scholarly journals Revision of the horseface loaches (Cobitidae, Acantopsis), with descriptions of three new species from Southeast Asia

Zootaxa ◽  
2017 ◽  
Vol 4341 (2) ◽  
pp. 151
Author(s):  
DAVID A. BOYD ◽  
PATCHARA NITHIROJPAKDEE ◽  
GRIDSADA DEEIN ◽  
CHAVALIT VIDTHAYANON ◽  
CHAIWUT GRUDPAN ◽  
...  

Acantopsis (Cobitidae) is revised based on analysis of morphological and molecular data. Four of the six available names, A. dialuzona, A. spectabilis, A. octoactinotos, and A. thiemmedhi, are valid, and three new species, A. rungthipae, A. dinema, and A. ioa, are described. All species are described morphologically, distributions are mapped, and relationships are discussed for those for which molecular data (CO1, RAG1) are available. Labial barbels, color pattern, and meristic counts are the most diagnostic features. Although the long snout of Acantopsis is perhaps the most emblematic attribute of the genus, its relative length increases with growth, reducing its taxonomic value. Species can be difficult to identify on the basis of color pattern alone, as habitat and preservation methods appear to strongly influence the color pattern. Despite interspecific overlap of some highly variable traits, each species has a unique set of morphological characteristics that remain observable even when the color pattern is obscured, and some species are restricted to single drainages, greatly simplifying identification. The phylogenetic analyses revealed high molecular divergence between even the most morphologically similar species, with mean uncorrected CO1 p-distances between species ranging from 12.1-15.4%. Species of Acantopsis exhibit significant genetic structuring consistent with recognized freshwater ecoregions. Acanthopsis lachnostoma Rutter 1897, from Swatow, China, is not assignable to Acantopsis. 

Diversity ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 37
Author(s):  
Haixia Ma ◽  
Zikun Song ◽  
Xiaoyan Pan ◽  
Yu Li ◽  
Zhanen Yang ◽  
...  

The Hypoxylon species play an important ecological role in tropical rainforest as wood-decomposers, and some might have benefical effects on their hosts as endophytes. The present work concerns a survey of the genus Hypoxylon from Hainan Tropical Rainforest National Park of China. Four new species: H. wuzhishanense, H. hainanense, H.chrysalidosporum, and H.cyclobalanopsidis, were discovered based on a combination of morphological characteristics and molecular data. Hypoxylon wuzhishanense is characterized by Rust pulvinate stromata, amyloid apical apparatus and brown ascospores, with most of the perispore being indehiscent in 10% KOH. Hypoxylon hainanense has effused–pulvinate and Violet stromata, amyloid apical apparatus, light-brown to brown ascospores with straight germ slit and dehiscent perispore. Hypoxylonchrysalidosporum is distinguished by glomerate to pulvinate stromata, highly reduced or absent inamyloid apical apparatus, and light-brown to brown ascospores with very conspicuous coil-like ornamentation. Hypoxyloncyclobalanopsidis has Livid Purple pulvinate stromata, highly reduced amyloid apical apparatus, faint bluing, brown ascospores and dehiscent perispore, and it grows on dead branches of Cyclobalanopsis. Detailed descriptions, illustrations, and contrasts with morphologically similar species are provided. Phylogenetic analyses inferred from ITS, RPB2, LSU, and β-tubulin sequences confirmed that the four new species are distinct within the genus Hypoxylon.


MycoKeys ◽  
2020 ◽  
Vol 71 ◽  
pp. 1-22
Author(s):  
Arifah Nur Aini ◽  
Suchada Mongkolsamrit ◽  
Wijanarka Wijanarka ◽  
Donnaya Thanakitpipattana ◽  
J. Jennifer Luangsa-ard ◽  
...  

