I describe the parasitic barnacle Mycetomorpha abyssalissp. nov. from the crangonid shrimp Sclerocrangon zenkevitchi collected from 3893–3890 m depth off the eastern coast of Iwate, Japan, northwestern Pacific. This is the first Mycetomorpha rhizocephalan from the abyssal zone and the third species in Mycetomorpha. Mycetomorpha abyssalissp. nov. differs from its congeners M. vancouverensis and M. albatrossi in (1) triangular shield lacking, (2) stalk one-quarter of length from posterior end of externa, (3) mantle opening clearly anterior to stalk, (4) different host genus, and (5) depth range much deeper. I determined partial sequences for the mitochondrial cytochrome c oxidase subunit I (COI) and 16S rRNA genes and nuclear 18S rRNA and 28S rRNA genes from M. abyssalissp. nov. for future DNA barcoding and phylogeny. Kimura 2-parameter distances between M. abyssalissp. nov. and M. vancouverensis were 21.2% (16S), 0.6% (18S), and 1.5% (28S).
我描述了寄生藤壶菌 Mycetomorpha abyssalissp.这是深海区的第一种霉形目根瘤菌，也是霉形目中的第三个物种。新种阿比西尼亚真菌（Mycetomorpha abyssalissp.nov.）与其同属种万古蛙真菌（M. vancouverensis）和信天翁真菌（M. albatrossi）的不同之处在于：（1）缺乏三角形盾片；（2）菌柄长度为外膜后端长度的四分之一；（3）套管开口明显位于菌柄前方；（4）宿主属不同；（5）深度范围更深。我测定了 M. abyssalissp.nov.的线粒体细胞色素 c 氧化酶亚单位 I（COI）和 16S rRNA 基因以及核 18S rRNA 和 28S rRNA 基因的部分序列，以便将来进行 DNA 条形编码和系统进化。M.abyssalissp.nov.和 M. vancouverensis 之间的 Kimura 2 参数距离分别为 21.2%（16S）、0.6%（18S）和 1.5%（28S）。
{"title":"A new parasitic barnacle (Crustacea, Cirripedia, Rhizocephala, Mycetomorpha) from the abyssal zone in the northwestern Pacific","authors":"K. Kakui","doi":"10.3897/zse.100.120887","DOIUrl":"https://doi.org/10.3897/zse.100.120887","url":null,"abstract":"I describe the parasitic barnacle Mycetomorpha abyssalissp. nov. from the crangonid shrimp Sclerocrangon zenkevitchi collected from 3893–3890 m depth off the eastern coast of Iwate, Japan, northwestern Pacific. This is the first Mycetomorpha rhizocephalan from the abyssal zone and the third species in Mycetomorpha. Mycetomorpha abyssalissp. nov. differs from its congeners M. vancouverensis and M. albatrossi in (1) triangular shield lacking, (2) stalk one-quarter of length from posterior end of externa, (3) mantle opening clearly anterior to stalk, (4) different host genus, and (5) depth range much deeper. I determined partial sequences for the mitochondrial cytochrome c oxidase subunit I (COI) and 16S rRNA genes and nuclear 18S rRNA and 28S rRNA genes from M. abyssalissp. nov. for future DNA barcoding and phylogeny. Kimura 2-parameter distances between M. abyssalissp. nov. and M. vancouverensis were 21.2% (16S), 0.6% (18S), and 1.5% (28S).","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140746554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Garra rezai was recently described from two geographically distant areas in the Tigris drainage: upper Yanarsu River (eastern Türkiye) and Bouein-Sofla Creek (Iran). In the scope of this study, we aimed to ascertain the distribution ranges of G. rezai and its morphologically most similar congener G. rufa in Türkiye by examining 1165 specimens from 73 lots, which were collected between 1957 and 2023 and currently curated in two broad fish collections. To achieve this, we focused on two important diagnostic morphological characters which distinguish these two species: scales on predorsal mid-line between dorsal-fin origin and nape, and branched dorsal-fin rays. The results revealed that G. rufa is a widely distributed species in the Tigris-Euphrates catchment, while G. rezai is regionally widespread, with populations identified in at least six different regions within the Tigris catchment. Additionally, G. rezai is documented for the first time in the upper Euphrates. Furthermore, we identified the drainage areas where G. rezai co-exists with G. rufa.
