Abstract A new species of Stylaster is described from the oceanic island of Malpelo, Colombian Pacific. This species belongs to the Stylaster Group A, characterized by having cylcosystems uniformly distributed on all branch surfaces. Stylaster malpeloensis n. sp. is most similar to S. venustus (Verrill, 1870) by its pink coralla and number of dactylopores per cyclosystem, but S. venustus has much more delicate branches and gastropore tubes with a well-developed ring palisade. S. malpeloensis is the first known record of a Stylaster species for the Colombian Pacific and the most southern Stylaster Group A species in the eastern Pacific.
摘要报道了哥伦比亚太平洋马尔佩洛岛的一新种。本种属于针枝属A群，其特征是在所有枝面上具有均匀分布的循环系统。malpeloensis n. sp.与S. venustus (Verrill, 1870)最相似的是其粉红色的花冠和每个环系统的指状孔数量，但S. venustus具有更精致的分支和腹孔管，具有发育良好的环形栅栏。S. malpeloensis是哥伦比亚太平洋地区已知的首个针蝗物种，也是东太平洋地区最南部的针蝗a群物种。
{"title":"A new species of Stylaster (Cnidaria: Hydrozoa: Stylasteridae) from Malpelo Island, Colombian Pacific","authors":"L. Lizcano-Sandoval, S. Cairns","doi":"10.2988/18-00003","DOIUrl":"https://doi.org/10.2988/18-00003","url":null,"abstract":"Abstract A new species of Stylaster is described from the oceanic island of Malpelo, Colombian Pacific. This species belongs to the Stylaster Group A, characterized by having cylcosystems uniformly distributed on all branch surfaces. Stylaster malpeloensis n. sp. is most similar to S. venustus (Verrill, 1870) by its pink coralla and number of dactylopores per cyclosystem, but S. venustus has much more delicate branches and gastropore tubes with a well-developed ring palisade. S. malpeloensis is the first known record of a Stylaster species for the Colombian Pacific and the most southern Stylaster Group A species in the eastern Pacific.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/18-00003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41548421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Ophioconis claviculata sp. nov. is described on the basis of three specimens collected from Ryukyu Islands, southwestern, Japan. The new species is distinct in having: disc covered by granules; four, sometimes five flat, polygonal oral papillae on each side of jaw; broad and flat teeth with hyaline distal end; spiniform and conical arm spines, two times longer than the corresponding arm segment at the maximum length; oralmost arm spines on proximal portion of arms flattened and clavate; four tentacle scales on third tentacle pore; and ventral arm plate longer than wide, with concentrate lamellar striations. The new species was found under rocks of open water as well as in a dark and medium to low salinity (28 ppt) environment of submarine cave, suggesting that this species tolerate this specific condition.
