scholarly journals On the taxonomic status of Holothuria (Holothuria) tubulosa (s.s.) from the Algerian coast with the description of a new Mediterranean species, Holothuria (Holothuria) algeriensis n. sp. (Echinodermata: Holothuroidea: Holothuriidae)

Zootaxa ◽  
2021 ◽  
Vol 4981 (1) ◽  
pp. 89-106
Author(s):  
KARIM MEZALI ◽  
AHMED S. THANDAR ◽  
IHCENE KHODJA
Keyword(s):  
New Species ◽  
Discriminant Analysis ◽  
Linear Discriminant Analysis ◽  
Taxonomic Status ◽  
Mediterranean Species ◽  
Linear Discriminant ◽  
The North ◽  
North Eastern ◽  
Algerian Coast ◽  
A New Species

In this study we redescribe the taxonomy of some holothuriid species collected from different localities of the Algerian coastal waters. Morphological (anatomical and endoskeletal) and previous molecular studies show the presence of two distinct morphotypes of Holothuria (Holothuria) tubulosa “A” & “B”. Morphotype “A” corresponds to the classical Holothuria (Holothuria) tubulosa Gmelin 1791, described by Koehler (1921) and hereafter referred to as H. (H.) tubulosa (s.s.), while morphotype “B”, we believe, represents a new species, herein named H. (Holothuria) algeriensis n. sp. with characteristics significantly different from those of Holothuria (H.) tubulosa (s.s.). Both morphology and statistical analysis (Linear Discriminant Analysis) confirm significant differences between these two morphotypes. To visualize these differences, measurements made on ossicles of Holothuria (H.) tubulosa (s.s.) and Holothuria (H.) algeriensis n. sp. were compared with other species present in our collections, including the north-eastern Atlantic and Mediterranean Holothuria (Roweothuria) arguinensis Koehler & Vaney, 1906, recently recorded from Algerian waters, the Mediterranean Holothuria (Roweothuria) poli Delle Chiaje, 1824 and Holothuria (Holothuria) stellati Delle Chiaje, 1824. We conclude that the two morphotypes of H. (H.) tubulosa are significantly different to warrant the recognition of a new species, H. (H.) algeriensis n. sp. and the linear discriminant analysis (LDA) of the five species demonstrate this. 

Linaria argillicola (Plantaginaceae), a new species of L. sect. Supinae from the southern Iberian Peninsula

Phytotaxa ◽  
2018 ◽  
Vol 343 (2) ◽  
pp. 127 ◽  
Author(s):  
ANA JUAN ◽  
GABRIEL BLANCA ◽  
MIGUEL CUETO ◽  
JULIÁN FUENTES ◽  
LLORENÇ SÁEZ
Keyword(s):  
Principal Component Analysis ◽  
New Species ◽  
Discriminant Analysis ◽  
Linear Discriminant Analysis ◽  
Endemic Species ◽  
Morphological Differentiation ◽  
Principal Component ◽  
Linear Discriminant ◽  
Wide Tube ◽  
A New Species

A new species of the genus Linaria is described, illustrated and compared with its morphologically closest relatives from L. sect. Supinae: L. accitensis, L. aeruginea, L. tristis and L. badalii. A principal component analysis (PCA), correspondence analysis (CA), and linear discriminant analysis (LDA) were carried out for morphological differentiation. The species is characterized by long abaxial sepals, corolla mostly yellow or rarely reddish with wide tube, wide winged seeds with a tuberculate seminal disc, and a non-continuous fruiting inflorescence. Linaria argillicola is an edapho-endemic species, growing on the marly gypsiferous deposits from the Guadiana Menor river basin, on the border of Granada and Jaén provinces (Andalusia, Spain).

scholarly journals Encephalartos verrucosus (Zamiaceae): a new species from the north-eastern Transvaal

1988 ◽  
Vol 54 (5) ◽  
pp. 487-490 ◽  
Author(s):  
P.J. Robbertse ◽  
Suzelle van der Westhuizen ◽  
P. Vorster
Keyword(s):  
New Species ◽  
The North ◽  
North Eastern ◽  
A New Species

Eucalyptus fusiformis (Myrtaceae), a new species of Ironbark (in the Informal E. series Paniculatae Pryor et Johnson) from North-eastern NSW.

