Attapol Rujirawan, Siriporn Yodthong, Natee Ampai, Korkhwan Termprayoon, Akrachai Aksornneam, B. Stuart, A. Aowphol
We describe a new species of the gekkonid genus Cnemaspis from Erawan National Park in Kanchanaburi Province of western Thailand. Molecular phylogenetic analyses, based on the mitochondrial NADH dehydrogenase subunit 2 gene and flanking tRNAs, revealed that Cnemaspis auriventralissp. nov. is nested within the C. siamensis group and is closely related to C. huaseesom, but has uncorrected pairwise genetic divergences of 12.12–27.92% from all other species in the C. siamensis group. The new species is also distinguished from other species in the C. siamensis group by having the combination of snout-vent length 36.7–38.6 mm in males (N = 3), 32.9–36.9 mm in females (N = 2); eight to ten supralabials; seven to nine infralabials; ventral scales smooth; six or seven precloacal pores in males; 16–17 paravertebral tubercles linearly arranged; tubercles on the lower flanks present; lateral caudal furrows present; no caudal tubercles in the lateral furrows; ventrolateral caudal tubercles present anteriorly; caudal tubercles not encircling tail; subcaudals smooth bearing a single median row of enlarged smooth scales; two postcloacal tubercles on each side; no shield-like subtibial scales; subtibial scales smooth; no enlarged submetatarsal scales; 23–27 subdigital lamellae on the fourth toe; sexually dimorphic for dorsal and ventral colour pattern; prescapular marking absent; gular marking absent; and yellow colouration in life of all ventral surfaces of head, body and tail in adult males. The new species is currently known only from upland karst habitat at its type locality.
本文报道了泰国西部北碧府四面湾国家公园的一新种。基于线粒体NADH脱氢酶亚基2基因和侧翼tRNAs的分子系统发育分析显示，Cnemaspis auriventralissp。11 .在C. siamensis类群中筑巢，与C. huaseesom亲缘关系密切，但与C. siamensis类群中其他物种的遗传差异未校正为12.12-27.92%。该新种与其他物种的区别还表现为:雄口长36.7 ~ 38.6 mm (N = 3)，雌口长32.9 ~ 36.9 mm (N = 2);八至十次超限;七至九次;腹部鳞片光滑;六或七个阴囊前孔在雄性;16-17个椎旁结节线性排列;在下侧面的小结节存在;侧尾沟存在;在侧沟中无尾端结节;腹外侧尾侧结节位于前方;不环绕尾部的尾结节;近尾鳍光滑，具一增大的光滑鳞片的单中间排;在每侧的两个腔后结节;无盾状胫下鳞片;胫下鳞片光滑;未见跖下鳞片增大;在第四趾上有23-27个亚指片;两性二态的背面和腹部的颜色模式;无包皮前标记;无规则标记;成年雄性的头、身体和尾巴的所有腹面在生活中呈黄色。该新种目前仅在其类型地的高地喀斯特生境中发现。
{"title":"A new rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand","authors":"Attapol Rujirawan, Siriporn Yodthong, Natee Ampai, Korkhwan Termprayoon, Akrachai Aksornneam, B. Stuart, A. Aowphol","doi":"10.3897/zse.98.89591","DOIUrl":"https://doi.org/10.3897/zse.98.89591","url":null,"abstract":"We describe a new species of the gekkonid genus Cnemaspis from Erawan National Park in Kanchanaburi Province of western Thailand. Molecular phylogenetic analyses, based on the mitochondrial NADH dehydrogenase subunit 2 gene and flanking tRNAs, revealed that Cnemaspis auriventralissp. nov. is nested within the C. siamensis group and is closely related to C. huaseesom, but has uncorrected pairwise genetic divergences of 12.12–27.92% from all other species in the C. siamensis group. The new species is also distinguished from other species in the C. siamensis group by having the combination of snout-vent length 36.7–38.6 mm in males (N = 3), 32.9–36.9 mm in females (N = 2); eight to ten supralabials; seven to nine infralabials; ventral scales smooth; six or seven precloacal pores in males; 16–17 paravertebral tubercles linearly arranged; tubercles on the lower flanks present; lateral caudal furrows present; no caudal tubercles in the lateral furrows; ventrolateral caudal tubercles present anteriorly; caudal tubercles not encircling tail; subcaudals smooth bearing a single median row of enlarged smooth scales; two postcloacal tubercles on each side; no shield-like subtibial scales; subtibial scales smooth; no enlarged submetatarsal scales; 23–27 subdigital lamellae on the fourth toe; sexually dimorphic for dorsal and ventral colour pattern; prescapular marking absent; gular marking absent; and yellow colouration in life of all ventral surfaces of head, body and tail in adult males. The new species is currently known only from upland karst habitat at its type locality.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"8 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75076553","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}
G. C. Deprá, G. Aguilera, Dario R. Faustino‐Fuster, A. Katz, V. Azevedo-Santos
A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini, H. carmelitanorum, H. carnatus, H. exilis, H. hollandi, H. mandimbusu, H. mbya, H. mustelinus, H. ornaticeps, and H. qenqo. Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi).
