scholarly journals Three new species of Cymbella (Bacillariophyta) from high altitude lakes, China

2013 ◽  
Vol 72 (2) ◽  
pp. 359-374 ◽  
Author(s):  
Zhujun Hu ◽  
Yanling Li ◽  
Ditmar Metzeltin

Abstract - This paper describes three new Cymbella species from high altitude lakes of Hengduan Mountains region, southwest China. Cymbella heihainensis Li et Gong nov. spec. is similar to C. modicepunctata Krammer, C. asiatica Metzeltin, Lange-Bertalot et Li, Y., but differs from them in valve size, stigmata, raphe ending and also striae number. Cymbella shudunensis Li et Metzeltin nov. spec. is related to C. terrafuegiana, but differs in wider valve size, larger central area and coarser puncta. C. shudunensis differs from C. proxima Reimer in Patrick et Reimer group in reverse lateral raphes at the proximal endings, and distinguished from C.cistula (Ehrenberg) O.Kirchner group in the absent central area on dorsal side. Cymbella xingyunnensis Li and Gong sp. nov. resembles the group around C. proxima, and the most similar taxon is C. sinensis Metzeltn et Krammer, which can be distinguished by its lack of stigmata.

Phytotaxa ◽  
2020 ◽  
Vol 449 (1) ◽  
pp. 83-89
Author(s):  
HAN WU ◽  
TENG-ZHONG ZHANG ◽  
YAN-LING LI ◽  
DITMAR METZELTIN ◽  
HORST LANGE-BERTALOT ◽  
...  

A second species of the genus Sichuaniella Yan L. Li, Lange-Bertalot & Metzeltin 2013 from China is described as new to science. The new species, S. dequinensis spec. nov., is documented with light and scanning electron microscopy. This new species is distinguished from the only other species of the genus, S. lacustris, by having a higher density of more strongly radiate alveoli between broader interstriae, and a broader axial area. The new species is known only from a small lake in the Hengduan Mountains region of southwest China.


2021 ◽  
Vol 80 (2) ◽  
pp. 184-190
Author(s):  
Qi Liu ◽  
Han Wu ◽  
Yan-Ling Li ◽  
John Patrick Kociolek

This paper describes a new species of the genus Cymbella C.A. Agardh from an alpine lake in the Hengduan Mountains of southwestern China. A detailed morphological description of the new species, named Cymbella luoyulanae sp. nov., is presented; the description is based on light and scanning electron microscopy. The main features of C. luoyulanae are strongly dorsiventral valves with strongly reverse-lateral raphe branches near the proximal ends, a large central area occupying approximately a half of the width with the valve and slit-like areolae comprising striae that may be unseriate or partially biseriate. The new species has morphological characteristics that resemble those of C. heihainensis Y.Li et Gong, C. modicepunctata Krammer and C. asiatica Metzeltin, Lange-Bertalot et Y.Li, but it differs from these three species in details of size, valve shape, striae density, central area, and number of stigmata.


Zootaxa ◽  
2021 ◽  
Vol 4981 (2) ◽  
pp. 275-300
Author(s):  
BORIS SIRENKO

The genus chiton Loricella is revised. It comprises nine species. Two of these species, L. neoguinensis n. sp. and L. solomonensis n. sp., are described as new. Based on the analysis of morphological features studied using a scanning electron microscope, a revised diagnosis of the genus is provided. The characters diagnostic for this that distinguish it from the related genus Squamophora are as follows: a tubular hollow inside the dorsal scales, bristles on the dorsal side of the girdle, a wide ventral mouth region, a narrow mantle fold covered with simple longitudinally ribbed scales, smooth ventral scales, pits arranged in longitudinal rows in the central area of the tegmentum, and a bicuspid head of the major lateral teeth of the radula. 


2018 ◽  
Vol 17 (7) ◽  
pp. 781-790 ◽  
Author(s):  
Haixia Shi ◽  
Xinyu Wang ◽  
Yuanfei Zhou ◽  
Dong Liu ◽  
Yanyun Zhang ◽  
...  

Zootaxa ◽  
2012 ◽  
Vol 3179 (1) ◽  
pp. 39 ◽  
Author(s):  
GIOVANNI PILATO ◽  
YEVGEN KIOSYA ◽  
OSCAR LISI ◽  
GIORGIO SABELLA

