scholarly journals Reassessment and systematic position of the sinistral snails of genus Hemiplecta from Thailand (Eupulmonata: Ariophantidae), with description of two new species

2020 ◽  
pp. 1-33
Author(s):  
Chirasak Sutcharit ◽  
Ekgachai Jeratthitikul ◽  
Piyoros Tongkerd ◽  
Somsak Panha
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Comparative Morphology ◽  
Systematic Position ◽  
Reproductive Organ ◽  
Peninsular Malaysia ◽  
Land Snails ◽  
The Family ◽  
Two New Species ◽  
Molecular Phylogenetic

Indochina land snails of the family Ariophantidae are in need of thorough systematic revision. Here we comprehensively revise the systematics of the large-shelled, sinistral (counterclockwise) coiling snails from Thailand and Peninsular Malaysia. Molecular phylogeny based on mitochondrial (coi and 16S) and nuclear (28S) gene sequences demonstrates that these sinistral snails are not members of Dyakiidae as previously thought, but instead are more closely related to the genus Hemiplecta in the family Ariophantidae. Comparative morphology also reveals similarity of reproductive organ features (globular gametolytic organ, well-developed dart apparatus, and lack of amatorial organ complex). Based on this evidence, we propose to transfer these sinistral snails to the genus Hemiplecta. Molecular phylogenetic analyses further strongly support the monophyly of this sinistral lineage with respect to other members of Hemiplecta. This monophyletic clade consists of five members including three species that were previously classified as “Dyakia”, H. lahatensis, H. retrorsa and H. salangana, and two new species described herein, H. ligorica n. sp. and H. thailandica n. sp. This study also suggests that the anatomy of the gametolytic organ in the genus Hemiplecta corresponds well with the phylogenetic relationships and appears to be a taxonomically informative character, while the penial verge has little utility for generic recognition.

scholarly journals Stolonifera from shallow waters in the north-western Pacific: a description of a new genus and two new species within the Arulidae (Anthozoa, Octocorallia)

ZooKeys ◽  
2018 ◽  
Vol 790 ◽  
pp. 1-19 ◽  
Author(s):  
Yee Wah Lau ◽  
Frank Robert Stokvis ◽  
Leendert Pieter van Ofwegen ◽  
James Davis Reimer
Keyword(s):  
New Species ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Shallow Waters ◽  
The North ◽  
The Family ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
Dongsha Atoll ◽  
North Western

A new genus and two new species of stoloniferous octocorals (Alcyonacea) within the family Arulidae are described based on specimens collected from Okinawa (Japan), Palau and Dongsha Atoll (Taiwan).Hanagen. n. is erected within Arulidae.Hanahanagasasp. n.is characterised by large spindle-like table-radiates andHanahanatabasp. n.is characterised by having ornamented rods. The distinction of these new taxa is also supported by molecular phylogenetic analyses. The support values resulting from maximum likelihood and Bayesian inference analyses for the genusHanaand new speciesH.hanagasaandH.hanatabaare 82/1.0, 97/1.0 and 61/0.98, respectively.Hanahanagasasp. n.andHanahanatabasp. n.are the first arulid records for Okinawa, Palau, and Dongsha Atoll, and represent species of the second genus within the family Arulidae.

scholarly journals Notes on Trochila (Ascomycota, Leotiomycetes), with new species and combinations

MycoKeys ◽  
2021 ◽  
Vol 78 ◽  
pp. 21-47
Author(s):  
Paula Andrea Gómez-Zapata ◽  
Danny Haelewaters ◽  
Luis Quijada ◽  
Donald H. Pfister ◽  
M. Catherine Aime
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Rust Fungus ◽  
Plant Host ◽  
New Host ◽  
The Family ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
Recreation Area ◽  
Plant Families

