Genus Rhacophorus Kuhl and Van Hasselt, 1 822 is one of the most diverse genera of the family Rhacophoridae, and its taxonomy of genus Rhacophorus faces major challenges because of rapidly described new species and co...Genus Rhacophorus Kuhl and Van Hasselt, 1 822 is one of the most diverse genera of the family Rhacophoridae, and its taxonomy of genus Rhacophorus faces major challenges because of rapidly described new species and complex interspecies relations. In this study, we investigate the generic taxonomy within the genus Rhacophorus based on 1 972 bp of mitochondrial genes(12S rRNA, tRNA-val and 16S rRNA), containing 102 sequences from 58 species. The results reveal three well-supported and highly diverged matrilines that correspond with morphological characteristics and geographic distribution. Accordingly, we consider these three lineages as distinct genera: Rhacophorus sensu stricto, resurrected genus Leptomantis Peters, 1867, and the genus Zhangixalus gen. nov.展开更多
该文描述了一个新属,其成员包括一群产于我国西部的竹种。最初它们被置于两个族的4个属中,随后,属于其中两个属的种被转移到镰序竹属Drepanostachyum Keng f.与悬竹属Ampelocalamus S.L.Chen et al.中。然而,这两个属的种也被互相转移...该文描述了一个新属,其成员包括一群产于我国西部的竹种。最初它们被置于两个族的4个属中,随后,属于其中两个属的种被转移到镰序竹属Drepanostachyum Keng f.与悬竹属Ampelocalamus S.L.Chen et al.中。然而,这两个属的种也被互相转移。实际上这些种的本身就形成一个相当自然的类群,颇易识别。不同于上述二属在于其独特的特征组合:花序小型,单独侧生于无叶花枝之各节,花序轴短,梗不明显;秆芽3,二型,分枝多数,二型;箨环显著呈环状突起。展开更多
We report on the discovery of a new genus of microhylid subfamily Asterophryinae from northern and eastern Indochina, containing three new species. Vietnamophryne （3en. nov. are secretive miniaturized frogs （SVL〈21...We report on the discovery of a new genus of microhylid subfamily Asterophryinae from northern and eastern Indochina, containing three new species. Vietnamophryne （3en. nov. are secretive miniaturized frogs （SVL〈21 mm） with a mostly semi-fossorial lifestyle. To assess phylogenetic relationships, we studied 12S rRNA - 16S rRNA mtDNA fragments with a final alignment of 2 591 bp for 53 microhylid species. Morphological and osteological characters were analyzed using micro-CT scanning and used to describe the new genus. Results of phylogenetic analyses assigned the new genus into the mainly Australasian subfamily Asterophryinae as a sister taxon to the genus Siamophryne from southern Indochina. The three specimens collected from Gia Lai Province in central Vietnam, Cao Bang Province in northern Vietnam, and Chiang Rai Province in northern Thailand proved to be separate species, different both in morphology and genetics （genetic divergence 3.1%〈P〈5.1%）. Our work provides further evidence for the ＂out of Indo-Eurasia＂ scenario for Asterophryinae, indicating that the initial cladogenesis and differentiation of this group of frogs occurred in the Indochina Peninsula. To date, eachof the three new species of Vietnamophryne Gen. nov. is known only from a single specimen; thus, their distribution, life history, and conservation status require further study.展开更多
The campterophlebiid new genus and species Ctenogampsophlebia reni is described from the Middle Jurassic of Inner Mongolia,China.It shows close similarities with the Lower to Middle Jurassic genera Gampsophlebia,and P...The campterophlebiid new genus and species Ctenogampsophlebia reni is described from the Middle Jurassic of Inner Mongolia,China.It shows close similarities with the Lower to Middle Jurassic genera Gampsophlebia,and Petrophlebia,with closed and short subdiscoidal cells,confirming the attribution of these two other genera to the Campterophlebiidae.展开更多
During a study on the diversity of ciliated protists in Lake Weishan Wetland,the largest wetland in northern China,four epibiotic sessilid peritrichs were isolated from aquatic host animals.Two of them,i.e.,Epistylis ...During a study on the diversity of ciliated protists in Lake Weishan Wetland,the largest wetland in northern China,four epibiotic sessilid peritrichs were isolated from aquatic host animals.Two of them,i.e.,Epistylis cambari Kellicott,1885 and Epistylis lwof Fauré-Fremiet,1943,were known species whereas the other two,i.e.,Parapiosoma typicum gen.nov.,sp.nov.and Orborhabdostyla gracilis sp.nov.,are new to science.The new genus Parapiosoma gen.nov.is characterized by its branched non-contractile stalk,everted peristomial lip,obconical macronucleus and transverse silverlines.Two species are assigned to the new genus,namely Parapiosoma typicum sp.nov.and Parapiosoma gasterostei(Fauré-Fremiet,1905)comb.nov.Morphologically,P.typicum sp.nov.is recognized by its goblet-shaped zooids,single-layered peristomial lip,dichotomously branched stalk,and infundibular polykinety 3(P3)containing three equal-length rows.Orborhabdostyla gracilis sp.nov.is characterized by its slender zooid,curved macronucleus,and three equal-length rows in infundibular P3.Improved diagnoses and redescriptions of E.cambari and E.lwof are provided including,for the frst time,data on the ciliature of E.cambari.Phylogenetic analyses based on SSU rDNA,ITS1-5.8S rDNA-ITS2,and LSU rDNA sequence data strongly support the assertion that the family Epistylididae comprises morphospecies with diferent evolutionary lineages and indicate that Parapiosoma gen.nov.may represent a new taxon at family level.展开更多