{"title":"Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil","authors":"G. C. Deprá, G. Aguilera, Dario R. Faustino‐Fuster, A. Katz, V. Azevedo-Santos","doi":"10.3897/zse.98.89413","DOIUrl":"https://doi.org/10.3897/zse.98.89413","url":null,"abstract":"A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini, H. carmelitanorum, H. carnatus, H. exilis, H. hollandi, H. mandimbusu, H. mbya, H. mustelinus, H. ornaticeps, and H. qenqo. Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi).","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"211 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77272610","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}
Piyatida Pimvichai, H. Enghoff, S. Panha, T. Backeljau
A new genus of the millipede family Pseudospirobolellidae, Siliquobolellusgen. nov., is described from limestone mountains in Thailand, based on three new species, viz. Siliquobolellus amicusdraconisgen. et sp. nov. from Uthaithani Province, Siliquobolellus constrictusgen. et sp. nov. from Prachuap Khiri Khan Province and Siliquobolellus prasankokaegen. et sp. nov. (type species) from Lampang Province. The descriptions are based on gonopod morphology and mitochondrial DNA data (COI barcodes). The COI barcodes grouped the three new species in a well-supported Siliquobolellusgen. nov. clade. The mean interspecific COI sequence divergence among the three new species was 12% (range: 8–15%). The mean intergeneric COI sequence divergence between Siliquobolellusgen. nov., Coxobolellus Pimvichai, Enghoff, Panha & Backeljau, 2020, and Pseudospirobolellus Carl, 1912 was 19% (range: 14–23%). Three conspicuous gonopodal synapomorphies differentiate Siliquobolellusgen. nov. from other pseudospirobollellid genera: (1) the telopodital part of the posterior gonopod forms a deep concavity, (2) the telopodite of the anterior gonopod is directed distad and does not reach the tip of the coxal part of the anterior gonopod, and (3) the tip of the anterior gonopod coxa is narrowed, curving mesad. As such, the monophyly of the new genus is well supported by both morphological and mitochondrial DNA data. A distribution map and an identification key to the species are provided.