Garra rezai最近被描述于底格里斯河流域地理位置遥远的两个地区：亚纳苏河上游（土耳其东部）和布因-索夫拉河（伊朗）。Rufa 的分布范围。这些标本采集于 1957 年至 2023 年间，目前收藏于两个大型鱼类收藏馆，共 73 批 1165 份。为此，我们重点研究了区分这两个物种的两个重要的形态学特征：背鳍起源和颈部之间的背鳍中线上的鳞片以及分枝的背鳍射线。研究结果表明，G. rufa 是底格里斯河-幼发拉底河流域广泛分布的物种，而 G. rezai 则是区域分布广泛的物种，在底格里斯河流域至少有六个不同地区发现了其种群。此外，我们还首次在幼发拉底河上游发现了 G. rezai。此外，我们还确定了 G. rezai 与 G. rufa 共存的流域。
{"title":"Is Garra rezai (Teleostei, Cyprinidae) a species known only from two widely disjunct areas in the Tigris drainage?","authors":"C. Kaya, Haydar Birol Imre, I. Kurtul","doi":"10.3897/zse.100.118766","DOIUrl":"https://doi.org/10.3897/zse.100.118766","url":null,"abstract":"Garra rezai was recently described from two geographically distant areas in the Tigris drainage: upper Yanarsu River (eastern Türkiye) and Bouein-Sofla Creek (Iran). In the scope of this study, we aimed to ascertain the distribution ranges of G. rezai and its morphologically most similar congener G. rufa in Türkiye by examining 1165 specimens from 73 lots, which were collected between 1957 and 2023 and currently curated in two broad fish collections. To achieve this, we focused on two important diagnostic morphological characters which distinguish these two species: scales on predorsal mid-line between dorsal-fin origin and nape, and branched dorsal-fin rays. The results revealed that G. rufa is a widely distributed species in the Tigris-Euphrates catchment, while G. rezai is regionally widespread, with populations identified in at least six different regions within the Tigris catchment. Additionally, G. rezai is documented for the first time in the upper Euphrates. Furthermore, we identified the drainage areas where G. rezai co-exists with G. rufa.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140377061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang Zhou, Dongju Bian, ZI-MENG Yang, Zhisheng Zhang, Y. Tong, Shuqiang Li
Five species of the genus Opopaea Simon, 1892 from southern China are recognised, including four new species: Opopaea mangun Tong & Li, sp. nov., Opopaea taibao Tong & Yang, sp. nov., Opopaea wenshan Tong & Zhang, sp. nov. and Opopaea yuhuang Tong & Li, sp. nov. from Yunnan and one newly-recorded species: Opopaea foveolata Roewer, 1963 from Hainan. Detailed diagnoses, descriptions and photomicroscopy images of new species are provided, based on specimens of both sexes. A key to species of the genus Opopaea from China is provided.