Studies of Trochila (Leotiomycetes, Helotiales, Cenangiaceae) are scarce. Here, we describe two new species based on molecular phylogenetic data and morphology. Trochila bostonensis was collected at the Boston Harbor Islands National Recreation Area, Massachusetts. It was found on the stem of Asclepias syriaca, representing the first report of any Trochila species from a plant host in the family Apocynaceae. Trochila urediniophila is associated with the uredinia of the rust fungus Cerotelium fici. It was discovered during a survey for rust hyperparasites conducted at the Arthur Fungarium, in a single sample from 1912 collected in Trinidad. Macro- and micromorphological descriptions, illustrations, and molecular phylogenetic analyses are presented. The two new species are placed in Trochila with high support in both our six-locus (SSU, ITS, LSU, rpb1, rpb2, tef1) and two-locus (ITS, LSU) phylogenetic reconstructions. In addition, two species are combined in Trochila: Trochila colensoi (formerly placed in Pseudopeziza) and T. xishuangbanna (originally described as the only species in Calycellinopsis). This study reveals new host plant families, a new ecological strategy, and a new country record for the genus Trochila. Finally, our work emphasizes the importance of specimens deposited in biological collections such as fungaria.

scholarly journals Molecular phylogeny of the family Cosmocercidae (Nematoda: Ascaridida), with description of a new species of Aplectana using an integrative approach

2021 ◽  
Author(s):  
Hui-Xia Chen ◽  
Xiao-Hong Gu ◽  
Xue-Feng Ni ◽  
Liang Li
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Ribosomal Dna ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Systematic Position ◽  
Integrative Approach ◽  
The Family ◽  
Molecular Phylogenetic ◽  
A New Species

Abstract Background Nematodes of the family Cosmocercidae (Ascaridida: Cosmocercoidea) are mainly parasitic in the digest tract of various amphibians and reptiles worldwide. However, our knowledge of the molecular phylogeny of the Cosmocercidae is still far from comprehensive. The phylogenetic relationships of the Cosmocercidae and the other two families Atractidae and Kathlaniidae in the superfamily Cosmocercoidea, are still under debate. Moreover, the systematic position of some genera in Cosmocercidae remains unclear. Methods Nematodes collected from Polypedates megacephalus (Hallowell) (Anura: Rhacophoridae) were identified using morphological methods (light and scanning electron microscopy) and molecular approaches [sequencing and analyzing the small ribosomal DNA (18S), internal transcribed spacer 1 (ITS-1), large ribosomal DNA (28S) and mitochondrial cytochrome c oxidase subunit 1 (cox1) target regions]. Phylogenetic analyses of cosmocercoid nematodes using 18S + 28S sequence data were performed to clarify the phylogenetic relationships of the Cosmocercidae, Atractidae and Kathlaniidae in the Cosmocercoidea, and the systematic position of the genus Aplectana in Cosmocercidae. Results Morphological and genetic evidence supported that the nematode specimens collected from P. megacephalus represents a new species of Aplectana (Cosmocercoidea: Cosmocercidae). Our phylogenetic results revealed that the Cosmocercidae is a monophyletic group, but not the basal group in Cosmocercoidea as the traditional classification. The Kathlaniidae is a paraphyletic group, and the subfamily Cruziinae (including only the genus Cruzia) formed a sister relationship to the Cosmocercidae. Phylogenetic analyses also showed that the genus Aplectana has closer relationship to the genus Cosmocerca in the Cosmocercidae. Conclusions Our molecular phylogenetic results supported that the subfamily Cruziinae should be moved out from the hitherto-defined family Kathlaniidae and elevated to a separate family, and the genus Cosmocerca has closer relationship to the genus Aplectana in the family Cosmocercidae, Our present study provided the basic molecular phylogenetic framework for the superfamily Cosmocercoidea based on 18S + 28S sequence data for the first time. Moreover, a new species of Aplectana, A. xishuangbannaensis n. sp., was described using an integrative approach.

scholarly journals Descriptions of four new dextral land snails of the genus Camaena (Gastropoda, Eupulmonata, Camaenidae) from south China

ZooKeys ◽  
2020 ◽  
Vol 996 ◽  
pp. 37-58
Author(s):  
Pei Wang ◽  
Mei-Ling Hu ◽  
Jun-Hong Lin ◽  
Hai-Fang Yang ◽  
Xiao-Jing Li ◽  
...  
Keyword(s):  
New Species ◽  
South China ◽  
Dna Sequences ◽  
Reproductive System ◽  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Land Snails ◽  
Shell Morphology ◽  
Molecular Phylogenetic ◽  
Living Environments