{"title":"A new genus of Pseudospirobolellidae (Diplopoda, Spirobolida) from limestone karst areas in Thailand, with descriptions of three new species","authors":"Piyatida Pimvichai, H. Enghoff, S. Panha, T. Backeljau","doi":"10.3897/zse.98.90032","DOIUrl":"https://doi.org/10.3897/zse.98.90032","url":null,"abstract":"A new genus of the millipede family Pseudospirobolellidae, Siliquobolellusgen. nov., is described from limestone mountains in Thailand, based on three new species, viz. Siliquobolellus amicusdraconisgen. et sp. nov. from Uthaithani Province, Siliquobolellus constrictusgen. et sp. nov. from Prachuap Khiri Khan Province and Siliquobolellus prasankokaegen. et sp. nov. (type species) from Lampang Province. The descriptions are based on gonopod morphology and mitochondrial DNA data (COI barcodes). The COI barcodes grouped the three new species in a well-supported Siliquobolellusgen. nov. clade. The mean interspecific COI sequence divergence among the three new species was 12% (range: 8–15%). The mean intergeneric COI sequence divergence between Siliquobolellusgen. nov., Coxobolellus Pimvichai, Enghoff, Panha & Backeljau, 2020, and Pseudospirobolellus Carl, 1912 was 19% (range: 14–23%). Three conspicuous gonopodal synapomorphies differentiate Siliquobolellusgen. nov. from other pseudospirobollellid genera: (1) the telopodital part of the posterior gonopod forms a deep concavity, (2) the telopodite of the anterior gonopod is directed distad and does not reach the tip of the coxal part of the anterior gonopod, and (3) the tip of the anterior gonopod coxa is narrowed, curving mesad. As such, the monophyly of the new genus is well supported by both morphological and mitochondrial DNA data. A distribution map and an identification key to the species are provided.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"389 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87803644","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}
Five species were identified in the studied collection: Colossendeis megalonyx Hoek, 1881, first record for Uruguay, Ascorhynchus corderoi du Bois-Reymond Marcus, 1952 and Pallenopsis candidoi Mello-Leitão, 1949, with extended ranges, Pallenopsis patagonica (Hoek, 1881), a species complex recently analysed with molecular data and Ammothea tetrapoda, recorded previously for Uruguayan waters. Our study clarifies records based on morphology, provides new data on distributions and species ranges and correlates species with ecological conditions.
{"title":"Pycnogonida (Arthropoda) from Museu de Ciências Naturais, Rio Grande do Sul, Brazil","authors":"Rudá Amorim Lucena, Martin Lindsey Christoffersen","doi":"10.3897/zse.98.83671","DOIUrl":"https://doi.org/10.3897/zse.98.83671","url":null,"abstract":"Five species were identified in the studied collection: Colossendeis megalonyx Hoek, 1881, first record for Uruguay, Ascorhynchus corderoi du Bois-Reymond Marcus, 1952 and Pallenopsis candidoi Mello-Leitão, 1949, with extended ranges, Pallenopsis patagonica (Hoek, 1881), a species complex recently analysed with molecular data and Ammothea tetrapoda, recorded previously for Uruguayan waters. Our study clarifies records based on morphology, provides new data on distributions and species ranges and correlates species with ecological conditions.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"7 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82851893","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}
Anotai Suklom, Tosaphol Saetung Keetapithchayakul, A. A. Abdul Rahim, K. Wongkamhaeng
Two new species of Floresorchestia (Crustacea: Amphipoda) are described from Amphawa Estuary, Samut Songkhram Province, Thailand. Floresorchestia amphawaensissp. nov. is a riparian-hoppers living near agricultural and urban areas, being distinguished by the following character states: left mandible lacinia mobilis 4-dentate; gnathopod 2 palm reaching about 34%; telson as broad as long, with four robust setae per lobe. Floresorchestia pongratisp. nov. are described as riparian-hoppers living in the moist area near Mae Klong canal banks with a unique left mandible lacinia mobilis 5-dentate; gnathopod 2 palm reaching 30% and telson with seven robust setae per lobe. The status and the problem of diagnostic character states of the genus Floresorchestia are discussed.