{"title":"Four new species and one newly-recorded species of the genus Opopaea Simon, 1892 (Araneae, Oonopidae) from southern China, with a key to Chinese species","authors":"Yang Zhou, Dongju Bian, ZI-MENG Yang, Zhisheng Zhang, Y. Tong, Shuqiang Li","doi":"10.3897/zse.100.120305","DOIUrl":"https://doi.org/10.3897/zse.100.120305","url":null,"abstract":"Five species of the genus Opopaea Simon, 1892 from southern China are recognised, including four new species: Opopaea mangun Tong & Li, sp. nov., Opopaea taibao Tong & Yang, sp. nov., Opopaea wenshan Tong & Zhang, sp. nov. and Opopaea yuhuang Tong & Li, sp. nov. from Yunnan and one newly-recorded species: Opopaea foveolata Roewer, 1963 from Hainan. Detailed diagnoses, descriptions and photomicroscopy images of new species are provided, based on specimens of both sexes. A key to species of the genus Opopaea from China is provided.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bashimyzon, new genus, is here established for Erromyzon damingshanensis, and a new species of the genus is described from the You-Jiang of the Pearl River (=Zhu-Jiang in mandarin Chinese) basin in Guangxi Province, South China. This new genus has a small gill opening above the pectoral-fin base and short pectoral fins extending backwards short of pelvic-fin insertions, both characters combined to separate it from all currently-recognized gastromyzontid genera except Erromyzon and Protomyzon, but differs from the two genera in having a larger gap between the posterior edge of eye and the vertical through the pectoral-fin insertion and very small fleshy lobes posterior to the maxillary-barbel bases. It is further distinct from its most similar genus Erromyzon in having a relatively larger gill opening, fewer branched pectoral-fin rays folded against body, and more posteriorly placed pectoral fins with a shorter fin base. Bashimyzon cheni, new species, and B. damingshanensis, the single congeneric species, differ in number of lateral-line pored scales, body coloration, and cephalic contour, and also in substantial genetic divergence.
{"title":"Bashimyzon cheni, a new genus and species of sucker loach (Teleostei, Gastromyzontidae) from South China","authors":"Xiong Gong, E. Zhang, Nicolas Hubert","doi":"10.3897/zse.100.116535","DOIUrl":"https://doi.org/10.3897/zse.100.116535","url":null,"abstract":"Bashimyzon, new genus, is here established for Erromyzon damingshanensis, and a new species of the genus is described from the You-Jiang of the Pearl River (=Zhu-Jiang in mandarin Chinese) basin in Guangxi Province, South China. This new genus has a small gill opening above the pectoral-fin base and short pectoral fins extending backwards short of pelvic-fin insertions, both characters combined to separate it from all currently-recognized gastromyzontid genera except Erromyzon and Protomyzon, but differs from the two genera in having a larger gap between the posterior edge of eye and the vertical through the pectoral-fin insertion and very small fleshy lobes posterior to the maxillary-barbel bases. It is further distinct from its most similar genus Erromyzon in having a relatively larger gill opening, fewer branched pectoral-fin rays folded against body, and more posteriorly placed pectoral fins with a shorter fin base. Bashimyzon cheni, new species, and B. damingshanensis, the single congeneric species, differ in number of lateral-line pored scales, body coloration, and cephalic contour, and also in substantial genetic divergence.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140226059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oleg N. Artaev, I. Turbanov, A. Bolotovskiy, Aleksandr A. Gandlin, Boris A. Levin
Taxonomic revision of Phoxinus from the Caucasus revealed two distinct species. One species, P. colchicus, was known from eastern drainage of Black Sea, but was recorded also in the middle reach of the Kuban (Sea of Azov basin), for the first time. The Kuban population represents a genetically unique sub-lineage of P. colchicus. Its ancestors might have colonized the Kuban system through the event of ancient river capture. Another species inhabits only the Adagum River basin in the lower Kuban and represents a new narrow-ranged endemic species – Phoxinus adagumicus sp. nov. According to mtDNA phylogeny (COI and cytb), P. adagumicus sp. nov. represents deeply divergent and one of the two early branched lineages of the genus Phoxinus being distant to other species (min. p-distance = 0.074) including geographical neighbors – P. chrysoprasius from Crimean Peninsula and P. colchicus from the Caucasus. The new species differs from most Phoxinus species by frequently occurring single-row pharyngeal teeth (modal formula 5–4). The narrow geographic range (ca. 55 km in length and 15–20 km in width) and high anthropogenic load on local water systems suggests the new species is under threat and needs protection.