Brunonia ◽  
1987 ◽  
Vol 10 (2) ◽  
pp. 201
Author(s):  
DJ Boland ◽  
DA Kleinig ◽  
JJ Brophy
Keyword(s):  
New Species ◽  
New South ◽  
Conservation Status ◽  
North Coast ◽  
Volatile Oils ◽  
The North ◽  
South Wales ◽  
North Eastern ◽  
A New Species

A new species, Eucalyptus fusiformis Boland et Kleinig, from the north coast of New South Wales is described. Its taxonomic position is in E. subgenus Symphyomyrtus series Paniculatae following the informal classification of eucalypts proposed by Pryor and Johnson (1971). E. fusiformis is characterised by its flowers, fruits and adult leaves. In the bud the staminal filaments are fully inflected while the androecium has outer staminodes and the anthers are cuboid and adnate. The fruits are narrow, often truncate fusiform, tapering into long slender pedicels. The adult leaves are dull grey, concolorous and hypoamphistomatic. The species resembles the more numerous and often co-occurring ironbark E. siderophloia which has similar adult and seedling leaves. The volatile oils of both species are very similar. The ecology, distribution, taxonomic affinities and conservation status are discussed.

scholarly journals Morphological and molecular characterization of a new species of Atlantic stalked barnacle (Scalpelliformes: Pollicipedidae) from the Cape Verde Islands

2011 ◽  
Vol 91 (7) ◽  
pp. 1537-1545 ◽  
Author(s):  
Javier Quinteiro ◽  
Jorge Rodríguez-Castro ◽  
Pedro López ◽  
Luis F. López-Jurado ◽  
Nieves González-Henríquez ◽  
...  
Keyword(s):  
New Species ◽  
Charles Darwin ◽  
Taxonomic Status ◽  
Molecular Data ◽  
Cape Verde ◽  
Eastern Pacific ◽  
Cape Verde Islands ◽  
The North ◽  
North Eastern ◽  
Central Eastern

The taxonomy of pedunculate cirripedes belonging to the genus Pollicipes has essentially remained unchanged since Charles Darwin described them in his exhaustive work on the Cirripedia. This genus includes three species of stalked barnacles: Pollicipes pollicipes in the north-eastern Atlantic, P. polymerus in the north-eastern Pacific and P. elegans in the central-eastern Pacific. However, a population genetics analysis of P. pollicipes suggested the presence of a putative cryptic species collected from the Cape Verde Islands in the central-eastern Atlantic. This study examines the morphology of these genetically divergent specimens and compares them with that of representative Atlantic samples of the biogeographically closely related P. pollicipes and with the poorly described P. elegans. Molecular data, including mitochondrial COX1 and nuclear ribosomal interspaces sequences, were obtained for all species of the genus Pollicipes. Morphological distinctiveness, diagnostic characters, congruent divergence level and monophyletic clustering, at both nuclear and mitochondrial loci support the taxonomic status of this new species, Pollicipes darwini.

scholarly journals Setaphyes elenae sp. nov., a new species of mud dragon (Kinorhyncha: Allomalorhagida) from Skagerrak (north-eastern Atlantic Ocean)

2020 ◽  
Author(s):  
Diego Cepeda ◽  
Alberto González-Casarrubios ◽  
Nuria Sánchez ◽  
Fernando Pardos
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
The North ◽  
Eastern Atlantic Ocean ◽  
North Eastern ◽  
Males And Females ◽  
Established Genus ◽  
A New Species

Meiofauna sampling in the proximity of Syd-Hällsö Island (Strömstad, Sweden) revealed a new species of Kinorhyncha from the Skagerrak. The species, Setaphyes elenae sp. nov., is distinguished from its congeners by the arrangement of the middorsal cuticular specializations (it has shortened, distally rounded middorsal processes on segments 1 and 9 and middorsal elevations throughout segments 2–8), as well as by the presence of paired laterodorsal setae on segments 3, 5, 7 and 9 and ventromedial setae on segments 3, 5 and 7 in both males and females. The finding of a new species from the north-eastern Atlantic Ocean, provides new valuable information for the recently established genus in the Allomalorhagida.

