOPANJA ◽  
HRISTINA NAUMOVSKA ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
The Republic ◽  
A New Species ◽  
Scanning Electron ◽  
Intermittent Ponds

Lowland intermittent ponds, although biologically important, are poorly studied water habitats. During the analyses of the material taken from lowland pond in Pelagonia Valley, and Vitachevo, Republic of North Macedonia, the diatom Sellaphora pelagonica sp. nov. was recorded and described based on light and scanning electron microscopy. The species is characterized by a strictly linear valve outline with parallel to slightly concave margins and broadly rounded ends, 15.0–40.0 µm long and 5.0–7.0 µm wide. These features, together with raphe structure and areolar shape are compared with several similar taxa currently ascribed to Sellaphora.

Fragilaria irregularis sp. nov. a new araphid species (Fragilariaceae, Bacillariophyta) from the River Adegoy, Krasnodar Territory, Russia

Phytotaxa ◽  
2021 ◽  
Vol 508 (2) ◽  
Author(s):  
DMITRY CHUDAEV ◽  
INGRID JÜTTNER ◽  
BART VAN DE VIJVER
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Similar Species ◽  
New Taxon ◽  
Weakly Convex ◽  
Diatom Flora ◽  
A New Species ◽  
Scanning Electron

During a survey of the diatom flora of the Adegoy River (Krasnodar Territory, Russia), an unknown Fragilaria species (Bacillariophyta) was found that could not be identified using the currently available literature and here we describe it as a new species. The morphology of Fragilaria irregularis sp. nov. was studied using light and scanning electron microscopy and compared to similar species including Fragilaria deformis, F. rinoi, F. septentrionalis and Fragilariforma bicapitata. It differed from these taxa in several characters. Most observed valves showed an irregular striation pattern, a feature not observed in other species. Other important differences include valve outline (linear with parallel margins) and stria density (7–14 in 10 µm, lower compared to all other species). The new taxon has a linear valve outline with parallel to weakly convex margins, subcapitate apices and a very irregular, coarse striation pattern.

A new species of Neidiomorpha (Bacillariophyceae) from Dianshan Lake in Shanghai, China

Phytotaxa ◽  
2019 ◽  
Vol 423 (2) ◽  
pp. 99-104
Author(s):  
FEN LUO ◽  
QI YANG ◽  
KAIJUAN GUO ◽  
TENGTENG LIU ◽  
QUANXI WANG ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Central Area ◽  
Diatom Species ◽  
Dianshan Lake ◽  
A New Species ◽  
Scanning Electron

A new diatom species, Neidiomorpha dianshaniana sp. nov., found in Dianshan Lake in Shanghai, China, is described herein. The morphology of N. dianshaniana has been documented by light and scanning electron microscopy. Neidiomorpha dianshaniana valves are elliptical in outline with rostrate apices. Raphe is almost straight and filiform. The axial area is narrow and linear. The central area is small, round to transversely elliptical or irregular. Striae are slightly radiate and almost parallel near the apices. Puncta are arranged in undulating longitudinal rows. Neidiomorpha dianshaniana’s most visible feature is its lack of central constriction, in which respect it differs from the three other species in the genus Neidiomorpha.

Achnanthales from historical Grunow collection in Porto Subzanski, Croatia

2018 ◽  
Vol 61 (6) ◽  
pp. 573-593 ◽  
Author(s):  
Catherine Riaux-Gobin ◽  
Luc Ector ◽  
Andrzej Witkowski ◽  
Anton Igersheim
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Coastal Environment ◽  
New Combination ◽  
Tropical Environments ◽  
A New Species ◽  
Scanning Electron

Abstract In the historical Grunow collection in Vienna, a piece of a broken slide covered with mica contained diatom material from Porto Subzanski, a coastal environment in Croatia. This material was examined in scanning electron microscopy. Several poorly documented or improperly assigned taxa within the Achnanthales, namely in Amphicocconeis and Cocconeis, were re-examined. A new combination of Amphicocconeis and a new species of Cocconeis are proposed. The new species, Cocconeis subzanskiensis, is closely related to Cocconeis placentula, except for the lack of a characteristic hyaline sub-marginal rim on the raphe valve, and is compared with other marine taxa pertaining to the same group. Recently described in tropical environments, Cocconeis coronatoides has been found in the Grunow material.

scholarly journals Balantidium grimi n. sp. (Ciliophora, Litostomatea), a new species inhabiting the rectum of the frog Quasipaa spinosa from Lishui, China

Parasite ◽  
2018 ◽  
Vol 25 ◽  
pp. 29 ◽  
Author(s):  
Weishan Zhao ◽  
Can Li ◽  
Dong Zhang ◽  
Runqiu Wang ◽  
Yingzhen Zheng ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phylogenetic Analysis ◽  
New Species ◽  
Body Shape ◽  
Ssu Rdna ◽  
The Body ◽  
Molecular Phylogenetic ◽  
A New Species ◽  
Scanning Electron

Balantidium grimi n. sp. is described from the rectum of the frog Quasipaa spinosa (Amphibia, Dicroglossidae) from Lishui, Zhejiang Province, China. The new species is described by both light microscopy (LM) and scanning electron microscopy (SEM), and a molecular phylogenetic analysis is also presented. This species has unique morphological features in that the body shape is somewhat flattened and the vestibulum is “V”-shaped, occupying nearly 3/8 to 4/7 of the body length. Only one contractile vacuole, situated at the posterior body, was observed. The phylogenetic analysis based on SSU-rDNA indicates that B. grimi groups together with B. duodeni and B. entozoon. In addition, the genus Balantidium is clearly polyphyletic.

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