In this study, four new dextral camaenid from China are reported, based on shell morphology, reproductive system anatomy, and molecular phylogenetic analyses: Camaena funingensis Zhou, Wang & Lin, sp. nov., Camaena gaolongensis Zhou, Wang & Lin, sp. nov., Camaena maguanensis Zhou, Wang & Hu, sp. nov., and Camaena yulinensis Zhou, Wang & Hu, sp. nov. Detailed descriptions of the morphological characteristics including shells and genitalia, DNA sequences, and living environments of the four new species are provided, with further comparisons with congeners.

scholarly journals New species in Dictyosporium, new combinations in Dictyocheirospora and an updated backbone tree for Dictyosporiaceae

MycoKeys ◽  
2018 ◽  
Vol 36 ◽  
pp. 83-105 ◽  
Author(s):  
Jing Yang ◽  
Jian-Kui Liu ◽  
Kevin D. Hyde ◽  
E.B. Gareth Jones ◽  
Zuo-Yi Liu
Keyword(s):  
New Species ◽  
New Taxa ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Freshwater Fungi ◽  
New Combinations ◽  
The Family ◽  
Two New Species ◽  
Backbone Tree

A survey of freshwater fungi on submerged wood in China and Thailand resulted in the collection of three species in Dictyocheirospora and four species in Dictyosporium including two new species in the latter genus. Morphological characters and phylogenetic analyses based on ITS, LSU and TEF1α sequence data support their placement in Dictyocheirospora and Dictyosporium (Dothideomycetes). An updated backbone tree is provided for the family Dothideomycetes. Descriptions and illustrations of the new taxa and re-collections are provided. Four new combinations are proposed for Dictyocheirospora.

Integrative taxonomy of the Asian skinks Sphenomorphus stellatus (Boulenger, 1900) and S. praesignis (Boulenger, 1900) with the resurrection of S. annamiticus (Boettger, 1901) and the description of a new species from Cambodia

Zootaxa ◽  
2019 ◽  
Vol 4683 (3) ◽  
pp. 381-411 ◽  
Author(s):  
L. LEE GRISMER ◽  
PERRY L., JR. WOOD ◽  
EVAN S. H. QUAH ◽  
SHAHRUL ANUAR ◽  
NIKOLAY A. POYARKOV ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Color Pattern ◽  
Integrative Taxonomy ◽  
Peninsular Malaysia ◽  
Wildlife Sanctuary ◽  
Molecular Phylogenetic ◽  
Univariate Analyses ◽  
A New Species

Molecular phylogenetic analyses of the sister species Sphenomorphus stellatus and S. praesignis based on the mitochondrial genes 12S and 16S rRNA recover the former as paraphyletic with respect to the latter in that a specimen of S. stellatus from the type locality in Peninsular Malaysia is more closely related to S. praesignis than to Indochinese populations of S. stellatus. Furthermore, the phylogeny indicates that the Indochinese populations represent two species, thus resulting in four major lineages within this clade. These relationships are consistent with multivariate and univariate analyses of morphological and discrete color pattern data which statistically define and diagnose the four lineages and together with the molecular data, provide the foundation for robust, testable, species-level hypotheses. As such, S. stellatus is herein restricted to Peninsular Malaysia; S. annamiticus is resurrected for the circum-continental populations ranging through southeastern Thailand, southern Cambodia, and southern Vietnam; a new species—S. preylangensis sp. nov.—is described from an isolated mountain, Phnom Chi, from the Prey Lang Wildlife Sanctuary in central Cambodia; and the taxonomy of S. praesignis remains unchanged. The description of S. preylangensis sp. nov. underscores the necessity to conserve this remnant of lowland evergreen rainforest in the Prey Lang Wildlife Sanctuary. 

On Two New Species of Freshwater Crabs of the Genera Sayamia and Heterothelphusa (Brachyura, Parathelphusidae) From Southern Thailand

Crustaceana ◽  
1997 ◽  
Vol 70 (6) ◽  
pp. 710-719 ◽  
Author(s):  
Peter K.L. Ng
Keyword(s):  
New Species ◽  
Peninsular Malaysia ◽  
Freshwater Crabs ◽  
The Family ◽  
Southern Thailand ◽  
Two New Species

AbstractTwo new species of freshwater crabs of the family Parathelphusidae are described from southern Thailand. Sayamia melanodactylus sp. nov. is one of the smallest members of the genus known, and seems to be most closely related to S. sexpunctata, but differing in carapace and male gonopod characters as well as in the colour of the fingers of its minor chelae (black against brown). Heterothelphusa fatum sp. nov. is related to H. insolita from nearby northeastern Peninsular Malaysia, but has a distinctly more swollen carapace, proportionately more slender ambulatory legs and a very differently structured major male chela.