scholarly journals Description of a new species Gyraulus (Pulmonata: Planorbidae) from the land thermal spring Khakusy of Lake Baikal

ZooKeys ◽  
2018 ◽  
Vol 762 ◽  
pp. 1-12 ◽  
Author(s):  
Tatiana Sitnikova ◽  
Tatiana Peretolchina
Keyword(s):  
New Species ◽  
Lake Baikal ◽  
Thermal Spring ◽  
Morphological Characters ◽  
Shell Size ◽  
The North ◽  
The Family ◽  
North Eastern ◽  
Small Shell ◽  
A New Species

A new species of the family Planorbidae is described from the land thermal spring Khakusy, on the north-eastern shore of Lake Baikal. The description of Gyraulustakhteevi sp. n. includes morphological characters and gene sequences (COI of mtDNA) for the species separation from sister taxon Gyraulusacronicus (A. Férussac, 1807) collected from the small Krestovka River in-flowing into the south-western part of the Lake. The new species differs from G.acronicus in small shell size of adults, having smaller number of prostate folds (maximal up to 26 in G.takhteevi n. sp. vs. 40 in G.acronicus), a short preputium (approximately twice shorter than the phallotheca), and an elongated bursa copulatrix. The population of Gyraulustakhteevi sp. n. consists of two co-existent morphs: one of them has a narrow shell spire and the second is characterized by wide spire similar to the shell of G.acronicus. One of the two revealed haplotypes of the new species includes both morphs, while the second consists of snails with wide spired shells.

ASTERACEAE

Bothalia ◽  
1989 ◽  
Vol 19 (1) ◽  
pp. 27-31 ◽  
Author(s):  
F. Brusse
Keyword(s):  
New Species ◽  
The North ◽  
North Eastern ◽  
A New Species

A NEW SPECIES OF INEZIA (ANTHEMIDEAE) FROM THE NORTH-EASTERN TRANSVAAL

A new genus and a new species of Tropidopolinae (Orthoptera: Acrididae) from India

ENTOMON ◽  
2019 ◽  
Vol 44 (3) ◽  
pp. 191-196
Author(s):  
Mohd. Imran Khan ◽  
Mohd. Kamil Usmani
Keyword(s):  
New Species ◽  
New Genus ◽  
Species Level ◽  
Female Genitalia ◽  
Eastern Region ◽  
New Genus And Species ◽  
Male And Female ◽  
The North ◽  
North Eastern ◽  
A New Species

A new genus Neooxyrrhepes gen. n. with a new species Neooxyrrhepes meghalayensis n. from Meghalaya, a state of the North Eastern region of India. Description and illustrations of the new genus and species are given. A key to the genera of subfamily Tropidopolinae from North Eastern states of India is also provided. Additonally the characters of male and female genitalia at generic and species level are also given.

New species of the genus Isorropodon (Bivalvia: Vesicomyidae: Pliocardiinae) from cold methane seeps at Nyegga (Norwegian Sea, Vøring Plateau, Storrega Slide)

2011 ◽  
Vol 91 (5) ◽  
pp. 1135-1144 ◽  
Author(s):  
E.M. Krylova ◽  
A.V. Gebruk ◽  
D.A. Portnova ◽  
C. Todt ◽  
H. Haflidason
Keyword(s):  
New Species ◽  
Continental Margin ◽  
Shell Morphology ◽  
Methane Seep ◽  
Methane Seeps ◽  
Norwegian Sea ◽  
The North ◽  
The Family ◽  
North Eastern ◽  
A New Species

A new species of vesicomyid bivalve (Isorropodon nyeggaensis sp. nov.) is described based on shell morphology, from the Nyegga cold methane seep area on the Norwegian continental margin. This is the first description of vesicomyids from the Norwegian Sea and the northernmost record of recent representatives of the family Vesicomyidae. A dispersion of the genus into the Norwegian Sea basin from the north-eastern Atlantic is suggested. A brief description of other macrofauna from methane seep sites at Nyegga is also given.

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