{"title":"A new species of Ophioconis (Echinodermata: Ophiuroidea) from Ryukyu Islands, southwestern Japan","authors":"M. Okanishi, Y. Fujita","doi":"10.2988/18-00001","DOIUrl":"https://doi.org/10.2988/18-00001","url":null,"abstract":"Abstract Ophioconis claviculata sp. nov. is described on the basis of three specimens collected from Ryukyu Islands, southwestern, Japan. The new species is distinct in having: disc covered by granules; four, sometimes five flat, polygonal oral papillae on each side of jaw; broad and flat teeth with hyaline distal end; spiniform and conical arm spines, two times longer than the corresponding arm segment at the maximum length; oralmost arm spines on proximal portion of arms flattened and clavate; four tentacle scales on third tentacle pore; and ventral arm plate longer than wide, with concentrate lamellar striations. The new species was found under rocks of open water as well as in a dark and medium to low salinity (28 ppt) environment of submarine cave, suggesting that this species tolerate this specific condition.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/18-00001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45704481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The results of over 100 years of inventory work on the Lepidoptera of Plummers Island, Montgomery County, Maryland, U.S.A., were summarized recently in a volume dedicated to the invertebrate fauna of that site. That work documented a cumulative total of 836 species of Lepidoptera. To that list I add 20 species: Niditinea sabroskyi Metz, Davis & Davis, 2018 (Tineidae), Tinea carnariella Clemens, 1859 (Tineidae), Tinea apicimaculella Chambers, 1875 (Tineidae), Elachista illectella (Clemens, 1860) (Elachistidae), Pseudocherlaria walsinghami Dietz, 1900 (Gelechiidae), Coleotechnites thujaella (Kearfott, 1903) (Gelechiidae), Coleotechnites quercivorella (Chambers, 1872) (Gelechiidae), Trypanisma prudens Clemens, 1860 (Gelechiidae), Abrenthia cuprea Busck, 1915 (Glyphipterigidae), Argyresthia oreasella Clemens, 1860 (Argyresthiidae), Aethes terriae Sabourin & Miller, 2002 (Tortricidae), Aethes razowskii Sabourin & Miller, 2002 (Tortricidae), Aethes sexdentata Sabourin & Miller, 2002 (Tortricidae), Aethes mymara Razowski, 1997 (Tortricidae), Aethes promptana (Robinson, 1869), (Tortricidae), Spinipogon resthavenensis Metzler & Sabourin, 2002 (Tortricidae), Clepsis listerana (Kearfott, 1907) (Tortricidae), Gretchena amatana Heinrich, 1923 (Tortricidae), Rhopobota finitimana (Heinrich, 1923) (Tortricidae), and Exelastis pumilio (Zeller, 1873) (Pterophoridae). Ten of the species are represented by historical records that previously were overlooked, the other 10 species have been collected since 1998.
{"title":"New records of Microlepidoptera (Insecta: Lepidoptera) from Plummers Island, Maryland, U.S.A., with comments on Lepidoptera inventories","authors":"John W. Brown","doi":"10.2988/18-00005","DOIUrl":"https://doi.org/10.2988/18-00005","url":null,"abstract":"Abstract The results of over 100 years of inventory work on the Lepidoptera of Plummers Island, Montgomery County, Maryland, U.S.A., were summarized recently in a volume dedicated to the invertebrate fauna of that site. That work documented a cumulative total of 836 species of Lepidoptera. To that list I add 20 species: Niditinea sabroskyi Metz, Davis & Davis, 2018 (Tineidae), Tinea carnariella Clemens, 1859 (Tineidae), Tinea apicimaculella Chambers, 1875 (Tineidae), Elachista illectella (Clemens, 1860) (Elachistidae), Pseudocherlaria walsinghami Dietz, 1900 (Gelechiidae), Coleotechnites thujaella (Kearfott, 1903) (Gelechiidae), Coleotechnites quercivorella (Chambers, 1872) (Gelechiidae), Trypanisma prudens Clemens, 1860 (Gelechiidae), Abrenthia cuprea Busck, 1915 (Glyphipterigidae), Argyresthia oreasella Clemens, 1860 (Argyresthiidae), Aethes terriae Sabourin & Miller, 2002 (Tortricidae), Aethes razowskii Sabourin & Miller, 2002 (Tortricidae), Aethes sexdentata Sabourin & Miller, 2002 (Tortricidae), Aethes mymara Razowski, 1997 (Tortricidae), Aethes promptana (Robinson, 1869), (Tortricidae), Spinipogon resthavenensis Metzler & Sabourin, 2002 (Tortricidae), Clepsis listerana (Kearfott, 1907) (Tortricidae), Gretchena amatana Heinrich, 1923 (Tortricidae), Rhopobota finitimana (Heinrich, 1923) (Tortricidae), and Exelastis pumilio (Zeller, 1873) (Pterophoridae). Ten of the species are represented by historical records that previously were overlooked, the other 10 species have been collected since 1998.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47963274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
José Andrés Pérez-García, Yarima Díaz-Delgado, E. García‐Machado, A. Martínez-García, Brett C. Gonzalez, K. Worsaae, M. Armenteros
Abstract The diversity and ecology of meiofauna in caves is largely unknown. Therefore, we studied one anchialine and five freshwater caves in November 2014 and January 2016 in western Cuba. We recorded 10 invertebrate taxa with the most abundant being: Nematoda, Ostracoda, Acari and Copepoda. The meiofauna communities in the caves were relatively impoverished probably due to the combination of oligotrophic conditions and limited colonization by organisms from outside. We found 28 nematode taxa of which 23 never have been previously reported inhabiting caves. The previously exclusive marine genera Desmodora and Paralongicyatholaimus were reported for the first time in freshwater environments. Ironus cf. ignavus was the most abundant species in agreement with studies elsewhere. In freshwater caves, water runoff and organism dispersal from the surface likely determines the colonization of the sediment. Parthenogenetic and predatory/omnivore nematodes dominated in the studied caves probably due to the physical isolation and oligotrophy in the underground systems.