Akanthomyces is a genus of invertebrate-pathogenic fungi from the family Cordycipitaceae (Ascomycota, Hypocreales). Its species occurs on two different types of hosts, spiders and insects, and in the latter case specifically Lepidoptera adults. Three new species of Akanthomyces, A. noctuidarum, A. pyralidarum, and A. tortricidarum occurring on adult moths from Thailand are proposed based on the differences of their morphological characteristics and molecular data. Phylogenetic analyses using a combined dataset, including the internal transcribed spacer regions, the large subunit of the ribosomal DNA, translation elongation factor 1-α, the largest subunit of RNA polymerase II, and the second largest subunit of RNA polymerase II, support the delimitation of these new species in Akanthomyces.


Zootaxa ◽  
2012 ◽  
Vol 3458 (1) ◽  
pp. 120 ◽  
Author(s):  
RATMANEE CHANABUN ◽  
CHIRASAK SUTCHARIT ◽  
PIYOROS TONGKERD ◽  
SHAU-HWAI AILEEN TAN ◽  
SOMSAK PANHA

Three new species of semi-aquatic freshwater earthworms of the genus Glyphidrilus Horst, 1889 are described from Malaysia.Glyphidrilus bisegmentus sp. n. was collected from Air Banun Pandig, Perak, Glyphidrilus kotatinggi sp. n. from Kota Tinggiwaterfall, Johor, and Glyphidrilus peninsularis sp. n. from Sungei Bantang, Johor. For comparison, type and non-type materialof five morphologically similar species was reinvestigated. The descriptions of the new species include illustrations of the external and internal morphological characteristics.


Forests ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1531
Author(s):  
Xu Lu ◽  
Haisheng Yuan

Species in the genus Tomentella are distributed throughout the temperate and tropical regions worldwide, but few studies associated with the taxonomy and phylogeny of this genus had been reported from Northwest China. In this paper, molecular phylogenetic analyses of the nuclear ribosomal ITS (internal transcribed spacer: ITS1-5.8S-ITS2) and LSU (large subunit: 28S) sequences combined with morphological characteristics identified three new species from Xinjiang Autonomous Region in Northwest China, which were named T. aurantispora, T. kanasensis, and T. schrenkiana. Similar macromorphological and anatomical characteristics are shared by these new species: arachnoid basidiocarps; byssoid sterile margins; utriform basidia with a clamp connection at the base; the absence of rhizomorphs and cystidia; and slightly thick-walled, subglobose to globose basidiospores. Among these new species, the color of the hymenophoral surface, the size of the basidiospores, and some other features can be used for species delimitation. The new species and closely related species in the phylogenetic tree were discussed, and a key to the identified species of Tomentella from China was provided.


Phytotaxa ◽  
2021 ◽  
Vol 500 (1) ◽  
pp. 1-10
Author(s):  
MENG-LE XIE ◽  
TIE-ZHENG WEI ◽  
BÁLINT DIMA ◽  
YONG-PING FU ◽  
RUI-QING JI ◽  
...  

This study presents one telamonioid species new to science based on morphological characteristics and molecular phylogenetic analyses. Cortinarius khinganensis was collected from the Greater Khingan Mountains, Northeast China and it is characterized by hygrophanous, vivid brownish red and striate pileus, white universal veil, and subglobose spores. According to phylogenetic analyses results, C. khinganensis belongs to the section Illumini, which is a lineage distantly related from subgenus Telamonia sensu stricto. Detailed descriptions of the new species and the comparisons with morphologically similar species are provided. The phylogenetic relationships within the section Illumini are also discussed.


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 ◽  
...  

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. 


Zootaxa ◽  
2018 ◽  
Vol 4496 (1) ◽  
pp. 269 ◽  
Author(s):  
JI-BAO JIANG ◽  
YAN DONG ◽  
ZHU YUAN ◽  
JIANG-PING QIU

Three new species of the genus Amynthas are described from Guangxi Province, China. They are named A. dissimilis sp. nov., A. anteporus sp. nov. and A. marsupiformis sp. nov. All of them have two pairs of spermathecal pores in 6/7–7/8, and belong to the tokioensis-group. Their morphological characteristics are compared to similar species in tokioensis-group from China and other Asian countries. In addition, the mitochondrial COI and 12S-tRNA-Val-16S sequence of three new species were determined, then pairwise distances between species were calculated. Both morphological and molecular evidences could easily distinguish the new species from earthworms previously reported in the tokioensis-group. 


