scholarly journals Taxonomic revision of the endemic Cameroonian freshwater crab genus Louisea Cumberlidge, 1994 (Crustacea, Decapoda, Brachyura, Potamonautidae), with descriptions of two new species from Nkongsamba and Yabassi

ZooKeys ◽  
2019 ◽  
Vol 881 ◽  
pp. 135-164 ◽  
Author(s):  
Pierre A. Mvogo Ndongo ◽  
Thomas von Rintelen ◽  
Neil Cumberlidge
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Genetic Data ◽  
12S Rrna ◽  
Freshwater Crab ◽  
Diagnostic Features ◽  
Two New Species ◽  
Montane Zone ◽  
Wetland Complex

The taxonomy of the freshwater crab genus Louisea Cumberlidge, 1994, is reviewed based on type material and newly obtained specimens from three different localities in southwestern Cameroon. The genus is endemic to Cameroon and previously included two species: L. edeaensis (Bott, 1969) (type species) from Lake Ossa wetland complex (altitudes below 400 m asl) and L. balssi (Bott, 1959) from Kumba and Mt. Manengouba (altitudes above 1300 m asl). Here two new species of Louisea are described based on morphological and/or genetic data: L. nkongsambasp. nov. from the Nlonako Ecological Reserve (1000–1400 m asl) in the sub-montane zone and L. yabassisp. nov. from Yabassi in the lowlands. A redescription and amended diagnostic features of L. edeaensis and L. balssi are provided, and the genus diagnosis is updated to accommodate all four species. An identification key is also provided for the species of Louisea. A tree of phylogenetic relationships based on three mtDNA loci (COI, 12S rRNA, and 16S rRNA) supports the taxonomic revision, and indicates speciation of Louisea species along an altitudinal gradient, but further phylogenetic analyses are needed to understand whether this can lend support to the hypothesis that there is a montane centre of speciation along the Cameroon Volcanic Line. The phylogenetic tree also shows that Buea Cumberlidge, Mvogo Ndongo, Clark & Daniels, 2019 and Potamonemus Cumberlidge & Clark, 1992 are sister genera that may be derived from the Louisea lineage.

Two new species of the genus Chironephthya (Octocorallia, Alcyonacea, Nidaliidae, Siphonogorgiinae) from the Gulf of Thailand

Zootaxa ◽  
2020 ◽  
Vol 4780 (2) ◽  
pp. 324-340
Author(s):  
YUKIMITSU IMAHARA ◽  
SUCHANA CHAVANICH ◽  
VORANOP VIYAKARN ◽  
YUKA KUSHIDA ◽  
JAMES D. REIMER ◽  
...  
Keyword(s):  
New Species ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Gulf Of Thailand ◽  
Rdna Sequences ◽  
Two New Species ◽  
28S Rdna Sequences ◽  
The Gulf Of Thailand ◽  
Multiple Stems

Two new species of the genus Chironephthya, C. sirindhornae sp. nov. and C. cornigera sp. nov., are described based on three specimens collected from the Gulf of Thailand. Both species are well distinguished from the previously described species of the genus Chironephthya by their colonies consisting of multiple stems that stand upright from a common base, and by a significantly thinner canal wall without large spindles. As a result of phylogenetic analyses using COI, mtMutS, and 28S rDNA sequences of these two species, these three specimens constituted an independent small clade within a large mixed clade of Siphonogorgia and Chironephthya, with the two species slightly different from each other. The discrepancy in the morphology suggested the erection of a new genus to accommodate these species, however, as the subclade was included in a large mixed clade of Siphonogorgia and Chironephthya, we place these species within genus Chironephthya. Our results further highlight the continuing confusion between Siphonogorgia and Chironephthya, and demonstrate the need for taxonomic revision of these genera. 

scholarly journals Phylogenetics of the freshwater crab (Potamonautes MacLeay, 1838) fauna from ‘sky islands’ in Mozambique with the description of a new species (Brachyura: Potamoidea: Potamonautidae)