{"title":"Nematode diversity of freshwater and anchialine caves of Western Cuba","authors":"José Andrés Pérez-García, Yarima Díaz-Delgado, E. García‐Machado, A. Martínez-García, Brett C. Gonzalez, K. Worsaae, M. Armenteros","doi":"10.2988/17-00024","DOIUrl":"https://doi.org/10.2988/17-00024","url":null,"abstract":"Abstract The diversity and ecology of meiofauna in caves is largely unknown. Therefore, we studied one anchialine and five freshwater caves in November 2014 and January 2016 in western Cuba. We recorded 10 invertebrate taxa with the most abundant being: Nematoda, Ostracoda, Acari and Copepoda. The meiofauna communities in the caves were relatively impoverished probably due to the combination of oligotrophic conditions and limited colonization by organisms from outside. We found 28 nematode taxa of which 23 never have been previously reported inhabiting caves. The previously exclusive marine genera Desmodora and Paralongicyatholaimus were reported for the first time in freshwater environments. Ironus cf. ignavus was the most abundant species in agreement with studies elsewhere. In freshwater caves, water runoff and organism dispersal from the surface likely determines the colonization of the sediment. Parthenogenetic and predatory/omnivore nematodes dominated in the studied caves probably due to the physical isolation and oligotrophy in the underground systems.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/17-00024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46609025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Taxonomic relationships in genus Berylmys (B. bowersi, B. mackenziei, B. manipulus, B. berdmorei) have traditionally been ambiguous and made difficult by their geographically disjunct and scattered populations. Several specimens held in museum collections are still of unknown or disputed species assignations. Nor have cranial characters in this genus been tested for significance in variance or for usefulness in separating species. Appropriate species identifications are important for any museum-based study of phylogeny, phylogeography, population biology, functional morphology, or conservation. This study tested diagnostic characters and species assignments on one-hundred two specimens of Berylmys housed in American Museum of Natural History (AMNH), Smithsonian Museum of Natural History (NMNH), and Field Museum of Natural History (FMNH) collections. Discriminant function (DFA), principal components (PCA), and linear regression were used to analyze sixteen morphometric measurements. DFA correctly assigned >90% of specimens to their predefined species group. Length of palate (PL) and auditory bulla (LAB), length (RL) and depth of rostrum (RD), and breadth of incisive foramina (BIF) were the best discriminators among species. Six specimens of B. bowersi were re-classified as B. mackenziei, and two B. mackenziei were re-classifed as B. bowersi. One specimen of B. bowersi, of unknown locality, is indicative of Malaysian affinity under DFA.