{"title":"Two new species of the genus Floresorchestia (Crustacea, Amphipoda, Talitridae) from Amphawa Estuary, Samut Songkhram Province, Thailand","authors":"Anotai Suklom, Tosaphol Saetung Keetapithchayakul, A. A. Abdul Rahim, K. Wongkamhaeng","doi":"10.3897/zse.98.83749","DOIUrl":"https://doi.org/10.3897/zse.98.83749","url":null,"abstract":"Two new species of Floresorchestia (Crustacea: Amphipoda) are described from Amphawa Estuary, Samut Songkhram Province, Thailand. Floresorchestia amphawaensissp. nov. is a riparian-hoppers living near agricultural and urban areas, being distinguished by the following character states: left mandible lacinia mobilis 4-dentate; gnathopod 2 palm reaching about 34%; telson as broad as long, with four robust setae per lobe. Floresorchestia pongratisp. nov. are described as riparian-hoppers living in the moist area near Mae Klong canal banks with a unique left mandible lacinia mobilis 5-dentate; gnathopod 2 palm reaching 30% and telson with seven robust setae per lobe. The status and the problem of diagnostic character states of the genus Floresorchestia are discussed.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"1 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89261140","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}
Pseudohynobius flavomaculatus a provincially-protected salamander species, inhabits mountainous areas of Chongqing and surrounding provinces in China. In the present study, the complete mitochondrial genome of P. flavomaculatus was sequenced and analyzed. The mitogenome is 16,401 bp in length and consisted of 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a control region. We performed a novel phylogenetic analysis, which demonstrated a sister relationship between P. flavomaculatus and P. jinfo. The 95% confidence interval around our new divergence date estimate suggest that Hynobiidae originated at 101.62–119.84 (mean=110.87) Ma. Species within Hynobiidae diverged successively in the Cenozoic era, and hynobiid speciation coincides primarily with geologic events. Our biogeographical inference demonstrates that nearly all early hynobiids divergences correspond to geological estimates of orogeny, which may have contributed to the notably high dN/dS ratio in this clade. We conclude that orogeny is likely a primary, dynamic factor, which may have repeatedly initiated the process of speciation in the family Hynobiidae.
黄斑拟蝾螈(Pseudohynobius flavomaculatus)是一种省级保护的蝾螈，栖息在中国重庆及周边省份的山区。本研究对黄颡鱼线粒体全基因组进行了测序和分析。有丝分裂基因组全长16401 bp，由13个蛋白质编码基因、2个核糖体RNA基因、22个转移RNA基因和1个控制区组成。我们进行了一项新的系统发育分析，证明了黄斑假单胞菌和黄斑假单胞菌之间的姐妹关系。新分化日期估计的95%置信区间表明，海蛾科起源于101.62 ~ 119.84 Ma (mean=110.87)。新生代海鸟科内的种类相继分化，海鸟的形成主要与地质事件一致。我们的生物地理学推断表明，几乎所有早期双生子的分叉都与造山运动的地质估计相一致，这可能是该分支中显著高dN/dS比率的原因。我们得出结论，造山运动可能是一个主要的动态因素，它可能反复启动了海蠓科物种形成的过程。
{"title":"Mitochondrial characteristics of Pseudohynobius flavomaculatus a protected salamander in China, and biogeographical implications for the family Hynobiidae (Amphibia, Caudata)","authors":"Yu Zhang, Meng Wang, Ruli Cheng, Yang Luo, Yingwen Li, Zhihao Liu, Qiliang Chen, Yanjun Shen","doi":"10.3897/zse.98.66578","DOIUrl":"https://doi.org/10.3897/zse.98.66578","url":null,"abstract":"Pseudohynobius flavomaculatus a provincially-protected salamander species, inhabits mountainous areas of Chongqing and surrounding provinces in China. In the present study, the complete mitochondrial genome of P. flavomaculatus was sequenced and analyzed. The mitogenome is 16,401 bp in length and consisted of 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a control region. We performed a novel phylogenetic analysis, which demonstrated a sister relationship between P. flavomaculatus and P. jinfo. The 95% confidence interval around our new divergence date estimate suggest that Hynobiidae originated at 101.62–119.84 (mean=110.87) Ma. Species within Hynobiidae diverged successively in the Cenozoic era, and hynobiid speciation coincides primarily with geologic events. Our biogeographical inference demonstrates that nearly all early hynobiids divergences correspond to geological estimates of orogeny, which may have contributed to the notably high dN/dS ratio in this clade. We conclude that orogeny is likely a primary, dynamic factor, which may have repeatedly initiated the process of speciation in the family Hynobiidae.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"25 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77881586","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}