The list of tardigrade species recorded from Belarus is provided; nine were new records for this geographic area and three,Macrobiotus sottilei sp. nov., Paramacrobiotus klymenki sp. nov. and Hypsibius valentinae sp. nov. were new to science.Macrobiotus sottilei sp. nov. had smooth cuticle; eye spots present; the dorsal transverse ridges of the buccal armaturejoined to form a continuous arc; pharyngeal bulb with two macroplacoids and microplacoid; eggs with processes in shapeof inverted goblets with indented distal discs; egg shell with a very dense reticular design.Paramacrobiotus klymenki sp. nov. had smooth cuticle; eye spots absent; buccal armature similar to that of P. areolatus;buccal tube not very wide; stylet supports inserted on the buccal tube at about 80% of its length; pharyngeal bulb withthree macroplacoids; microplacoid absent; eggs with conical processes with a reticular design similar to that of P. areola-tus; egg shell areolated; central area of each areola slightly thickened but not subdivided.Hypsibius valentinae sp. nov. had smooth cuticle; eye spots present; buccal tube very narrow; pharyngeal bulb with twomacroplacoids and a small septulum, claws of the Hypsibius type; small, smooth, flexible lunules present; a short cuticular bar is present between the bases of the claws of the hind legs; no cuticular bar on the first three pairs of legs.


Phytotaxa ◽  
2017 ◽  
Vol 321 (2) ◽  
pp. 201 ◽  
Author(s):  
DI WANG ◽  
WANG-QIU DENG ◽  
XIAO-LAN HE ◽  
WEI-HONG PENG ◽  
BING-CHENG GAN

Clitopilus fusiformis, a new species in section Clitopilus, is described from high altitude areas in southwest China. Its detailed description and comparison with other similar members are presented. This new taxon is further confirmed by molecular evidence, and its phylogenetic affinities are discussed based on ITS and RPB2 sequences.


Zootaxa ◽  
2008 ◽  
Vol 1701 (1) ◽  
pp. 40
Author(s):  
FRANK H. HENNEMANN ◽  
OSKAR V. CONLE ◽  
WEIWEI ZHANG ◽  
YE LIU

The genus Parastheneboea Redtenbacher, 1908 is recorded for the first time from the Yunnan Province and Chongqing municipality, China. Two new species are described and illustrated: P. foliculata n. sp. from Yunnan based on the female and eggs, and P. simianshanensis n. sp. from Chongqing based on the male alone. The systematics of Parastheneboea Brunner v. Wattenwyl are briefly discussed with a list of species provided. Andropromachus Carl, 1913 is represented in China by only one species, A. guangxiense (Chen & He, 2000). The genus is briefly discussed and shown to be closely related to Neohirasea Rehn, 1904. An English translation of the original Chinese description of A. guangxiense (Chen & He) is provided. A re-description, a brief review, comments and a key to the species of Pericentrus Redtenbacher, 1908 are provided. The genus is shown to belong in the subfamily Lonchodinae Brunner v. Wattenwyl, 1893 and to be related to Menexenus Stål, 1875. Pericentrus appendiculatus Redtenbacher, 1908 is transferred to the genus Trychopeplus Shelford, 1919 (n. comb.) and the type-locality “Central-Java” shown to be wrong. Pericentrus Redtenbacher has so far not been recorded from China but is very likely to be present in South Xizang (= Tibet). The new genus Cnipsomorpha n. gen. is described for three highly mountainous species from Yunnan Province, Cnipsus apteris Liu & Cai, 1992, Cnipsus colorantis Chen & He, 1996 and Cnipsomorpha erinacea n. sp., of which the latter is designated as the type-species. All three species are only known from the females. The egg of C. erinacea n. sp. is the only one known from the genus and briefly described and illustrated. The new genus is related to Parapachymorpha Brunner v. Wattenwyl, 1893, and hence provisionally attributed to Phasmatidae: Pachymorphinae: Gratidiini. A key is provided to distinguish between the species of Cnipsomorpha n. gen.. English translations of the original Chinese descriptions of Cnipsus apteris Liu & Cai, 1992 and Cnipsus colorantis Chen & He, 1996 are presented. Type-specimens of new taxa are deposited in IZCAS, INCA and the collections of the authors.


2008 ◽  
Vol 42 (1) ◽  
pp. 193-205 ◽  
Author(s):  
Huiluo Cao ◽  
Tong Li ◽  
Wen Xia Zhang ◽  
Hong Wei Chen

Phytotaxa ◽  
2021 ◽  
Vol 528 (1) ◽  
pp. 52-58
Author(s):  
CHANGYING XIA ◽  
XIAOZHONG LAN ◽  
YOUWEI ZUO ◽  
LE LIN ◽  
HONGPING DENG

The Hengduan Mountains, as one important biodiversity hotspots in the world, is notable for its high habitat heterogeneity and extreme plant diversity which including many endemics species. Incarvillea uniflora, a new species is described from Hengduan Mountains. The new species is similar to I. himalayensis in having red corolla, stemless, solitary flower, capsule 4-angled and winged seeds, but differs by the characters of stable simple leaves, long triangular calyx lobes and solitary or clustered flowers. It is considered to be Data Deficient (DD) due to the lack of further field investigation.


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