Berylmys属(B. bowersi, B. iei, B. manipulus, B. berdmorei)的分类关系由于地理上的脱节和分散而变得模糊和困难。博物馆收藏的一些标本仍然是未知的或有争议的物种分配。在这个属中也没有测试颅性状在变异上的显著性或在分离种方面的有用性。适当的物种鉴定对于任何基于博物馆的系统发育、系统地理学、种群生物学、功能形态学或保护研究都是重要的。本文对美国自然历史博物馆(AMNH)、美国史密森尼自然历史博物馆(NMNH)和美国菲尔德自然历史博物馆(FMNH)收藏的102个Berylmys标本进行了诊断特征和物种分配测试。判别函数(DFA)、主成分(PCA)和线性回归分析了16个形态计量学测量值。DFA正确地将90%的标本分配到他们预定的物种组。腭长(PL)和听球长(LAB)、喙长(RL)和喙深(RD)、锐孔宽度(BIF)是物种间最好的鉴别指标。6个布氏白僵菌标本被重新分类为布氏mackenzie白僵菌，2个布氏白僵菌被重新分类为布氏白僵菌。一个地点不明的B. bowersi标本表明在DFA下与马来西亚有亲缘关系。
{"title":"PCA and DFA as multivariate tools to resolve ambiguous species relationships in museum collections","authors":"K. Tuttle","doi":"10.2988/17-00020","DOIUrl":"https://doi.org/10.2988/17-00020","url":null,"abstract":"Abstract Taxonomic relationships in genus Berylmys (B. bowersi, B. mackenziei, B. manipulus, B. berdmorei) have traditionally been ambiguous and made difficult by their geographically disjunct and scattered populations. Several specimens held in museum collections are still of unknown or disputed species assignations. Nor have cranial characters in this genus been tested for significance in variance or for usefulness in separating species. Appropriate species identifications are important for any museum-based study of phylogeny, phylogeography, population biology, functional morphology, or conservation. This study tested diagnostic characters and species assignments on one-hundred two specimens of Berylmys housed in American Museum of Natural History (AMNH), Smithsonian Museum of Natural History (NMNH), and Field Museum of Natural History (FMNH) collections. Discriminant function (DFA), principal components (PCA), and linear regression were used to analyze sixteen morphometric measurements. DFA correctly assigned >90% of specimens to their predefined species group. Length of palate (PL) and auditory bulla (LAB), length (RL) and depth of rostrum (RD), and breadth of incisive foramina (BIF) were the best discriminators among species. Six specimens of B. bowersi were re-classified as B. mackenziei, and two B. mackenziei were re-classifed as B. bowersi. One specimen of B. bowersi, of unknown locality, is indicative of Malaysian affinity under DFA.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/17-00020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44770135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The name Sorex acadicus Gilpin, 1865 is currently recognized as the valid name for the Nova Scotian subspecies of the masked shrew, S. cinereus Kerr, 1792 (Mammalia: Soricidae), but a holotype for the taxon was never designated, and the location of the type series has been a mystery. The authority for this species, John Bernard Gilpin, was associated with the Nova Scotia Museum, Halifax, NS, but that institution has no Gilpin specimens in its possession, and I could find no record of Gilpin shrews in any other Canadian Museum. I recently discovered a series of Gilpin specimens in the Mammal Collection of the National Museum of Natural History, Washington, DC (USNM), some of which may have been part of the original type series of S. acadicus, and I show that these specimens best represent Gilpin's concept of the taxon. From this series, I designate a neotype for S. acadicus. I also evaluate the distinctiveness of Nova Scotian S. c. acadicus compared with S. c. cinereus from Maine, New Brunswick, and New Hampshire and determine that S. acadicus should be considered a junior synonym of S. c. cinereus.