{"title":"Taxonomic revision of Phoxinus minnows (Leuciscidae) from Caucasus, with description of a new narrow-ranged endemic species","authors":"Oleg N. Artaev, I. Turbanov, A. Bolotovskiy, Aleksandr A. Gandlin, Boris A. Levin","doi":"10.3897/zse.100.115696","DOIUrl":"https://doi.org/10.3897/zse.100.115696","url":null,"abstract":"Taxonomic revision of Phoxinus from the Caucasus revealed two distinct species. One species, P. colchicus, was known from eastern drainage of Black Sea, but was recorded also in the middle reach of the Kuban (Sea of Azov basin), for the first time. The Kuban population represents a genetically unique sub-lineage of P. colchicus. Its ancestors might have colonized the Kuban system through the event of ancient river capture. Another species inhabits only the Adagum River basin in the lower Kuban and represents a new narrow-ranged endemic species – Phoxinus adagumicus sp. nov. According to mtDNA phylogeny (COI and cytb), P. adagumicus sp. nov. represents deeply divergent and one of the two early branched lineages of the genus Phoxinus being distant to other species (min. p-distance = 0.074) including geographical neighbors – P. chrysoprasius from Crimean Peninsula and P. colchicus from the Caucasus. The new species differs from most Phoxinus species by frequently occurring single-row pharyngeal teeth (modal formula 5–4). The narrow geographic range (ca. 55 km in length and 15–20 km in width) and high anthropogenic load on local water systems suggests the new species is under threat and needs protection.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140226134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Four morphologically similar species of the Pholcus yichengicus species group, occurring in geographic proximity of China’s Qinling Mountains, were recognised, based on morphology and four methods of molecular species delimitation. They comprise two new species, namely Pholcus ankangsp. nov. and P. baojisp. nov. and two previously described species: P. ovatus Yao & Li, 2012 and P. taibaiensis Wang & Zhu, 1992. Their DNA barcodes were obtained to estimate p-distances and K2P distances. In addition, an identification key for the four closely-related species is presented.
根据形态学和四种分子物种划分方法，确认了出现在中国秦岭附近的四种形态相似的Pholcus yichengicus物种群。它们包括两个新种，即 Pholcus ankangsp：P. ovatus Yao & Li, 2012 和 P. taibaiensis Wang & Zhu, 1992。它们的DNA条形码被用来估算p-距离和K2P距离。此外，还给出了这四个近缘种的鉴定检索表。
{"title":"Taxonomic study of four closely-related species of the Pholcus yichengicus species group (Araneae, Pholcidae) from China’s Qinling Mountains: An integrated morphological and molecular approach","authors":"Lan Yang, Qiaoqiao He, Zhiyuan Yao","doi":"10.3897/zse.100.115633","DOIUrl":"https://doi.org/10.3897/zse.100.115633","url":null,"abstract":"Four morphologically similar species of the Pholcus yichengicus species group, occurring in geographic proximity of China’s Qinling Mountains, were recognised, based on morphology and four methods of molecular species delimitation. They comprise two new species, namely Pholcus ankangsp. nov. and P. baojisp. nov. and two previously described species: P. ovatus Yao & Li, 2012 and P. taibaiensis Wang & Zhu, 1992. Their DNA barcodes were obtained to estimate p-distances and K2P distances. In addition, an identification key for the four closely-related species is presented.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140242238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bryan da Cunha Martins, Alexander Tamanini Mônico, Cianir Mendonça, S. P. Dantas, Jesus R. D. Souza, James Hanken, Albertina P. Lima, Miquéias Ferrão
By using integrative taxonomy, we describe a new species of terrestrial foam-nesting frog of the genus Adenomera from white-sand forests of the Rio Negro Sustainable Development Reserve, Central Amazonia, Brazil. Within the A. andreae clade, the new species belongs to the A. simonstuarti complex where it is sister to the lineage from the lower Juruá River. The new species is assigned to the genus Adenomera by having adult SVL smaller than 34.1 mm, by its lack of fringing and webbing between toes and by the absence of spines on the thumb of adult males. It differs from other Adenomera by the following combination of characters: antebrachial tubercle absent; toe tips flattened or slightly flattened, with visible expansions; nearly solid, dark-coloured stripe on underside of forearm; single-note advertisement call; notes formed by 11–21 incomplete pulses; call duration varying between 100 and 199 ms; fundamental frequency 1,765–2,239 Hz; dominant frequency 3,448–4,349 Hz; and endotrophic tadpoles with spiracle present and labial teeth absent. Over the last decade, we have inventoried many permanent sampling modules in ombrophilous forests in the Manaus Region and in the Purus-Madeira interfluve, but the new species was found only in the white-sand forest from West Negro-Solimões Interfluve. Adenomerasp. nov. may be endemic to, or at least a specialist in, this environment.
