scholarly journals Two new species of Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from the tropical monsoon forest in southern China

ZooKeys ◽  
2021 ◽  
Vol 1059 ◽  
pp. 89-116
Author(s):  
Lei Wang ◽  
Jin-zi Chen ◽  
Zi-mei Dong ◽  
Guang-wen Chen ◽  
Ronald Sluys ◽  
...  
Keyword(s):  
New Species ◽  
Seminal Vesicle ◽  
Southern China ◽  
Ejaculatory Duct ◽  
Chromosome Complement ◽  
Monsoon Forest ◽  
Two New Species ◽  
Lateral Portion ◽  
Tropical Monsoon ◽  
Tropical Monsoon Forest

Two new species of the genus Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from the tropical monsoon forest in southern China are described on the basis of an integrative taxonomic study involving morphology, karyology, histology, and molecular analyses. The new species Dugesia circumcisa Chen & Dong, sp. nov. is characterised by asymmetrical openings of the oviducts; right vas deferens opening at anterior portion of the seminal vesicle and the left one opening at mid-lateral portion of the seminal vesicle; two diaphragms in ejaculatory duct, the latter being ventrally displaced and opening at the tip of the penis papilla, which is provided with a nozzle; wide duct connecting male atrium and common atrium; chromosome complement triploid with 24 metacentric chromosomes. The other new species, Dugesia verrucula Chen & Dong, sp. nov., is characterised by the large size of the living worm, usually exceeding 3.5 cm in length; asymmetrical openings of the oviducts; subterminal opening of ventrally displaced ejaculatory duct; vasa deferentia symmetrically opening into the postero-lateral portion of the seminal vesicle; well-developed duct between the seminal vesicle and diaphragm; single dorsal bump near the root of the penis papilla; bursal canal with pleated wall and spacious posterior section; unstalked cocoons; chromosome complement diploid with 16 metacentric chromosomes. Inter-specific molecular distances and their positions in the phylogenetic tree reveal that D. circumcisa and D. verrucula are clearly separated from their congeners.

scholarly journals Integrative descriptions of two new species of Dugesia from Hainan Island, China (Platyhelminthes, Tricladida, Dugesiidae)

ZooKeys ◽  
2021 ◽  
Vol 1028 ◽  
pp. 1-28
Author(s):  
Lei Wang ◽  
Zi-mei Dong ◽  
Guang-wen Chen ◽  
Ronald Sluys ◽  
De-zeng Liu
Keyword(s):  
New Species ◽  
Seminal Vesicle ◽  
Natural Habitat ◽  
Ejaculatory Duct ◽  
Chromosome Complement ◽  
Hainan Island ◽  
Open Communication ◽  
Separate Species ◽  
Two New Species ◽  
Dorsal Portion

Two new species of the genus Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from Hainan Island of China are described on the basis of morphological, karyological and molecular data. Dugesia semiglobosa Chen & Dong, sp. nov. is mainly characterized by a hemispherical, asymmetrical penis papilla with ventrally displaced ejaculatory duct opening terminally at tip of penis papilla; vasa deferentia separately opening into mid-dorsal portion of intrabulbar seminal vesicle; two diaphragms in the ejaculatory duct; copulatory bursa formed by expansion of bursal canal, lined with complex stratified epithelium, which projects through opening in bursa towards intestine, without having open communication with the gut; mixoploid chromosome complement diploid (2n = 16) and triploid (3n = 24), with metacentric chromosomes. Dugesia majuscula Chen & Dong, sp. nov. is mainly characterized by oviducts opening asymmetrically into female reproductive system; hyperplasic ovaries; expanded posterior section of bursal canal; vasa deferentia separately opening into mid-dorsal portion of seminal vesicle; asymmetrical penis papilla due to ventral course of ejaculatory duct, which has subterminal and dorsal opening at tip papilla; mixoploid chromosome complement diploid (2n = 16) and triploid (3n = 24); chromosomes metacentric. Apart from their anatomy, separate species status of the two new species is supported also by their genetic distances and by their positions in the phylogenetic tree. The sexualization process may have been induced by the lower temperatures, in comparison with their natural habitat, under which the worms were cultured in the laboratory.

scholarly journals Two new species of Russula subsect. Virescentinae from southern China

2021 ◽  
Vol 20 (8) ◽  
pp. 993-1005
Author(s):  
Bin Chen ◽  
Jie Song ◽  
Junfeng Liang ◽  
Yangkun Li
Keyword(s):  
New Species ◽  
Southern China ◽  
Two New Species

Two new species of the Rhopalopsole magnicerca group (Plecoptera: Leuctridae) from China

Zootaxa ◽  
2018 ◽  
Vol 4388 (3) ◽  
pp. 444
Author(s):  
RAORAO MO ◽  
GUOQUAN WANG ◽  
DING YANG ◽  
WEIHAI LI
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Southern China ◽  
Southwestern China ◽  
Autonomous Region ◽  
Two New Species

Two leuctrid species of the Rhopalopsole magnicerca group are described as new, R. brevicula sp. nov. and R. jizushana sp. nov. from the Guangxi Autonomous Region of southern China, bordering Vietnam and Yunnan Province of southwestern China, respectively. The new species are compared with related taxa. 