The common Asian toad Duttaphrynus melanostictus (Schneider, 1799) complex has a wide distribution ranging from western foothills of the Himalaya to the easternmost range of the Wallacea, with the evidence of human-mediated introductions to some other areas. In the entire distribution range, the complex is formed by several evolutionary clades, distributed mostly in South-East Asia with unresolved taxonomy. In the northwestern edge of its distribution (Pakistan), the name D. melanostictus hazarensis (Khan, 2001) has been assigned to local populations but its biological basis remained, so far, understudied and unvalidated. Therefore, we re-evaluated the available genetic data (mitochondrial and nuclear) to show the relationships between Pakistani populations (including the type locality of D. m. hazarensis) and others from across the range. Our results showed that Pakistani populations are associated with one, deeply diverged, well-supported and widely distributed clade (so-called Duttaphrynus sp. 1 according to 16S, or clade B based on tRNAGly-ND3), that has already been detected in previous studies. This clade is further distributed in India, Nepal, Bangladesh, Malaysia, Singapore, and Indonesia and is characterized by a low level of genetic variability. This further suggests that both natural, as well as potential human-mediated dispersal, might have played an important role in setting up the current phylogeographic and distribution pattern of this clade. The clade is deeply divergent from other clades of the complex and represents a taxonomically unresolved entity. We here argue that the clade Duttaphrynus sp. 1/B represents a distinct species for which the name Duttaphrynus bengalensis (Daudin, 1802) comb. nov. is applicable, while the description of D. m. hazarensis does not satisfy the rules of the International Code of Zoological Nomenclature.
{"title":"On the edge of the Shivaliks: An insight into the origin and taxonomic position of Pakistani toads from the Duttaphrynus melanostictus complex (Amphibia, Bufonidae)","authors":"D. Jablonski, Rafaqat Masroor, S. Hofmann","doi":"10.3897/zse.98.79213","DOIUrl":"https://doi.org/10.3897/zse.98.79213","url":null,"abstract":"The common Asian toad Duttaphrynus melanostictus (Schneider, 1799) complex has a wide distribution ranging from western foothills of the Himalaya to the easternmost range of the Wallacea, with the evidence of human-mediated introductions to some other areas. In the entire distribution range, the complex is formed by several evolutionary clades, distributed mostly in South-East Asia with unresolved taxonomy. In the northwestern edge of its distribution (Pakistan), the name D. melanostictus hazarensis (Khan, 2001) has been assigned to local populations but its biological basis remained, so far, understudied and unvalidated. Therefore, we re-evaluated the available genetic data (mitochondrial and nuclear) to show the relationships between Pakistani populations (including the type locality of D. m. hazarensis) and others from across the range. Our results showed that Pakistani populations are associated with one, deeply diverged, well-supported and widely distributed clade (so-called Duttaphrynus sp. 1 according to 16S, or clade B based on tRNAGly-ND3), that has already been detected in previous studies. This clade is further distributed in India, Nepal, Bangladesh, Malaysia, Singapore, and Indonesia and is characterized by a low level of genetic variability. This further suggests that both natural, as well as potential human-mediated dispersal, might have played an important role in setting up the current phylogeographic and distribution pattern of this clade. The clade is deeply divergent from other clades of the complex and represents a taxonomically unresolved entity. We here argue that the clade Duttaphrynus sp. 1/B represents a distinct species for which the name Duttaphrynus bengalensis (Daudin, 1802) comb. nov. is applicable, while the description of D. m. hazarensis does not satisfy the rules of the International Code of Zoological Nomenclature.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"99 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80995444","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}
The female specimen of Ascorhynchus hippos Turpaeva, 1994 was collected in 2015 during the Russian-German deep-sea expedition SokhoBio (Sea of Okhotsk Biodiversity Studies) at the abyssal western slope of the Kuril-Kamchatka Trench at a depth of 4469 m using a camera-epibenthic sledge. It is the first record of this species since the discovery of one female holotype and one male paratype in 1990. Ascorhynchus hippos is easily distinguishable from its congeners by the two prominent tubercles above the chelifore insertions, the absence of the eye tubercle and eyes, and the tubercles on the mid-dorsal trunk segments and the lateral processes. Here we present the first photographic documentation of all three known specimens of A. hippos and the COI barcode of the new specimen is also provided.