{"title":"A new species of terrestrial foam-nesting frog of the Adenomera simonstuarti complex (Anura, Leptodactylidae) from white-sand forests of central Amazonia, Brazil","authors":"Bryan da Cunha Martins, Alexander Tamanini Mônico, Cianir Mendonça, S. P. Dantas, Jesus R. D. Souza, James Hanken, Albertina P. Lima, Miquéias Ferrão","doi":"10.3897/zse.100.110133","DOIUrl":"https://doi.org/10.3897/zse.100.110133","url":null,"abstract":"By using integrative taxonomy, we describe a new species of terrestrial foam-nesting frog of the genus Adenomera from white-sand forests of the Rio Negro Sustainable Development Reserve, Central Amazonia, Brazil. Within the A. andreae clade, the new species belongs to the A. simonstuarti complex where it is sister to the lineage from the lower Juruá River. The new species is assigned to the genus Adenomera by having adult SVL smaller than 34.1 mm, by its lack of fringing and webbing between toes and by the absence of spines on the thumb of adult males. It differs from other Adenomera by the following combination of characters: antebrachial tubercle absent; toe tips flattened or slightly flattened, with visible expansions; nearly solid, dark-coloured stripe on underside of forearm; single-note advertisement call; notes formed by 11–21 incomplete pulses; call duration varying between 100 and 199 ms; fundamental frequency 1,765–2,239 Hz; dominant frequency 3,448–4,349 Hz; and endotrophic tadpoles with spiracle present and labial teeth absent. Over the last decade, we have inventoried many permanent sampling modules in ombrophilous forests in the Manaus Region and in the Purus-Madeira interfluve, but the new species was found only in the white-sand forest from West Negro-Solimões Interfluve. Adenomerasp. nov. may be endemic to, or at least a specialist in, this environment.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140260744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Costa, Caio R. M. Feltrin, J. L. Mattos, A. Katz
Psammocambeva exhibits the largest geographical distribution amongst the subgenera of Trichomycteruss.s., with its present northernmost represented by Trichomycterus tete, endemic to the upper Rio de Contas Basin in the Chapada Diamantina Region, north-eastern Brazil. Herein, we describe a new species recently collected in the Chapada Diamantina Region, but in the Rio Paraguaçu Basin, about 100 km north of the area inhabited by T. tete. A molecular phylogeny using one nuclear and two mitochondrial genes (2430 bp) supported the new species as sister to T. tete; both species are distinguished by colour patterns, morphometric data, relative position of dorsal and anal fins and osteological character states. The clade comprising the new species and T. tete, endemic to the semi-arid Caatinga biogeographical province, is supported as sister to a clade comprising species from the Rio Doce and Rio Paraíba do Sul Basins, in the Atlantic Forest biogeographical province. This study corroborated the Chapada Diamantina Region, a well-known mountainous biodiversity centre, as an important centre of endemism for trichomycterid catfishes.
