Three new Hantzschia species (Bacillariophyta) from the Maritime Antarctic Region

Phytotaxa ◽  
2018 ◽  
Vol 371 (3) ◽  
pp. 168 ◽  
Author(s):  
MARIE BULÍNOVÁ ◽  
NATALIA KOCHMAN-KĘDZIORA ◽  
KATEŘINA KOPALOVÁ ◽  
BART VAN DE VIJVER
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Morphological Analysis ◽  
South Shetland Islands ◽  
Maritime Antarctic ◽  
Antarctic Region ◽  
Shetland Islands ◽  
James Ross Island ◽  
Three New Species ◽  
Scanning Electron

Following an earlier revision of the genus Hantzschia (Bacillariophyta) in the Maritime Antarctic Region, several at present unidentified or poorly known taxa of this aerophilic genus have been investigated using both light and scanning electron microscopy. Based on the morphological analysis of the observations, three new species are currently described: Hantzschia australabundans sp. nov., H. zidarovae sp. nov. and H. zikmundiana sp. nov. The new species differ from comparable taxa in valve outline, structure of the internal proximal raphe endings and structure of the striae and areolae. Additional observations are presented on Hantzschia amphioxys and its forma muelleri, H. abundans and H. incognita, based on observations of Antarctic populations from the South Shetland Islands, Vega Island and James Ross Island. Brief notes on the ecology of all reported species are added.

Ten new Bacillariophyta species from James Ross Island and the South Shetland Islands (Maritime Antarctic Region)

Phytotaxa ◽  
2016 ◽  
Vol 272 (1) ◽  
pp. 37 ◽  
Author(s):  
RALITSA ZIDAROVA ◽  
KATEŘINA KOPALOVÁ ◽  
BART VAN DE VIJVER
Keyword(s):  
New Species ◽  
South Shetland Islands ◽  
Similar Species ◽  
Maritime Antarctic ◽  
The South ◽  
Antarctic Region ◽  
Shetland Islands ◽  
James Ross Island ◽  
The Antarctic

The present paper describes 10 new diatom (Bacillariophyta) species from the Maritime Antarctic Region. Five of the newly described taxa: Caloneis australis sp. nov., Mayamaea sweetloveana sp. nov., Navicula romanedwardii sp. nov., Sellaphora antarctica sp. nov. and Sellaphora gracillima sp. nov. have been previously reported from the Antarctic Region but were force-fitted into incorrect names. Five other taxa: Chamaepinnularia elliptica sp. nov., Cosmioneis regigeorgiensis sp. nov., Mayamaea tytgatiana sp. nov., Muelleria pimpireviana sp. nov. and Pinnularia pinseeliana sp. nov. are newly discovered taxa. The morphology of all new species is studied using both light and scanning electon microscope observations and compared with similar species from the Antarctic Region and worldwide. Data about the ecology and confirmed Antarctic distribution of the new species are added.

Luticola puchalskiana, a new small terrestrial Luticola species (Bacillariophyceae) from the Maritime Antarctic Region

Phytotaxa ◽  
2020 ◽  
Vol 450 (1) ◽  
pp. 85-94
Author(s):  
NATALIA KOCHMAN-KĘDZIORA ◽  
RALITSA ZIDAROVA ◽  
TERESA NOGA ◽  
MARIA OLECH ◽  
BART VAN DE VIJVER
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Analysis ◽  
New Taxon ◽  
Maritime Antarctic ◽  
Antarctic Region ◽  
Diatom Flora ◽  
Terrestrial Habitats ◽  
Two Populations ◽  
Scanning Electron

During a survey of the terrestrial diatom flora of the Maritime Antarctic Region, an unknown Luticola taxon that could not be identified using the currently available literature was observed on two islands of the South Shetland Archipelago. After a detailed morphological analysis and comparison, the unknown taxon is described as Luticola puchalskiana sp. nov. The new species can be separated from other Luticola species based on its valve dimensions, stria density and the shape of both central and terminal raphe endings. Two populations of the new taxon were observed in samples collected from terrestrial habitats. The morphology of Luticola puchalskiana is elaborately described and illustrated using both light and scanning electron microscopy observations. A comparison is made with a large number of other morphologically similar Luticola species from the entire (sub)Antarctic Region.

