Сentric diatoms (Biddulphiales, Hemiaulales, Rhizosoleniales, Chaetocerotales, Bacillariophyta) from Neogene deposits of the Fisher Massif (Prince Charles Mountains, East Antarctica)

2012 ◽  
Vol 46 ◽  
pp. 36-45
Author(s):  
R. M. Gogorev ◽  
Z. M. Pushina
Keyword(s):  
New Species ◽  
Marine Sediments ◽  
East Antarctica ◽  
Detailed Data ◽  
Centric Diatoms ◽  
Two New Species

Detailed data on morphology and taxonomy of 11 species of centric diatoms from the Neogene glacial-marine sediments of the Fisher Massif (Prince Charles Mountains, East Antarctica) are presented. Two new species Dicladia antarctica Gogorev et Pushina sp. nov. and Trigonium antarcticum Gogorev et Pushina sp. nov. are described.

Some centric diatoms (Bacillariophyta) from Neogene deposits of the Fisher Massif (Prince Charles Mountains, East Antarctica)

2011 ◽  
Vol 45 ◽  
pp. 32-49
Author(s):  
R. M. Gogorev ◽  
Z. V. Pushina
Keyword(s):  
Marine Sediments ◽  
East Antarctica ◽  
Benthic Diatoms ◽  
Detailed Data ◽  
Planktonic Algae ◽  
Centric Diatoms ◽  
Planktonic Diatom ◽  
Oceanic Species ◽  
Diatom Complexes

The richest diatom complexes have revealed due to the study of glacial-marine sediments sampled in the Fisher Massif (Prince Charles Mountains, East Antarctica) during 52nd and 53rd Russian Antarctic Expeditions (Polar Marine Geol. Survey Expedition) in 2006/07 and 2007/08. Three diatom complexes are distinguished according to different palaeoecological conditions: the planktonic one is located in the basis of the outcrop, while mixed planktonic-benthic and benthic ones being located above. The planktonic diatom complexes are dominated by two oceanic species Actinocyclus ingens (up to 8%) and Denticulopsis simonseni (up to 80%). There are 15 planktonic algae, e. g. Eucampia аntarctica, Fragilariopsis spp., Rhizosolenia spp., Rouxia antarctica, Podosira antarctica sp. nov., Stellarima microtrias; and also unknown and non-described benthic diatoms Achnanthes sp., Cocconeis spp., Rhabdonema (s. l.) spp. and Synedra (s. l.) spp. Detailed data on morphology and taxonomy of 10 centric diatoms are presented, including 3 newly described species.

­­­Rudgea agresteophila and R. hileiabaiana (Palicoureeae, Rubiaceae): two new species from eastern Bahia, Brazil

Phytotaxa ◽  
2015 ◽  
Vol 202 (4) ◽  
pp. 289 ◽  
Author(s):  
Carla Poleselli Bruniera ◽  
Daniela Cristina Zappi ◽  
Milton Groppo
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Ongoing Study ◽  
Type Locality ◽  
Calyx Tube ◽  
Detailed Data ◽  
Two New Species ◽  
Southern Bahia ◽  
High Diversity ◽  
Persistent Calyx

This work is part of a larger ongoing study of taxonomy and systematics of Rudgea (Rubiaceae), with the recognition of two new Brazilian species, R. agresteophila and R. hileiabaiana, described and illustrated here. The new species occur in the eastern Bahia State, Brazil, which is a place of high diversity for Rudgea. Rudgea agresteophila is morphologically distinct within the genus, by the combination of thickly coriaceous leaves, flowers with long calyx-tube and fruits crowned by a persistent calyx up to 6 mm long; and is known only from the type locality, in the municipality of Jequié. Rudgea hileiabaiana is distinguished by its coriaceous leaves, up to 30 cm long and round to cordate base, broadly infundibular corolla and unexpanded calyx; and it is restricted to southern Bahia. Detailed data on distribution and habitat, phenology and conservation status of both species are presented.