{"title":"Rediscovery after 25 years – first photographic documentation and DNA barcoding of the deep-sea pycnogonid species Ascorhynchus hippos Turpaeva, 1994 (Chelicerata, Pycnogonida, Ascorhynchidae) from the Kuril-Kamchatka Trench","authors":"Lisa A. Wolf, R. Melzer, Tobias Lehmann","doi":"10.3897/zse.98.84864","DOIUrl":"https://doi.org/10.3897/zse.98.84864","url":null,"abstract":"The female specimen of Ascorhynchus hippos Turpaeva, 1994 was collected in 2015 during the Russian-German deep-sea expedition SokhoBio (Sea of Okhotsk Biodiversity Studies) at the abyssal western slope of the Kuril-Kamchatka Trench at a depth of 4469 m using a camera-epibenthic sledge. It is the first record of this species since the discovery of one female holotype and one male paratype in 1990. Ascorhynchus hippos is easily distinguishable from its congeners by the two prominent tubercles above the chelifore insertions, the absence of the eye tubercle and eyes, and the tubercles on the mid-dorsal trunk segments and the lateral processes. Here we present the first photographic documentation of all three known specimens of A. hippos and the COI barcode of the new specimen is also provided.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"57 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81051255","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}
We describe the new brackish tanaidid species Sinelobus kisuisp. nov. from Hagi, Yamaguchi, Japan. Sinelobus kisui is similar to S. barretti and S. vanhaareni in having antennal article 2 with one outer distal seta, the dorsodistal crotchet on pereopods 2 and 3 carpi shorter than half propodus length, and pereopodal carpi 2–6 with five distal crotchets, but differs from them in having (1) the inner of two ventro-subdistal circumplumose setae on the maxillipedal endite longer than the outer; (2) the maxillipedal endite with one mid-inner spiniform seta; (3) the pereopod-1 propodus with one middle setulate seta; and (4) the pleopod-1 protopod lacking inner plumose setae. Our study confirmed that character states of the chelipeds in strongly dimorphic males are useful in Sinelobus taxonomy. We determined partial sequences for the cytochrome c oxidase subunit I (COI; cox1) and 18S rRNA (18S) genes in S. kisui for future DNA barcoding and phylogenetic analyses. Morphological and/or molecular data reveal that S. kisui also occurs in Kagawa and Osaka, Japan. A key to species in Sinelobus is provided.
{"title":"A new brackish tanaidacean, Sinelobus kisui sp. nov. (Crustacea, Peracarida, Tanaidacea), from Japan, with a key to Sinelobus species and barcode information from two loci","authors":"Kyoko Hirano, Keiichi Kakui","doi":"10.3897/zse.98.84818","DOIUrl":"https://doi.org/10.3897/zse.98.84818","url":null,"abstract":"We describe the new brackish tanaidid species Sinelobus kisuisp. nov. from Hagi, Yamaguchi, Japan. Sinelobus kisui is similar to S. barretti and S. vanhaareni in having antennal article 2 with one outer distal seta, the dorsodistal crotchet on pereopods 2 and 3 carpi shorter than half propodus length, and pereopodal carpi 2–6 with five distal crotchets, but differs from them in having (1) the inner of two ventro-subdistal circumplumose setae on the maxillipedal endite longer than the outer; (2) the maxillipedal endite with one mid-inner spiniform seta; (3) the pereopod-1 propodus with one middle setulate seta; and (4) the pleopod-1 protopod lacking inner plumose setae. Our study confirmed that character states of the chelipeds in strongly dimorphic males are useful in Sinelobus taxonomy. We determined partial sequences for the cytochrome c oxidase subunit I (COI; cox1) and 18S rRNA (18S) genes in S. kisui for future DNA barcoding and phylogenetic analyses. Morphological and/or molecular data reveal that S. kisui also occurs in Kagawa and Osaka, Japan. A key to species in Sinelobus is provided.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"25 4","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138510234","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}