Two zosterophyll plants are described from the Lower Devonian （Lochkovian） Xitun Formation of Qujing, Yunnan, China. Xitunia spinitheca gen. et sp. nov. has stalked sporangia laterally attached on the axis in a heli...Two zosterophyll plants are described from the Lower Devonian （Lochkovian） Xitun Formation of Qujing, Yunnan, China. Xitunia spinitheca gen. et sp. nov. has stalked sporangia laterally attached on the axis in a helical arrangement. Sporangia are dorsoventrally flattened and composed of two unequal valves; the adaxial valve is round in face view, while the abaxial valve is larger than the former, triangular or wedge-shaped, and radially bears long spiny appendages along the distal margin. Xitunia shows new variation of sporangial morphology within the zosterophylls. Zosterophyllum minorstachyum sp. nov. has K-shaped branchings at the basal parts and small-sized terminal spikes, which consist of round to elliptical sporangia arranged helically. This paper provides new data on the diversity of plant types during Lochkovian when rare vascular plants were reported. As for various species of Zosterophyllum in South China, their apparent evolutionary trend of features from the Late Silurian to Early Devonian （Emsian） is discussed.展开更多
基金supported by National Key R&D Program of China (2016YFC1200705)the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB31000000)+4 种基金the National Natural Science Foundation of China (31722049, 31772434)Key Research Program of Frontier Sciences, CAS (QYZDBSSW-SMC058)the Youth Innovation Promotion Association of CASSoutheast Asia Biodiversity Research Institute (Y4ZK111B01)the CAS "Light of West China" Program (2018XBZG_JCTD_001)
文摘Genus Rhacophorus Kuhl and Van Hasselt, 1 822 is one of the most diverse genera of the family Rhacophoridae, and its taxonomy of genus Rhacophorus faces major challenges because of rapidly described new species and complex interspecies relations. In this study, we investigate the generic taxonomy within the genus Rhacophorus based on 1 972 bp of mitochondrial genes(12S rRNA, tRNA-val and 16S rRNA), containing 102 sequences from 58 species. The results reveal three well-supported and highly diverged matrilines that correspond with morphological characteristics and geographic distribution. Accordingly, we consider these three lineages as distinct genera: Rhacophorus sensu stricto, resurrected genus Leptomantis Peters, 1867, and the genus Zhangixalus gen. nov.
文摘该文描述了一个新属,其成员包括一群产于我国西部的竹种。最初它们被置于两个族的4个属中,随后,属于其中两个属的种被转移到镰序竹属Drepanostachyum Keng f.与悬竹属Ampelocalamus S.L.Chen et al.中。然而,这两个属的种也被互相转移。实际上这些种的本身就形成一个相当自然的类群,颇易识别。不同于上述二属在于其独特的特征组合:花序小型,单独侧生于无叶花枝之各节,花序轴短,梗不明显;秆芽3,二型,分枝多数,二型;箨环显著呈环状突起。
基金supported by the programs of the National Natural Science Foundation of China(31501843,31622052)Southeast Asia Biodiversity Research Institute,Chinese Academy of Sciences(CAS)(Y4ZK111B01:2017CASSEABRIQG002)+2 种基金Animal Branch of the Germplasm Bank of Wild Species,CAS(Large Research Infrastructure Funding)Thailand Research Fund(TRF)(DBG6180001)Molecular experiments,phylogenetic analyses,specimen storage,examination and micro CT-analysis were carried out with the financial support of the Russian Science Foundation(RSF14-50-00029)
文摘We report on the discovery of a new genus of microhylid subfamily Asterophryinae from northern and eastern Indochina, containing three new species. Vietnamophryne （3en. nov. are secretive miniaturized frogs （SVL〈21 mm） with a mostly semi-fossorial lifestyle. To assess phylogenetic relationships, we studied 12S rRNA - 16S rRNA mtDNA fragments with a final alignment of 2 591 bp for 53 microhylid species. Morphological and osteological characters were analyzed using micro-CT scanning and used to describe the new genus. Results of phylogenetic analyses assigned the new genus into the mainly Australasian subfamily Asterophryinae as a sister taxon to the genus Siamophryne from southern Indochina. The three specimens collected from Gia Lai Province in central Vietnam, Cao Bang Province in northern Vietnam, and Chiang Rai Province in northern Thailand proved to be separate species, different both in morphology and genetics （genetic divergence 3.1%〈P〈5.1%）. Our work provides further evidence for the ＂out of Indo-Eurasia＂ scenario for Asterophryinae, indicating that the initial cladogenesis and differentiation of this group of frogs occurred in the Indochina Peninsula. To date, eachof the three new species of Vietnamophryne Gen. nov. is known only from a single specimen; thus, their distribution, life history, and conservation status require further study.