Marine nematodes from Polynesia Epsilonematidae and Draconematidae

1992 ◽  
Vol 43 (4) ◽  
pp. 663 ◽  
Author(s):  
N Gourbault ◽  
W Decraemer
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
Marine Sediments ◽  
Marine Nematodes ◽  
Additional Information ◽  
Two New Species

In marine sediments from French Polynesian coral reefs, the nematode family Epsilonematidae was represented by eight species. Bathyepsilonema salvati sp. nov. and Perepsilonerna moineaui sp. nov., two new species, are described and illustrated. Seven species of Draconematidae were also found. Dracograllus minutus Decraemer, Dracograllus timrni Allen and Noffsinger, and Apenodraconema chlidosis Allen and Noffsinger are redescribed and additional information is given. Four of these taxa were represented by females or juveniles only and could not be identified beyond genus.

scholarly journals Two new bairdiid ostracod species from the early Barremian–Hauterivian of the northern and central North Sea to the Atlantic margin off Norway

2018 ◽  
Vol 37 (1) ◽  
pp. 195-201
Author(s):  
Michael Ayress ◽  
Tom Gould
Keyword(s):  
New Species ◽  
North Sea ◽  
Marine Sediments ◽  
Large Size ◽  
Two New Species ◽  
Central North Sea ◽  
Atlantic Margin ◽  
Ostracod Species

Abstract. Two new species of bairdiid Ostracoda are described from the lower Barremian – Hauterivian interval of the Valhall and Åsgard formations in the northern and central North Sea and Atlantic margin off Norway. The new species are Pontocyprella valhalla (lsid:zoobank.org:act:CA6B273F-CFF6-4C38-B9F4-18188225A711, 18 January 2018) and Bairdia asgarda (lsid:zoobank.org:act:4A4DC817-A028-45FB-9287-ABF3794F2FCB, 18 January 2018). These species dominate the ostracod assemblage that occurs abundantly in early Barremian–Hauterivian deep marine sediments of the northern and central North Sea and Haltenbanken area off Norway. Pontocyprella valhalla is restricted to this interval and because of its large size and distinct shape is a useful stratigraphic marker species, its last appearance being within the early Barremian.

Notes on a small collection of phaneropterine bush-crickets (Insecta: Orthoptera: Tettigonioidea) from Central and Southern Madagascar with the description of two new species

Zootaxa ◽  
2019 ◽  
Vol 4563 (2) ◽  
pp. 297 ◽  
Author(s):  
KLAUS-GERHARD HELLER ◽  
CLAUDIA HEMP ◽  
BRUNO MASSA ◽  
JACQUES RAKOTONDRANARY ◽  
ANTON KRIŠTÍN
Keyword(s):  
New Species ◽  
Forest Ecology ◽  
Slovak Academy ◽  
Detailed Data ◽  
Two New Species ◽  
Small Collection ◽  
The University ◽  
Academy Of Sciences ◽  
First Time ◽  
Bush Crickets

During a joint ecological project of the Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia, and the University of Antananarivo, Madagascar, eight species (10 specimens) of phaneropterine bush-crickets were collected. Among them, two species were found as new to science (Mimoscudderia longicaudata n. sp., Paraphyrrhicia leuca n. sp.) and are described in this paper. Two other species (Plangia segonoides, Trigonocorypha maxima) were found the first time after their description more than 100 years ago. We provide first detailed data about their localities and habitat. 

Studies in the Ericaceae (Ericoideae) XVIII. Two new species ofErica from the southern part of South Africa

1996 ◽  
Vol 106 (5-8) ◽  
pp. 347-352
Author(s):  
E. G. H. Oliver ◽  
I. M. Oliver
Keyword(s):  
South Africa ◽  
New Species ◽  
Two New Species

A Synopsis of Dicliptera (Acanthaceae) in Brazil, with the Description of Two New Species

2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas
Keyword(s):  
New Species ◽  
South America ◽  
The State ◽  
Northeastern Brazil ◽  
Mato Grosso ◽  
The North ◽  
New Synonyms ◽  
Two New Species ◽  
Mato Grosso Do Sul ◽  
A New Species

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.

Two New Species of Aira (Poaceae) from the Iberian Peninsula and the Balearic Islands

2020 ◽  
Vol 45 (1) ◽  
pp. 75-84
Author(s):  
Llorenç Sáez ◽  
Javier López-Alvarado ◽  
Pere Fraga ◽  
Regina Berjano ◽  
M. Ángeles Ortiz ◽  
...  
Keyword(s):  
Risk Assessment ◽  
New Species ◽  
Iberian Peninsula ◽  
Diploid Species ◽  
Balearic Islands ◽  
Similar Species ◽  
Chromosome Counts ◽  
Two New Species

Abstract—Two new diploid species, Aira minoricensis and Aira hercynica, are described and illustrated, along with chromosome counts, risk assessment, distribution and habitat, phenology, and comparisons with morphologically similar species. A comparative table and a key for the species of Aira for the Iberian Peninsula and the Balearic Islands are provided to assist in the identification of these overlooked species, and their relationships to other taxa are discussed.

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