2020 ◽  
Author(s):  
Savel R. Daniels ◽  
Gabriela B. Bittencourt-Silva ◽  
Vanessa Muianga ◽  
Julian Bayliss
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Divergence Time ◽  
12S Rrna ◽  
Sky Islands ◽  
Freshwater Crab ◽  
Crab Species ◽  
African Species ◽  
Island Species ◽  
Sky Island

Patterns and processes of cladogenesis among taxa living on the Mozambique ‘sky islands’ remain poorly studied. During the present study, we report on a new freshwater crab species from Mount Lico, an inselberg and ‘sky island’ in the Zambezia Province of Mozambique. Phylogenetic analyses using three mitochondrial DNA sequence loci (12S rRNA, 16S rRNA and COI) were used to determine the evolutionary placement of the freshwater crab specimens from Mount Lico. The freshwater crab specimens from Mount Lico were retrieved sister to Potamonautes choloensis. The new species, Potamonautes licoensis sp. nov., is described and compared with other southern African freshwater crab species. Divergence time estimations for the Mozambican freshwater crab species suggest a Miocene / Plio–Pleistocene diversification. Some endemic ‘sky island’ species form an early branching and are sister to other predominantly East African species, while other ‘sky island’ species are more recently derived and nested within a predominantly southern African clade. The present study presents the description of the fourth endemic freshwater crab species from Mozambique and suggests that the species diversity in the country is likely highly underrepresented, reiterating the call for renewed systematic surveys. An argument for the conservation of these mountainous ‘sky islands’ is presented.

scholarly journals Two new enchytraeid species from Jeju Island, Korea (Annelida, Clitellata)

ZooKeys ◽  
2019 ◽  
Vol 824 ◽  
pp. 87-108
Author(s):  
Klára Dózsa-Farkas ◽  
Tamás Felföldi ◽  
Hajnalka Nagy ◽  
Yong Hong
Keyword(s):  
New Species ◽  
Body Wall ◽  
Phylogenetic Analyses ◽  
Reproductive Organs ◽  
Jeju Island ◽  
Diagnostic Features ◽  
Two New Species ◽  
The Status ◽  
Molecular Phylogenetic ◽  
Strong Body

The enchytraeid fauna of three areas in Jeju Island (Korea) was studied, and comparative morphological and molecular taxonomic examinations (based on CO1, ITS and H3 sequences) were performed on nine samples collected in 2016. Twenty-two enchytraeid species were recorded and identified. The descriptions of two new species (Achaetamultisacculatasp. n.andFridericiafloriformissp. n.) are presented in this paper. The main diagnostic features ofA.multisacculatasp. n.are: three pairs of pyriform glands per segment, clitellum with two “baguette-like” packages of glands, dorsal blood vessel from VII, secondary pharyngeal glands absent, oesophageal appendages well developed, two pairs of preclitellar nephridia, the reproductive organs (except the spermathecae in V) shifted one segment forward. The main features ofF.floriformissp. n.are that they are large worms, have up to 2–4 chaetae in bundles, strong body wall, thick cuticle, five pairs of preclitellar nephridia, c-type coelomo-mucocytes sometimes with some refractile vesicles, chylus cells in XII–XV, sperm funnels approximately twice as long than wide, spermathecae with long ectal duct without glands, ampullae surrounded distally by about 9–12 sessile diverticula of varying size. Molecular phylogenetic analyses supported the morphological results and confirmed the status of the two new species.

scholarly journals Molecular phylogenetic analysis of a taxonomically unstable ranid from Sumatra, Indonesia, reveals a new genus with gastromyzophorous tadpoles and two new species

2018 ◽  
Vol 94 (1) ◽  
pp. 163-193 ◽  
Author(s):  
Umilaela Arifin ◽  
Utpal Smart ◽  
Stefan T. Hertwig ◽  
Eric N. Smith ◽  
Djoko T. Iskandar ◽  
...  
Keyword(s):  
New Species ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
12S Rrna ◽  
Molecular Evidence ◽  
Molecular Barcoding ◽  
Wide Range ◽  
Two New Species