在 Trichomycteruss.s. 的亚属中，Psammocambeva 的地理分布最广，目前最北的代表是 Trichomycterus tete，它是巴西东北部 Chapada Diamantina 地区 Rio de Contas 上游盆地的特有种。在此，我们描述了最近在 Chapada Diamantina 地区采集到的一个新物种，该物种位于 T. tete 栖息地以北约 100 公里处的 Rio Paraguaçu 盆地。使用一个核基因和两个线粒体基因（2430 bp）进行的分子系统进化支持该新物种是 T. tete 的姊妹物种；这两个物种通过颜色模式、形态数据、背鳍和臀鳍的相对位置以及骨学特征状态进行区分。由新物种和 T. tete 组成的支系为半干旱的卡廷加生物地理省所特有，与大西洋森林生物地理省的 Rio Doce 和 Rio Paraíba do Sul 盆地的物种组成的支系为姐妹支系。这项研究证实，Chapada Diamantina 地区是一个著名的山区生物多样性中心，也是毛鳞鲶的重要特有中心。
{"title":"Relationships and description of a new catfish species from Chapada Diamantina, the northernmost record of Trichomycterus s.s. (Siluriformes, Trichomycteridae)","authors":"W. Costa, Caio R. M. Feltrin, J. L. Mattos, A. Katz","doi":"10.3897/zse.100.115564","DOIUrl":"https://doi.org/10.3897/zse.100.115564","url":null,"abstract":"Psammocambeva exhibits the largest geographical distribution amongst the subgenera of Trichomycteruss.s., with its present northernmost represented by Trichomycterus tete, endemic to the upper Rio de Contas Basin in the Chapada Diamantina Region, north-eastern Brazil. Herein, we describe a new species recently collected in the Chapada Diamantina Region, but in the Rio Paraguaçu Basin, about 100 km north of the area inhabited by T. tete. A molecular phylogeny using one nuclear and two mitochondrial genes (2430 bp) supported the new species as sister to T. tete; both species are distinguished by colour patterns, morphometric data, relative position of dorsal and anal fins and osteological character states. The clade comprising the new species and T. tete, endemic to the semi-arid Caatinga biogeographical province, is supported as sister to a clade comprising species from the Rio Doce and Rio Paraíba do Sul Basins, in the Atlantic Forest biogeographical province. This study corroborated the Chapada Diamantina Region, a well-known mountainous biodiversity centre, as an important centre of endemism for trichomycterid catfishes.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140261711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lan Yang, Chang Fu, Yaxuan Zhang, Qiaoqiao He, Zhiyuan Yao
We report 18 spider species of the genus Pholcus Walckenaer, 1805 from a survey in the Qinling Mountains of central China. They belong to four species groups and include seven species new to science: Pholcus jiaozuo Yang & Yao, sp. nov. (♂♀) in the taishan species group; P. luonan Yang & Yao, sp. nov. (♂♀), P. luoyang Yang & Yao, sp. nov. (♂♀), P. lushan Yang & Yao, sp. nov. (♂♀), P. shangluo Yang & Yao, sp. nov. (♂♀), P. weinan Yang & Yao, sp. nov. (♂♀) and P. yuncheng Yang & Yao, sp. nov. (♂♀) in the yichengicus species group. Detailed diagnoses, descriptions, photomicroscopy images and DNA barcodes of all new species are provided. Our study will make a significant contribution to understanding species diversity and zoogeography of the region.
我们报告了在中国中部秦岭调查中发现的 Pholcus Walckenaer, 1805 属的 18 个蜘蛛物种。它们属于 4 个种组，其中包括 7 个科学新种：Pholcus jiaozuo Yang & Yao，sp. nov.(♂♀)；P. luonan Yang & Yao，sp. nov.(♂♀)，P. luoyang Yang & Yao，sp. nov.(♂♀)，P. lushan Yang & Yao，sp.(♂♀), P. luoyang Yang & Yao, sp. nov. (♂♀), P. lushan Yang & Yao, sp. nov. (♂♀) and P. yuncheng Yang & Yao, sp. nov. (♂♀) in the yichengicus species group.我们提供了所有新种的详细诊断、描述、显微图片和 DNA 条形码。我们的研究将为了解该地区的物种多样性和动物地理学做出重要贡献。
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We described herein Zhangixalus yunnanensissp. nov., a new treefrog species from central and western Yunnan, China, which had previously been confused with Z. nigropunctatus, based on morphological and molecular evidence. Our phylogenetic analyses revealed that the new species is sister to the clade of Z. nigropunctatus and Z. melanoleucus with strong support (100% and 73% for BI and ML, respectively). Our morphological analysis suggested that Z. yunnanensissp. nov. is distinctly different from all known congeners by the combination of the following morphological characters: black blotches on body flank and hind-limb, medium body size (SVL31.3–36.0 mm in males and 47.6–48.6 mm in females), head wider than long, iris yellowish-brown, dorsum uniformly green, vocal sac external, throat black, webbing greyish and fingers webbed one third and toes webbed half. Additionally, we revealed that the specimens ROM 38011 (Sa Pa, Vietnam) and VNMN 4099 (Son La, Vietnam) are neither Z. dorsoviridis nor Z. nigropunctatus, but probably represent one or two cryptic species of Zhangixalus pending further morphological and molecular data. Including the new species described herein, the genus Zhangixalus currently comprises 42 species, 30 of which are distributed in China with 11 species known from Yunnan. Amongst different zoogeographic regions in Yunnan, south-eastern Yunnan has the highest diversity of Zhangixalus, followed by western Yunnan and southern Yunnan. More studies are required to clarify the species diversity of this genus based on multiple lines of evidence (e.g. morphological and molecular data).