Phytotaxa ◽  
2019 ◽  
Vol 404 (3) ◽  
pp. 91
Author(s):  
JIE CHEN ◽  
PHILIPPE CALLAC ◽  
RÉGULO CARLOS LLARENA-HERNÁNDEZ ◽  
GERARDO GERARDO MATA

Agaricus is a species-rich genus with more than 500 species over the world. Recent studies on tropical Agaricus revealed new tropical clades and a revised taxonomic system was consequently developed. Agaricus subg. Minoriopsis, a sixth subgenus was recently added, comprising species exclusively from the Americas. The diversity of Agaricus is little studied in Mexico, despite this country has a long history in the consumption of wild edible fungi. In this paper, we introduce a new species A. guzmanii and a new record for A. globocystidiatus from Mexico based on morphological characteristics and molecular data. Phylogenetic analyses indicate that they belong to A. subg. Minoriopsis.


Phytotaxa ◽  
2014 ◽  
Vol 184 (2) ◽  
pp. 61 ◽  
Author(s):  
Chih-Chieh Yu ◽  
Kuo-Fang Chung

Berberis sect. Wallichianae are species of evergreen shrubs that in Taiwan are found in subalpine and montane-temperate areas and which have a notoriously controversial taxonomic history. Based on multivariate statistical analyses of morphometric data and an explicitly stated species criterion, the taxonomy of the group in Taiwan and its close relative in Luzon (B. barandana) is revised and their endemicity is evaluated by molecular data. In addition to the six species recognized in the Flora of Taiwan, 2nd ed. (i.e., B. aristatoserrulata, B. brevisepala, B. chingshuiensis, B. kawakamii, B. mingetsensis, and B. tarokoensis), B. hayatana (synonymized under B. mingetsensis) and B. nantoensis (synonymized under B. brevisepala) are reinstated, and three new species (B. pengii, B. ravenii, and B. schaaliae) are described and illustrated. Phylogenetic analyses using three chloroplast DNA sequence regions (rbcL, ycf6-psbM, and psbA-trnH) place all Taiwanese species and B. barandana in a strongly supported clade derived from within the continental Asian species of sect. Wallichianae, indicating their independent evolutionary history and supporting their endemic status.


ZooKeys ◽  
2019 ◽  
Vol 884 ◽  
pp. 23-42
Author(s):  
Yan Dong ◽  
Michelle Man Suet Law ◽  
JiBao Jiang ◽  
JiangPing Qiu

Three new species and one subspecies of the genus Amynthas are described from Guangxi Zhuang Autonomous Region, China: The new species are: Amynthas maximus Qiu & Dong, sp. nov. and Amynthas tortuosus Qiu & Dong, sp. nov., and Amynthas shengtangmontis Dong & Jiang, sp. nov., the subspecies is Amynthas shengtangmontis minusculussubsp. nov. All have four pairs of spermathecal pores in 5/6–8/9, which indicates that they should belong to the corticis-group. Their morphological characteristics are compared to other similar species in the corticis-group from China and other Asian countries, such as Amynthas pulvinus Sun & Jiang, 2013, Amynthas homosetus (Chen, 1938), Amynthas corticis (Kinberg, 1867), Amynthas dorsualis Sun & Qiu, 2013, and Amynthas carnosus (Goto & Hatai, 1899). In addition, the results presented are confirmed by the pairwise comparison of COI barcode sequences. The pairwise distances between each new species and the other eighteen corticis-group species are greater than 14.7% on average. Furthermore, the pairwise distance between A. shengtangmontis shengtangmontis and A. shengtangmontis minusculus is 10.7–11.4%.


Sign in / Sign up

Export Citation Format

Share Document