The presence of an adhesive abdominal sucker (gastromyzophory) allows tadpoles of certain species of anurans to live in fast-flowing streams. Gastromyzophorous tadpoles are rare among anurans, known only in certain American bufonids and Asian ranids. To date,Huia sumatrana, which inhabits cascading streams, has been the only Sumatran ranid known to possess gastromyzophorous tadpoles. In the absence of thorough sampling and molecular barcoding of adults and larvae, it has remained to be confirmed whether other Sumatran ranid species living in similar habitats, i.e.,Chalcorana crassiovis, possesses this larval type. Moreover, the taxonomic status of this species has long been uncertain and its taxonomic position within the Ranidae, previously based exclusively on morphological characters, has remained unresolved. To study the diversity and relationships of these frogs and to establish the identity of newly collected gastromyzophorous tadpoles from Sumatra, we compared genetic sequences ofC. crassiovis-like taxa from a wide range of sites on Sumatra. We conducted bayesian and maximum likelihood phylogenetic analyses on a concatenated dataset of mitochondrial (12S rRNA, 16S rRNA, and tRNAval) and nuclear (RAG1 and TYR) gene fragments. Our analyses recoveredC. crassiovisto be related toClinotarsus,Huia, andMeristogenys. The DNA barcodes of the gastromyzophorous tadpoles matched adults from the same sites. Herein, we provide a re-description of adultC. crassiovisand propose “C. kampeni” as a synonym of this species. The molecular evidence, morphological features, and distribution suggest the presence of two related new species. The two new species andC. crassiovistogether represent a distinct phylogenetic clade possessing unique molecular and morphological synapomorphies, thus warranting a new genus.

Molecular phylogeny and classification of Chelidurella Verhoeff, stat. restit. (Dermaptera: Forficulidae)

2020 ◽  
pp. 1-37
Author(s):  
Markéta Kirstová ◽  
Robin Kundrata ◽  
Petr Kočárek
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Phylogeny ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Two New Species ◽  
Molecular Phylogenetic

Abstract We present herein the first phylogenetic analysis of the genus Chelidura and the taxonomic revision of the genus Chelidurella, stat. restit., based on DNA sequences. The results confirm the generic status of Chelidurella Verhoeff, 1902 and Mesochelidura Verhoeff, 1902, and they are removed from the synonymy with Chelidura and reinstated as valid genera. Many individual Chelidurella species are defined based on the combination of a few variable characters on the pygidium and forceps, and the systematics and phylogeny of this genus are unclear. The validity of most of the species is revisited here by molecular phylogenetic analyses, and individual morphological characters are evaluated for their relevance in the identification of all described species. We describe two new species to science, Chelidurella galvagnii Kirstová & Kočárek, sp. nov. from Austria, and C. pseudovignai Kočárek & Kirstová, sp. nov. from Italy and Austria; two species, C. guentheri Galvagni, 1994 and C. tatrica Chládek, 2017 are newly synonymized. Critical diagnostic characters are illustrated, and an identification key for males of Chelidurella is provided.

scholarly journals A taxonomic revision of Geschollia (Asparagaceae, Urgineeae)—from a monotypic genus towards its diversification, including the description of five new species

Phytotaxa ◽  
2019 ◽  
Vol 427 (2) ◽  
pp. 85-114
Author(s):  
MARIO MARTÍNEZ-AZORÍN ◽  
ANTHONY P. DOLD ◽  
MANUEL B. CRESPO ◽  
MICHAEL PINTER ◽  
MARÍA ÁNGELES ALONSO-VARGAS ◽  
...  
Keyword(s):  
New Species ◽  
New Taxa ◽  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Genetic Data ◽  
Monophyletic Group ◽  
New Combinations ◽  
Monotypic Genus ◽  
Morphological Studies

In the frame of a taxonomic revision of Hyacinthaceae subfamily Urgineoideae (Asparagaceae tribe Urgineeae) combining morphological and genetic data from numerous samples across its whole range of distribution, we here present a taxonomic revision of Geschollia, a genus originally accepted as monotypic to include G. anomala. This genus was characterized by the single, synanthous, terete leaf; long racemose inflorescence; tepals connate for ca. 1 mm and reflexed at anthesis; spreading to patent stamens; and small polygonal seeds. Our morphological studies in combination with phylogenetic analyses evidence that Geschollia is indeed a strongly supported monophyletic group, which includes eight species matching most of the features cited above. In this context, we here describe five new species in this genus and accordingly expand the original characterization of Geschollia to accommodate these new taxa. Furthermore, two new combinations are presented for previously described species. An identification key is provided for all accepted species in the genus.