基金financial support from the Chinese Academy of Sciences(grant no.KZCX2-YW-QN104)the National Museum of Natural History of Paris(MNHN)+1 种基金the funds provided for this research:grants PIP 6393,PIP 11420090100377BEJI from the National Research Council of Argentina(CONICET)
文摘The campterophlebiid new genus and species Ctenogampsophlebia reni is described from the Middle Jurassic of Inner Mongolia,China.It shows close similarities with the Lower to Middle Jurassic genera Gampsophlebia,and Petrophlebia,with closed and short subdiscoidal cells,confirming the attribution of these two other genera to the Campterophlebiidae.
基金This work was supported by the National Natural Science Foundation of China(Project numbers:32030015,32000300)the Natural Science Foundation of Shandong Province(Project number:ZR2021QC104,ZR2022QC096)+1 种基金China Postdoctoral Science Foundation(Project numbers:2021M701993,2022M711922)the King Saud University,Saudi Arabia(Project number RSP2023R10).We sincerely thank the“Weishan Wetland Station”for institutional support.
文摘During a study on the diversity of ciliated protists in Lake Weishan Wetland,the largest wetland in northern China,four epibiotic sessilid peritrichs were isolated from aquatic host animals.Two of them,i.e.,Epistylis cambari Kellicott,1885 and Epistylis lwof Fauré-Fremiet,1943,were known species whereas the other two,i.e.,Parapiosoma typicum gen.nov.,sp.nov.and Orborhabdostyla gracilis sp.nov.,are new to science.The new genus Parapiosoma gen.nov.is characterized by its branched non-contractile stalk,everted peristomial lip,obconical macronucleus and transverse silverlines.Two species are assigned to the new genus,namely Parapiosoma typicum sp.nov.and Parapiosoma gasterostei(Fauré-Fremiet,1905)comb.nov.Morphologically,P.typicum sp.nov.is recognized by its goblet-shaped zooids,single-layered peristomial lip,dichotomously branched stalk,and infundibular polykinety 3(P3)containing three equal-length rows.Orborhabdostyla gracilis sp.nov.is characterized by its slender zooid,curved macronucleus,and three equal-length rows in infundibular P3.Improved diagnoses and redescriptions of E.cambari and E.lwof are provided including,for the frst time,data on the ciliature of E.cambari.Phylogenetic analyses based on SSU rDNA,ITS1-5.8S rDNA-ITS2,and LSU rDNA sequence data strongly support the assertion that the family Epistylididae comprises morphospecies with diferent evolutionary lineages and indicate that Parapiosoma gen.nov.may represent a new taxon at family level.
基金supportedby the National Natural Science Foundation of China(Nos.40672001,40802003,40830211)China PostdoctoralScience Foundation(20070420245)
文摘Two zosterophyll plants are described from the Lower Devonian （Lochkovian） Xitun Formation of Qujing, Yunnan, China. Xitunia spinitheca gen. et sp. nov. has stalked sporangia laterally attached on the axis in a helical arrangement. Sporangia are dorsoventrally flattened and composed of two unequal valves; the adaxial valve is round in face view, while the abaxial valve is larger than the former, triangular or wedge-shaped, and radially bears long spiny appendages along the distal margin. Xitunia shows new variation of sporangial morphology within the zosterophylls. Zosterophyllum minorstachyum sp. nov. has K-shaped branchings at the basal parts and small-sized terminal spikes, which consist of round to elliptical sporangia arranged helically. This paper provides new data on the diversity of plant types during Lochkovian when rare vascular plants were reported. As for various species of Zosterophyllum in South China, their apparent evolutionary trend of features from the Late Silurian to Early Devonian （Emsian） is discussed.
