scholarly journals Reassessment of the taxonomic status of Cyperaceae on Rapa Iti, Austral Islands, French Polynesia, with a new combination, Morelotia involuta

Telopea ◽  
2021 ◽  
Vol 24 ◽  
pp. 171-187
Author(s):  
Russell Barrett ◽  
Keyword(s):  
Environmental Conditions ◽  
Taxonomic Status ◽  
French Polynesia ◽  
New Combination ◽  
Morphological Examination ◽  
Vascular Flora ◽  
Austral Islands ◽  
High Diversity

We reassess the current taxonomic status and distribution of Cyperaceae on Rapa Iti, Austral Islands, French Polynesia. This includes the poorly known Machaerina involuta H.St John (Cyperaceae, tribe Schoeneae), 86 years after it was first collected. Detailed morphological examination revealed that M. involuta belongs in Morelotia Gaudich., and the new combination, Morelotia involuta (H.St John) J.J.Bruhl & R.L.Barrett, is made here. Nineteen species of Cyperaceae are reported for Rapa Iti (10% of the vascular flora). The high diversity of Cyperaceae invites further discussion of the biogeographic connections and environmental conditions of Rapa Iti and a summary is provided. Notes on additional Cyperaceae named from Rapa Iti (Carex rapaensis (H.St John) K.L.Wilson, Carex stokesii F.Br., C. stokesii var. aristata F.Br., Cyperus rapensis F.Br., Eleocharis caribaea var. stokesii F.Br., Gahnia stokesii F.Br. and Rhynchospora stokesii F.Br.) are presented and a presently unidentified Carex is noted.

scholarly journals ORBITOLINA DAVIESI HOFKER, 1966: A FORGOTTEN ORBITOLINIDAE FROM THE THANETIAN OF PAKISTAN AND ITS TAXONOMIC STATUS

2020 ◽  
pp. 41-48
Author(s):  
FELIX SCHLAGINTWEIT
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
New Genus ◽  
Taxonomic Status ◽  
Original Description ◽  
Junior Synonym ◽  
New Combination ◽  
Linear Arrangement ◽  
Radial Zone

Orbitolina daviesi Hofker, 1966 (family Orbitolinidae) was validly described and thoroughly illustrated from Thanetian limestones of Pakistan. Although its attribution to the genus Orbitolina d’Orbigny and any phylogenetic relationships with the Cretaceous taxa have been refuted shortly afterwards, the species has not been taxonomically revised since then. Karsella hottingeri Sirel, 1999 was established as new genus and new species from the Thanetian of Turkey, without taking into account J. Hofker’s publication. The original description and genus diagnosis of Karsella has meanwhile been emended to include the occurrence of a radial zone with septula that follow a zig-zag pattern and associated linear arrangement of the foramina, as well as a complex embryo. Orbitolina daviesi clearly displays these features and is here considered a species of the genus Karsella Sirel. Karsella hottingeri is regarded as a subjective junior synonym of O. daviesi Hofker and therefore, the only species of the genus is given as a new combination: Karsella daviesi (Hofker). From a suprageneric viewpoint, the two Paleogene genera Karsella Sirel and Cushmania Silvestri display a complex embryo and might belong to a new subfamily of the Orbitolinidae, phylogenetically different and unrelated to the lower-mid Cretaceous Orbitolininae.

scholarly journals A revision of the genus Psammogorgia Verrill, 1868 (Cnidaria, Anthozoa, Octocorallia) in the tropical eastern Pacific Ocean

ZooKeys ◽  
2020 ◽  
Vol 961 ◽  
pp. 1-30
Author(s):  
Odalisca Breedy ◽  
Hector M. Guzman
Keyword(s):  
Taxonomic Status ◽  
Taxonomic Revision ◽  
Eastern Pacific ◽  
New Combination ◽  
Valid Species ◽  
Shallow Waters ◽  
Eastern Pacific Ocean ◽  
Tropical Eastern Pacific ◽  
Character Tables ◽  
Two New Species

The species of the genus Psammogorgia Verrill, 1868 from the shallow waters of the tropical eastern Pacific were mainly described from 1846 to 1870. Very few contributions were published subsequently. Recently, the genus was revisited with the addition of two new species. However, a comprehensive generic study is still missing for the eastern Pacific. Psammogorgia is characterised by having axes cores without mineralisation, mainly coarse irregular spindles and thorny, leafy or tuberculate clubs coenenchymal sclerites and the anthocodial armature with distinct collaret and points arrangements. Herein a taxonomic revision of the genus is presented based on type material which was morphologically analysed and illustrated using optical and scanning electron microscopy. Comparative character tables are provided for comparison among species in the genus, along with a taxonomic key. Moreover, the taxonomic status of each species was analysed. The genus Psammogorgia comprises six valid species and two varieties, and three lectotypes and a new combination are proposed to establish the taxonomic status of these species.