Aulacoseira glubokoyensis sp. nov. (Bacillariophyceae), a new centric diatom from the Maritime Antarctic region

Phytotaxa ◽  
2017 ◽  
Vol 328 (2) ◽  
pp. 149
Author(s):  
ANNA BEATRIZ JONES OAQUIM ◽  
GLEYCI A.O. MOSER ◽  
HEITOR EVANGELISTA ◽  
MARCUS VINÍCIUS LICÍNIO ◽  
BART VAN DE VIJVER
Keyword(s):  
Dendritic Spines ◽  
South Shetland Islands ◽  
Similar Species ◽  
Centric Diatom ◽  
King George Island ◽  
Maritime Antarctic ◽  
Antarctic Region ◽  
Fildes Peninsula ◽  
Shetland Islands ◽  
Scanning Electron

A new centric diatom, Aulacoseira glubokoyensis sp. nov., is described from the Maritime Antarctic region. The morphology of the species is illustrated using detailed light and scanning electron microscopy observations. Its main discriminating features include the presence of typical irregularly shaped dendritic spines, at least two rimoportulae, marginal striae on the discus and a very large Ringleiste. The new species is compared to similar species worldwide. Aulacoseira glubokoyensis has only been observed in a sediment core taken from Profound Lake on the Fildes Peninsula (King George Island, South Shetland Islands).

A new species of Nagumoea (Bacillariophyta) from Antarctica, and a further consideration of the systematic position of the genus

Phytotaxa ◽  
2018 ◽  
Vol 349 (2) ◽  
pp. 152 ◽  
Author(s):  
BART VAN DE VIJVER ◽  
J. PATRICK KOCIOLEK
Keyword(s):  
New Species ◽  
Systematic Position ◽  
South Shetland Islands ◽  
Diatom Species ◽  
Maritime Antarctic ◽  
Morphological Comparison ◽  
Shetland Islands ◽  
Livingston Island ◽  
A New Species ◽  
Scanning Electron

Nagumoea livingstonensis sp. nov., a new diatom species is described from a coastal pool on the Maritime Antarctic Livingston Island, South Shetland Islands, based on light and scanning electron microscopy observations. A morphological comparison is made with the two other known Nagumoea taxa. The new species can be separated by the clear hyaline line between the valve face and mantle areolae, differences in the structure of its a scalariform valvocopula and broader fibulae.                The taxonomic position of the genus Nagumoea is discussed. A placement within the Rhopalodiales is doubtful based on the absence of clover-shaped areolae coverings in Nagumoea making the order of Bacillariales a more probable position.

Three new species of Chordodes and new data on hairworms (Nematomorpha) from Ecuador

Zootaxa ◽  
2009 ◽  
Vol 2205 (1) ◽  
pp. 37-52
Author(s):  
CRISTINA DE VILLALOBOS ◽  
FERNANDA ZANCA ◽  
ALVARO BARRAGAN YANEZ
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Three New Species ◽  
Scanning Electron

The presently known freshwater Nematomorpha from Ecuador include only three species. Seven species of hairworms are herein firstly recorded from this country, which makes 10 the known species inhabiting Ecuador. Four of them are redescribed and three new species of Chordodes (C. alticuspis, C. ecuatoriensis and C. ruginosus) are described. All species are described using scanning electron microscopy. A list of all species known from Ecuador is also included.

Taxonomy of the genus Craspedomerus Bernhauer, 1911 (Coleoptera: Staphylinidae: Philonthina) from China

Zootaxa ◽  
2010 ◽  
Vol 2506 (1) ◽  
pp. 1 ◽  
Author(s):  
LIANG LI ◽  
HONG-ZHANG ZHOU
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Species Identification ◽  
Geographical Distribution ◽  
Additional Species ◽  
Three New Species ◽  
First Time ◽  
Scanning Electron

Three new species of the genus Craspedomerus from China are described and illustrated: C. giganteus Li & Zhou sp. n. from Sichuan, C. gongshanus Li & Zhou sp. n. from Yunnan and C. zhangi Li & Zhou sp. n. from Tibet. Four species are reported for the first time from China: C. sinetuber (Coiffait, 1977a) from Tibet, C. cyanipennis Scheerpeltz, 1976b, C. ganeshensis Coiffait, 1983 and C. glenoides (Schubert, 1908) from Yunnan. These four and two additional species previously recorded from China (C. beckeri Bernhauer, 1934 and C. violaceipennis Cameron, 1928 are redescribed and illustrated. Sensory peg setae located on the underside of the paramere of the aedeagus of all nine Chinese species are compared using scanning electron microscopy (SEM) and the result shows that this character is useful for species identification. A key to the Chinese species of Craspedomerus is presented and geographical distribution of all sixteen species of Craspedomerus is mapped.