Yi Liu, Xiao-Yu Song, Zhong-Yin Sun, Wei-Xuan Li, Ronald Sluys, Shuang-Fei Li, An-Tai Wang
The present paper describes a new species of freshwater flatworm of the genus Dugesia from Guizhou province, China, based on an integrative approach, combining morphological, histological and molecular information. This new species, Dugesia gemmulata Sun & Wang, sp. nov., is characterized by the ventral part of the most posterior section of the bursal canal being provided with a voluminous, ellipsoidal muscular swelling; sac- or egg-shaped seminal vesicle situated near the ventral body surface in anterior portion of the penis bulb; postero-dorsal wall of seminal vesicle communicating with a narrow duct that first runs almost vertically but then shows a postero-dorsally directed loop before connecting with a small diaphragm; an ejaculatory duct opening terminally or subterminally; an asymmetrical penis papilla, with its dorsal lip being provided with a bump; oviducts opening asymmetrically into female copulatory apparatus, with the left oviduct opening into the common atrium and the right oviduct opening into the vaginal section of the bursal canal. Molecular phylogenetic analyses revealed that the new species belongs to a clade comprising species from the Australasian and Oriental regions, while it shares a sister-group relationship with D. umbonata Song & Wang, 2020, a species characterized by a muscular swelling on the dorsal side of its bursal canal.
本文对贵州淡水扁虫属一新种进行了形态学、组织学和分子生物学的综合研究。这个新种，Dugesia gemulata Sun & Wang, sp. nov.，其特征是囊管最后段的腹侧部有一个巨大的椭圆形肌肉肿胀;位于阴茎球茎前部体表附近的囊状或卵状精囊;精囊后背壁与狭窄的管道连通，该管道最初几乎垂直，但随后在与小隔膜连接之前显示一个后背导向的环;射精管在末端或亚末端开口的射精管;一种不对称的阴茎乳头，其背唇上有一个隆起;输卵管不对称地进入雌性生殖器官，左侧输卵管进入总心房，右侧输卵管进入法囊管阴道段。分子系统发育分析显示，新物种属于一个由澳大利亚和东方地区物种组成的分支，而它与D. umbonata Song & Wang, 2020有姐妹群关系，后者的特征是其法氏囊管背侧有肌肉肿胀。
{"title":"Addition to the known diversity of Chinese freshwater planarians: integrative description of a new species of Dugesia Girard, 1850 (Platyhelminthes, Tricladida, Dugesiidae)","authors":"Yi Liu, Xiao-Yu Song, Zhong-Yin Sun, Wei-Xuan Li, Ronald Sluys, Shuang-Fei Li, An-Tai Wang","doi":"10.3897/zse.98.83184","DOIUrl":"https://doi.org/10.3897/zse.98.83184","url":null,"abstract":"The present paper describes a new species of freshwater flatworm of the genus Dugesia from Guizhou province, China, based on an integrative approach, combining morphological, histological and molecular information. This new species, Dugesia gemmulata Sun & Wang, sp. nov., is characterized by the ventral part of the most posterior section of the bursal canal being provided with a voluminous, ellipsoidal muscular swelling; sac- or egg-shaped seminal vesicle situated near the ventral body surface in anterior portion of the penis bulb; postero-dorsal wall of seminal vesicle communicating with a narrow duct that first runs almost vertically but then shows a postero-dorsally directed loop before connecting with a small diaphragm; an ejaculatory duct opening terminally or subterminally; an asymmetrical penis papilla, with its dorsal lip being provided with a bump; oviducts opening asymmetrically into female copulatory apparatus, with the left oviduct opening into the common atrium and the right oviduct opening into the vaginal section of the bursal canal. Molecular phylogenetic analyses revealed that the new species belongs to a clade comprising species from the Australasian and Oriental regions, while it shares a sister-group relationship with D. umbonata Song & Wang, 2020, a species characterized by a muscular swelling on the dorsal side of its bursal canal.","PeriodicalId":48677,"journal":{"name":"Zoosystematics and Evolution","volume":"22 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138542987","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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