基于形态学和分子证据，我们描述了产于中国云南中西部的树蛙新种Zhangixalus yunnanensp.我们的系统进化分析表明，该新种是Z. nigropunctatus和Z. melanoleucus的姐妹支系，支持率很高（BI和ML分别为100%和73%）。形态学分析表明，云南虹鳟（Z. yunnanensissp.nov.）与所有已知的同属种都有明显的不同，其形态特征包括：体侧和后肢有黑色斑点，体型中等（雄虹鳟的SVL31.3-36.0 mm，雌虹鳟的SVL47.6-48.6 mm），头宽大于长，虹膜黄褐色，体背均匀绿色，声囊外露，喉黑色，蹼灰白色，手指有三分之一蹼，脚趾有一半蹼。此外，我们还发现 ROM 38011（越南沙坝）和 VNMN 4099（越南山腊）标本既不是 Z. dorsoviridis，也不是 Z. nigropunctatus，而可能是 Zhangixalus 的一个或两个隐生种，有待进一步的形态学和分子数据。包括本文描述的新种在内，张角雉属目前共有42种，其中30种分布于中国，云南已知11种。在云南不同的动物地理区域中，滇东南的张角雉多样性最高，其次是滇西和滇南。要根据多种证据（如形态学和分子数据）明确该属的物种多样性，还需要更多的研究。
{"title":"A new species of Zhangixalus (Anura, Rhacophoridae) from Yunnan, China","authors":"Yuanqiang Pan, Mian Hou, Guohua Yu, Shuo Liu","doi":"10.3897/zse.100.113850","DOIUrl":"https://doi.org/10.3897/zse.100.113850","url":null,"abstract":"We described herein Zhangixalus yunnanensissp. nov., a new treefrog species from central and western Yunnan, China, which had previously been confused with Z. nigropunctatus, based on morphological and molecular evidence. Our phylogenetic analyses revealed that the new species is sister to the clade of Z. nigropunctatus and Z. melanoleucus with strong support (100% and 73% for BI and ML, respectively). Our morphological analysis suggested that Z. yunnanensissp. nov. is distinctly different from all known congeners by the combination of the following morphological characters: black blotches on body flank and hind-limb, medium body size (SVL31.3–36.0 mm in males and 47.6–48.6 mm in females), head wider than long, iris yellowish-brown, dorsum uniformly green, vocal sac external, throat black, webbing greyish and fingers webbed one third and toes webbed half. Additionally, we revealed that the specimens ROM 38011 (Sa Pa, Vietnam) and VNMN 4099 (Son La, Vietnam) are neither Z. dorsoviridis nor Z. nigropunctatus, but probably represent one or two cryptic species of Zhangixalus pending further morphological and molecular data. Including the new species described herein, the genus Zhangixalus currently comprises 42 species, 30 of which are distributed in China with 11 species known from Yunnan. Amongst different zoogeographic regions in Yunnan, south-eastern Yunnan has the highest diversity of Zhangixalus, followed by western Yunnan and southern Yunnan. More studies are required to clarify the species diversity of this genus based on multiple lines of evidence (e.g. morphological and molecular data).","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140445825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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