Two new species of the genus Cobitis Linnaeus (Teleostei: Cobitidae) from southern China

2015 ◽  
Vol 34 (3) ◽  
pp. 517-525 ◽  
Author(s):  
Yongxia Chen ◽  
Xiaoyun Sui ◽  
Na Liang ◽  
Yifeng Chen
Keyword(s):  
New Species ◽  
Southern China ◽  
Two New Species

Two new species of the genus Flavoperla (Plecoptera: Perlidae) from Guangxi, China

Zootaxa ◽  
2021 ◽  
Vol 5032 (2) ◽  
pp. 247-261
Author(s):  
RAORAO MO ◽  
JINJUN CAO ◽  
GUOQUAN WANG ◽  
WEIHAI LI ◽  
DÁVID MURÁNYI
Keyword(s):  
New Species ◽  
Dna Sequence ◽  
Southern China ◽  
Morphological Characters ◽  
Sequence Comparisons ◽  
Autonomous Region ◽  
Guangxi Zhuang Autonomous Region ◽  
Taxonomic Relationships ◽  
Two New Species

Two new species, Flavoperla retusata Mo, Li & Wang, sp. nov. and F. yangi Mo, Li & Murányi, sp. nov. are proposed from the Guangxi Zhuang Autonomous Region of southern China. Distinctness of the new species is based on morphological characters and DNA sequence comparisons with their closest known relative, F. galerispina Mo, Wang & Li, 2020. The taxonomic relationships of the two new species and related congeners are discussed.  

Properties of the Yeast Communities Associated with Termites of a Tropical Monsoon Forest: Cat Tien National Park, Vietnam

Microbiology ◽  
2021 ◽  
Vol 90 (4) ◽  
pp. 489-499
Author(s):  
A. I. Zueva ◽  
A. V. Kachalkin ◽  
I. A. Maksimova ◽  
Nguyen Van Thinh ◽  
A. V. Tiunov
Keyword(s):  
National Park ◽  
Monsoon Forest ◽  
Tropical Monsoon ◽  
Cat Tien National Park ◽  
Tropical Monsoon Forest

Xylodon bambusinus and X. xinpingensis spp. nov. (Hymenochaetales) from southern China

Phytotaxa ◽  
2021 ◽  
Vol 511 (3) ◽  
Author(s):  
XIANG MA ◽  
CHANG-LIN ZHAO
Keyword(s):  
New Species ◽  
Bayesian Inference ◽  
Maximum Likelihood ◽  
Growth Habit ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Two New Species ◽  
Thin Walled ◽  
Inference Methods

Two new species, Xylodon bambusinus and X. xinpingensis, are proposed based on morphological and molecular evidences. Both species share the annual growth habit, resupinate basidiomata and monomitic hyphal system with clamped, colorless generative hyphae, smooth, thin-walled basidiospores, but X. bambusinus is characterized by the smooth to tuberculate hymenial surface, presence of capitate and fusiform cystidia, broad ellipsoid basidiospores, while X. xinpingensis by the reticulate hymenophore with cream hymenial surface, and subglobose basidiospores (4.5–6 × 3.5–5 µm). Sequences of ITS and LSU nrRNA gene regions of the studied samples were generated, and phylogenetic analyses were performed with maximum likelihood, maximum parsimony and Bayesian inference methods. The phylogenetic analyses based on molecular data of ITS and ITS+nLSU sequences showed that X. bambusinus was sister to X. subclavatus, while X. xinpingensis grouped with X. astrocystidiatus and X. paradoxus. The nLSU dataset revealed that X. bambusinus grouped with X. asperus and X. brevisetus with lower supports, and that X. xinpingensis grouped with X. astrocystidiatus and X. paradoxus and then with X. rimosissimus without supports. Both morphological and molecular evidences confirmed the placement of two new species in Xylodon. Description and figures from the new species and a key to the known species of Xylodon from China are presented.

Taxonomic revision of four species of the Neotropical land planarian genera Cratera and Geoplana (Platyhelminthes, Tricladida) with a description of two new species and an emendation of Cratera

Zootaxa ◽  
2018 ◽  
Vol 4500 (4) ◽  
pp. 517 ◽  
Author(s):  
DOMINGO LAGO-BARCIA ◽  
FERNANDO CARBAYO
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Morphological Feature ◽  
Ejaculatory Duct ◽  
Taxonomic Revision ◽  
Undescribed Species ◽  
Terminal Portion ◽  
Two New Species ◽  
A New Species ◽  
Land Planarian

The Brazilian land planarians Cratera crioula, C. joia, Geoplana hina, and G. taxiarcha (Platyhelminthes, Tricladida, Geoplanidae) are revised taxonomically from type material and additional specimens. Geoplana hina sensu Carbayo et al. (2013) was found to be an undescribed species and therefore is described and named as Cratera picuia sp. n. A new species of the genus is also described and named as Cratera arucuia sp. n. G. hina and G. taxiarcha are transferred to Cratera. The most remarkable morphological feature of Cratera—a dilated terminal portion of the ejaculatory duct—is either absent, inconspicuous, or variable in C. hina, C. joia, C. picuia sp. n., and C. arucuia sp. n. Based on the monophyletic status of Cratera inferred elsewhere, an emendation of the genus is here proposed to encompass the morphological variation observed in the genus. 

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