Planothidium kaetherobertianum, a new marine diatom (Bacillariophyta) species from the Adriatic Sea

Phytotaxa ◽  
2019 ◽  
Vol 425 (2) ◽  
pp. 105-112 ◽  
Author(s):  
BART VAN DE VIJVER ◽  
SUNČICA BOSAK
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Morphological Analysis ◽  
Adriatic Sea ◽  
Large Population ◽  
Caretta Caretta ◽  
Marine Diatom ◽  
Loggerhead Sea Turtles ◽  
Diatom Flora ◽  
Scanning Electron

During a survey of the epizoic diatom flora on carapaces of loggerhead sea turtles (Caretta caretta) from the Adriatic Sea, a fairly large population of an unknown marine Planothidium species was observed. Detailed morphological analysis based on scanning electron microscopy observations and comparison with a large number of known Planothidium species, resulted in the description of the new species as Planothidium kaetherobertianum sp. nov. The new species is characterized by a rapheless valve showing a rather broad axial area with irregular, shallow depressions, striae composed of only 1–2 rows of very small areolae. The raphevalve has biseriate striae with a short third row of areolae inserted between the two rows of areolae near the valve margins. The species shows some resemblance with the group of species around Planothidium delicatulum. The new species is illustrated using both LM and SEM observations and compared with other resembling marine and brackish Planothidium species.

A new genus and some cryptic species of Arctic and boreal calloporid cheilostome bryozoans

2006 ◽  
Vol 86 (5) ◽  
pp. 1035-1046 ◽  
Author(s):  
Piotr Kuklinski ◽  
Paul D. Taylor
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Type Species ◽  
New Genus ◽  
East Greenland ◽  
North East ◽  
Three New Species ◽  
Cheilostome Bryozoans ◽  
Scanning Electron

Study of type and other material using scanning electron microscopy has permitted the recognition of three new species and one new genus of Arctic and boreal calloporid anascans. Originally described from the Gulf of St Lawrence, Callopora whiteavesi is reassigned to Flustrellaria, a calloporid genus not previously reported extant. Material from north-east Greenland misidentified as C. whiteavesi is described as C. weslawski sp. nov. The new genus Septentriopora is introduced for calloporids lacking pore chambers, with a distolateral pair of small interzooidal avicularia that face proximally or proximolaterally, and a reduced ovicell. The type species of Septentriopora, Tegella nigrans, has frequently been misidentified. Many of the supposed records of this species belong to two other species, described here as Septentriopora karasi sp. nov. and S. denisenkoae sp. nov. The apparent ovicell in S. karasi is particularly unusual, being vestigial and kenozooid-like in morphology.

A revision of the genus Calcigorgia (Cnidaria, Octocorallia, Acanthogorgiidae) with the description of three new species

Zootaxa ◽  
2019 ◽  
Vol 4571 (1) ◽  
pp. 1
Author(s):  
ASAKO K. MATSUMOTO ◽  
LEEN P. VAN OFWEGEN ◽  
FREDERICK M. BAYER
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Bering Sea ◽  
Sea Of Okhotsk ◽  
Japan Sea ◽  
Sem Images ◽  
Three New Species ◽  
Scanning Electron

Octocorals of the Acanthogorgiid genus Calcigorgia have been examined, from Japan, Sea of Okhotsk, and Bering Sea. The four known species are re-described and scanning electron microscopy (SEM) images of sclerites presented. Three other species are described and depicted, bringing the total number of Calcigorgia species to seven. Calcigorgia simushiri, Dautova 2018 is synonymized with C. spiculifera Broch, 1935. A neotype for C. spiculifera has been designated. 

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