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.

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.

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.

Prangos aricakensis (Apiaceae), a new species from eastern Turkey

Phytotaxa ◽  
2019 ◽  
Vol 401 (1) ◽  
pp. 55
Author(s):  
LÜTFİ BEHÇET ◽  
YAKUP YAPAR ◽  
ŞÜKRÜ OLGUN
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Conservation Status ◽  
Eastern Anatolia ◽  
Fruit Characteristics ◽  
Diagnostic Characters ◽  
A New Species ◽  
Scanning Electron ◽  
Single Locality

Prangos aricakensis is described and illustrated as a new species from eastern Anatolia (Turkey), where it is known from a single locality in Arıcak (Elazığ) district. Its diagnostic characters are discussed and taxonomic comments are presented. Prangos aricakensis is similar to P. turcica, P. hulusii, P. ilanae and P. trifida, but it differs in hair, leaf, bract, bracteole and fruit characteristics. Fruit and pollen characteristics were investigated using ligth (LM) and scanning electron microscopy (SEM). Data on ecology and IUCN conservation status are also shown.

Mallomonas gusakovii sp. nov. (Chrysophyceae, Synurales), a new species from Phu Quoc Island, Vietnam

Phytotaxa ◽  
2019 ◽  
Vol 406 (3) ◽  
pp. 199-205
Author(s):  
EVGENIY S. GUSEV ◽  
DMITRY A. KAPUSTIN ◽  
NIKITA A. MARTYNENKO ◽  
ELENA E. GUSEVA ◽  
MAXIM S. KULIKOVSKIY
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Scale Morphology ◽  
Southern Vietnam ◽  
Silica Scale ◽  
Different Types ◽  
Means Of Transmission ◽  
A New Species ◽  
Scanning Electron

Mallomonas gusakovii sp. nov. is described from Vietnam based on silica-scale morphology studied by means of transmission and scanning electron microscopy. This species belongs to section Quadratae and is characterized by large and broad scales of three types with an internal reticulation, V-shaped rib and a forward projecting wing. Different types of the V-shaped rib in taxa from section Quadratae are discussed. Scales of Mallomonas gusakovii were found only in two sites in Phu Quoc Island, Southern Vietnam.

Pinworms (Nematoda: Thelastomatoidea) from Insects Collected in Mississippi, USA, with description of a new species of Protrellus Cobb, 1920 from the Cockroach Ischnoptera deropeltiformis Brunner von Wattenwyl, 1865 (Blattaria: Ectobiidae)

Zootaxa ◽  
2018 ◽  
Vol 4531 (4) ◽  
pp. 567
Author(s):  
RAMON A. CARRENO
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
New Host ◽  
Large Size ◽  
Opposite Pole ◽  
A New Species ◽  
Scanning Electron

Thelastomatoid nematodes from the hindguts of several species of insects were collected in 4 localities in Mississippi, U.S.A. Protrellus browni n. sp. is described from Ischnoptera deropeltiformis (Blattaria: Ectobiidae) using light and scanning electron microscopy. This species is distinguished on the basis of its large size as well as its large eggs having one broad end tapering toward the opposite pole and with the presence of small spines on part of the shell. Protrellus aurifluus (Chitwood, 1932) Basir, 1956 was found in Parcoblatta fulvescens (Blattaria: Ectobiidae). Four other species of blattarians sampled were negative for pinworms. Additional nematodes recovered from other hosts included Zonothrix columbianus Adamson & Buck 1989 (Thelastomatoidea: Pseudonymidae) from Tropisternus blatchleyi blatchleyi and Tropisternus collaris (Coleoptera: Hydrophilidae), Hystrignathus rigidus Leidy, 1850 and Xyo pseudohystrix Travassos & Kloss, 1958 (Thelastomatoidea: Hystrignathidae) from Odontotaenius disjunctus (Coleoptera: Passalidae). These findings include several new host and geographical records. 

Brachysira aristidesii sp. nov. (Bacillariophyceae, Brachysiraceae): a new species from oligotrophic and mesotrophic tropical reservoirs in southeastern Brazil

Phytotaxa ◽  
2020 ◽  
Vol 456 (1) ◽  
pp. 105-113
Author(s):  
STÉFANO ZORZAL-ALMEIDA ◽  
ELAINE C. RODRIGUES BARTOZEK ◽  
EDUARDO A. MORALES ◽  
DENISE C. BICUDO
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
High Water ◽  
Southeastern Brazil ◽  
Diatom Species ◽  
Tropical Reservoirs ◽  
A New Species ◽  
Piracicaba River ◽  
Scanning Electron

A new diatom species, Brachysira aristidesii sp. nov., is described from three oligotrophic and mesotrophic reservoirs in Piracicaba River basin, State of São Paulo, Brazil. Descriptions are based on light and scanning electron microscopy. The new species is mainly characterized by rhombic-lanceolate valves with strongly capitated ends, filiform and straight raphe, narrow and linear axial area, slightly radiate striae and transapically elongated areolae. It is compared to Brachysira microcephala, B. silvicola, B. vitrea, B. neoexilis and Nupela brachysiroides. Our findings suggest that Brachysira aristidesii is a species mainly associated to high water transparency, low to moderate conductivity, slightly acidic and low nutrient environments.

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