Two new species of the Phimochirus holthuisi complex from the Gulf of Mexico, supported by morphology, color, and genetics (Crustacea: Anomura: Paguridae)

Zootaxa ◽  
2019 ◽  
Vol 4683 (4) ◽  
pp. 531-551
Author(s):  
DARRYL L. FELDER ◽  
RAFAEL LEMAITRE ◽  
CATHERINE CRAIG
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Continental Shelf ◽  
Gene Sequence ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
The Other ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
Gene Sequence Data

Coloration, gene-sequence data (H3, 12s, 16s), and subtle features in morphology support the description of two new species, both formerly regarded to represent accepted variants of Phimochirus holthuisi s.l. While color in life consistently separates these species from P. holthuisi s.s. and from each other, morphological distinctions are subtle and less than absolute in small specimens, being based on ventral spine counts of walking leg dactyls and relative development of the superior crest on the major chela. Molecular phylogenetic analyses clearly support the separation of sister clades, representing two new species, from P. holthuisi s.s. as well as other congeners available for analysis. Both of the new species are presently known to occur widely throughout the northern Gulf of Mexico, though one occurs more commonly in the northeastern and southeastern Gulf, and may range as far south as Suriname. The other has been taken primarily in the northwestern Gulf, and is not known from outside Gulf waters. While both of the new species appear restricted to relatively deep subtidal waters of the continental shelf, Phimochirus holthuisi s.s. is instead more commonly found in shallow nearshore tropical waters on or near coral reefs. Previous literature reports of P. holthuisi usually represent, at least in part, one or both of these two new species. 

Two new Pythium species from southern China based on morphological and molecular characters

Phytotaxa ◽  
2020 ◽  
Vol 432 (3) ◽  
pp. 263-273
Author(s):  
JIA-JIA CHEN ◽  
HUI FENG ◽  
WEI SONG ◽  
XIAO-BO ZHENG
Keyword(s):  
New Species ◽  
Ribosomal Rna ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Pythium Species ◽  
Internal Transcribed Spacer Region ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
I Gene ◽  
Molecular Characters

Two new species of Pythium, namely P. subinflatum and P. xuzhouense, from soybean (Glycine max) in southern China are described based on their morphology and molecular phylogenetic analyses inferred from the internal transcribed spacer region of the ribosomal RNA gene and mitochondrial cytochrome c oxidase subunit I gene. Pythium subinflatum is characterized by globose to sub-globose or ovoid hyphal swellings, filamentous inflated sporangia, smooth oogonia, mostly diclinous antheridia, elongated along the oogonial stalk, subcircular, subglobose or fist-shaped antheridial cells, and aplerotic and slightly thick-walled oospores (2–3.5 µm); P. xuzhouense differs from other species in the genus by filamentous or lobulated sporangia, smooth oogonia, mostly diclinous, sometimes monoclinous antheridia, subclavate, falcate or semicircle to subcircular antheridial cells, and plerotic or nearly plerotic and thin-walled oospores (0.5–1.5 µm). In addition, the two new species are compared to closely related Pythium species regarding their phylogenetic positions and morphological features.

Morphological and molecular analyses reveal two new species of Guepinia from China

Phytotaxa ◽  
2020 ◽  
Vol 475 (2) ◽  
pp. 91-101
Author(s):  
YANG SHEN ◽  
LI FAN
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Northern China ◽  
Molecular Analyses ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
Reddish Orange

Guepinia alba sp. nov. and G. shanxiense sp. nov. are described and illustrated from Northern China in this paper. Morphologically, G. alba is distinguished from other Guepinia species by whitish basidiomata and 4-spored basidia while G. shanxiense is diagnosed by reddish orange basidiomata and ellipsoid to oblong ellipsoid basidiospores. Molecular phylogenetic analyses based on ITS and nrLSU sequences support the establishment of the two new species.

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