Two new species of Hemiphyllodactylus Bleeker (Squamata: Gekkonidae) from Thailand

Zootaxa ◽  
2018 ◽  
Vol 4369 (3) ◽  
pp. 363 ◽  
Author(s):  
APISAK SUKPRASERT ◽  
SURAPOP SUTTHIWISES ◽  
VIRAYUTH LAUHACHINDA ◽  
WUT TAKSINTUM
Keyword(s):  
New Species ◽  
Morphological Study ◽  
Molecular Phylogenetics ◽  
Phylogenetic Analyses ◽  
Genetic Data ◽  
Morphological Characters ◽  
Chiang Mai ◽  
Two New Species ◽  
Integrated Taxonomy ◽  
Two Populations

We investigate the taxonomy of slender geckos (Hemiphyllodactylus) in Thailand by means of molecular phylogenetics and morphological study using specimens from three provinces; Chiang Mai, Kamphaeng Phet, and Chanthaburi. The results of phylogenetic analyses had shown that the genetic data of populations from 2 provinces were distinctly different from known species. In addition, some morphological characters of these two populations such as lamellar formula on fore- and hindfoot differed from the other species. The integrated taxonomy using molecular phylogenetics and morphological study revealed two new species, Hemiphyllodactylus khlonglanensis sp. nov. from western Thailand, and Hemiphyllodactylus flaviventris sp. nov. from eastern Thailand as described herein.  

Palaeontology, taxonomic revision and variability of some species of the genus Gassendiceras Bert et al., 2006 (Ammonitina, Upper Barremian) from southeastern Franc

2013 ◽  
Vol 63 (3) ◽  
pp. 355-429 ◽  
Author(s):  
Didier Bert ◽  
Stéphane Bersac ◽  
Gérard Delanoy ◽  
Léon Canut
Keyword(s):  
New Species ◽  
Intraspecific Variability ◽  
Taxonomic Revision ◽  
Two New Species

Abstract Bed-by-bed sampling of twelve Barremian sections in southeastern France from pelagic basin (Vocontian Basin) to neritic platforms (Arc of Castellane, Arc of Nice and Provencal Domain) has enabled the collection of isochronous samples of the ammonite genus Gassendiceras. Three poorly known species of the Toxancyloceras vandenheckei Zone (Upper Barremian) are revised: G. alpinum, G. multicostatum and G. hoheneggeri; two new species are described (G. rebouleti nov. sp. and G. bosellii nov. sp.). The intraspecific variability of particular species was recognised. This variability is between slender peramorphic and robust paedomorphic extreme morphologies, with the presence of all intermediates.

Two new species of the genus Broscosoma Rosenhauer, 1846 (Coleoptera, Carabidae, Broscinae) from China

Zootaxa ◽  
2020 ◽  
Vol 4821 (1) ◽  
pp. 173-180
Author(s):  
RI-XIN JIANG ◽  
QI FENG ◽  
SHUO WANG
Keyword(s):  
New Species ◽  
Fujian Province ◽  
Diagnostic Features ◽  
Chongqing City ◽  
Two New Species

Two new species of the genus Broscosoma Rosenhauer, 1846 (Carabidae: Broscinae) were found in China: Broscosoma xuhaoi sp. nov. from Chongqing City and Broscosoma zhengyuandongi sp. nov. from Fujian Province. Habitus and diagnostic features of the new species are described and illustrated. An updated list of all known Chinese Broscosoma species is given.

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