Revised taxonomic status of Scythia Kiritchenko, 1938 and Mohelnia Šulc, 1941 (Hemiptera: Coccomorpha: Coccidae: Eriopeltinae)

Zootaxa ◽  
2021 ◽  
Vol 4985 (4) ◽  
Author(s):  
LIJIE CHEN ◽  
JICHUN XING
Keyword(s):  
Type Species ◽  
Taxonomic Status ◽  
Scale Insect ◽  
Junior Synonym ◽  
New Combination ◽  
Soft Scale ◽  
Subjective Synonym

The soft scale insect genus Scythia (Hemiptera: Coccomorpha: Coccidae) was established by Kiritchenko (1938) with the type species Scythia craniumequinum Kiritchenko, 1938 from Ukraine. Later, Borchsenius (1957) placed Mohelnia Šulc, 1941 (type species: Mohelnia festuceti Šulc, 1941) as a junior subjective synonym of Scythia Kiritchenko, 1938, and proposed new combination: Scythia festuceti (Šulc, 1941). Ben-Dov (1993) followed Borchsenius (1957) in treating Mohelnia as a junior synonym of Scythia.

scholarly journals The eye-catching cicada Hamza ciliaris (Linnaeus, 1758) comb. n. in Indonesia and the Pacific: taxonomic status, synonymy, and distribution (Homoptera, Cicadoidea)

1991 ◽  
Vol 61 (2) ◽  
pp. 119-130 ◽  
Author(s):  
J.P. Duffels
Keyword(s):  
Taxonomic Status ◽  
The Philippines ◽  
New Combination ◽  
The Pacific ◽  
Caroline Islands

The new combination Hamza ciliaris (Linnaeus) is proposed for a cicada species widely distributed in Maluku ( = Moluccas), Timor, Banda, Kei and Banggai Islands, the Philippines, and the Palau group of the Caroline Islands.

scholarly journals Pleistocene Branchiopods (Cladocera, Anostraca) from Transbaikalian Siberia Demonstrate Morphological and Ecological Stasis

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3063
Author(s):  
Anton A. Zharov ◽  
Anna N. Neretina ◽  
D. Christopher Rogers ◽  
Svetlana A. Reshetova ◽  
Sofia M. Sinitsa ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Seasonal Variations ◽  
Environmental Changes ◽  
Daphnia Pulex ◽  
Steppe Zone ◽  
Water Bodies ◽  
Large Branchiopods ◽  
Community Types ◽  
High Diversity

Pleistocene water bodies have been studied using the paleolimnological approach, which traces environmental changes using particular subfossils as ecological proxies, rather than analysis of the paleocommunities themselves. Within a given taphocoenosis, the presence and quantity of animals are related to environmental conditions rather than to community types where relationships between taxa are stabilized during their long-term co-occurrence and are (at least partially) more important than the particular environmental conditions at the time of deposition, which may have experienced significant seasonal and inter-seasonal variations. Here, we analyze Branchiopoda (Crustacea) of two paleolocalities in the Transbaikalian Region of Russia: Urtuy (MIS3) and Nozhiy (older than 1.5 million years). Cladocerans Daphnia (Ctenodaphnia) magna, D. (C.) similis, D. (Daphnia) pulex, Ceriodaphnia pulchella-reticulata, C. laticaudata, Simocephalus sp., Moina cf. brachiata, M. macropopa clade, Chydorus cf. sphaericus, Capmtocercus sp. and anostracans Branchinecta cf. paludosa, and Streptocephalus (Streptocephalus) sp. are found in two localities. With the exception of the last taxon, which now occurs in the southern Holarctic, all other taxa inhabit the Transbaikalian Region. Within Eurasia, the steppe zone has the greatest diversity of large branchiopods and a high diversity of some cladocerans, such as subgenus Daphnia (Ctenodaphnia) and Moina sp. Here we demonstrated that the branchiopod community in shallow steppe water bodies has been unchanged since at least the Pleistocene, demonstrating long-term morphological and ecological stasis.

A molecular phylogeny of the “Madascincus polleni species complex”, with description of a new species of scincid lizard from the coastal dune area of northern Madagascar

Zootaxa ◽  
2011 ◽  
Vol 2876 (1) ◽  
pp. 1 ◽  
Author(s):  
AURÉLIEN MIRALLES ◽  
JÖRN KÖHLER ◽  
FRANK GLAW ◽  
MIGUEL VENCES
Keyword(s):  
Dna Sequences ◽  
Species Complex ◽  
Nuclear Dna ◽  
Taxonomic Status ◽  
Nominal Species ◽  
Morphological Examination ◽  
Closely Related Species ◽  
A New Species ◽  
Evolutionary Lineages ◽  
Dune Area

The present paper constitutes a study on a taxonomically confusing group of closely related species belonging to the Malagasy skink genus Madascincus, currently encompassing the nominal species M. polleni, M. intermedius and M. stumpffi. Based on combined analyses of mitochondrial and nuclear DNA sequences (ND1 and RAG2 genes, respectively), and morphological examination, we provide evidence for the existence of at least four distinct evolutionary lineages within this complex: Madascincus stumpffi; Madascincus arenicola sp. nov. from northern Madagascar; and two cryptic species morphologically similar to the name-bearing types of M. polleni and M. intermedius. The two latter species, although genetically distinct, appear to be morphologically indistinguishable and their taxonomic status cannot be resolved until a better sampling will be available.

The status of Hormathophylla baetica: a new combination and lectotypification in Hormathophylla cochleata

Phytotaxa ◽  
2016 ◽  
Vol 280 (1) ◽  
pp. 45 ◽  
Author(s):  
ESTEBAN SALMERÓN-SÁNCHEZ ◽  
JAVIER FUERTES AGUILAR ◽  
STANISLAV ŠPANIEL ◽  
ANTONIO JESÚS MENDOZA-FERNÁNDEZ ◽  
FABIÁN MARTÍNEZ-HERNÁNDEZ ◽  
...  
Keyword(s):  
Phylogenetic Relationships ◽  
Taxonomic Status ◽  
Ongoing Study ◽  
New Combination ◽  
The Status ◽  
The Subject

The taxonomic status of Hormathophylla baetica and its phylogenetic relationships to other Hormatophylla species are the subject of controversy. As part of an ongoing study on the genus Hormathophylla, we find that molecular, morphological and biogeographical evidence supports the placement of H. baetica as a subspecies of H. cochleata. We also discuss and designate a lectotype for H. cochleata.

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