摘要Sorex acadicus Gilpin，1865年的名称目前被认为是蒙面鼩的新斯科舍亚种S.cinereus Kerr，1792（哺乳动物：Soricidae）的有效名称，但该分类单元的正模从未被指定，模式系列的位置一直是个谜。该物种的权威机构约翰·伯纳德·吉尔平（John Bernard Gilpin）与新南威尔士州哈利法克斯的新斯科舍博物馆（Nova Scotia Museum）有关联，但该机构没有吉尔平标本，我在任何其他加拿大博物馆都找不到吉尔平鼩的记录。我最近在华盛顿特区国家自然历史博物馆（USNM）的哺乳动物收藏中发现了一系列吉尔平标本，其中一些可能是S.acadicus原始模式系列的一部分，我表明这些标本最能代表吉尔平的分类单元概念。在这个系列中，我为S.acadicus指定了一个新类型。我还评估了新斯科舍省S.c.acadicus与缅因州、新不伦瑞克省和新罕布什尔州的S.c.cinereus相比的独特性，并确定S.acadicus应被视为S.c.cinreus的初级同义词。
{"title":"Rediscovery of the type series of the Acadian Masked Shrew, Sorex acadicus Gilpin, 1865 (Mammalia: Soricidae), with the designation of a neotype and a reevaluation of its taxonomic status","authors":"N. Woodman","doi":"10.2988/17-00022","DOIUrl":"https://doi.org/10.2988/17-00022","url":null,"abstract":"Abstract The name Sorex acadicus Gilpin, 1865 is currently recognized as the valid name for the Nova Scotian subspecies of the masked shrew, S. cinereus Kerr, 1792 (Mammalia: Soricidae), but a holotype for the taxon was never designated, and the location of the type series has been a mystery. The authority for this species, John Bernard Gilpin, was associated with the Nova Scotia Museum, Halifax, NS, but that institution has no Gilpin specimens in its possession, and I could find no record of Gilpin shrews in any other Canadian Museum. I recently discovered a series of Gilpin specimens in the Mammal Collection of the National Museum of Natural History, Washington, DC (USNM), some of which may have been part of the original type series of S. acadicus, and I show that these specimens best represent Gilpin's concept of the taxon. From this series, I designate a neotype for S. acadicus. I also evaluate the distinctiveness of Nova Scotian S. c. acadicus compared with S. c. cinereus from Maine, New Brunswick, and New Hampshire and determine that S. acadicus should be considered a junior synonym of S. c. cinereus.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/17-00022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44611580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract A detailed description of the caudal skeleton of the Paleogene nasine surgeonfish Arambourgthurus scombrurus is provided herein. The compound (urostylar) centrum is fused with a large, nearly triangular, thick hypural plate, formed by consolidated hypurals 1–4. The compound centrum supports a large autogenous parhypural bearing a thick and blunt hypurapophysis. Hypural 5 is a small triangular bone. There is a single elongate autogenous uroneural and three epurals, the first of which is remarkably stout and elongate, with its proximal end embraced by the open neural arch of the second preural vertebra. The haemal spines of the second and third preural vertebrae are fused to their respective centra. The phylogenetic relationships of Arambourgthurus are discussed. Arambourgthurus shares some features with the Eocene Sorbinithurus and the Miocene Marosichthys, and together they constitute a monophyletic group that represents the sister group of the pair formed by the extant genus Naso and the fossil genus Eonaso. The overall structure of the caudal propulsive unit bears a strong resemblance to that of Luvarus and some of its closely related fossil taxa, and this suggests that Arambourgthurus scombrurus most likely had an oceanic habitat in the epipelagic zone.
{"title":"The caudal skeleton of Arambourgthurus scombrurus (Arambourg, 1967), a Paleogene oceanic surgeonfish","authors":"G. Carnevale, J. C. Tyler","doi":"10.2988/17-00023","DOIUrl":"https://doi.org/10.2988/17-00023","url":null,"abstract":"Abstract A detailed description of the caudal skeleton of the Paleogene nasine surgeonfish Arambourgthurus scombrurus is provided herein. The compound (urostylar) centrum is fused with a large, nearly triangular, thick hypural plate, formed by consolidated hypurals 1–4. The compound centrum supports a large autogenous parhypural bearing a thick and blunt hypurapophysis. Hypural 5 is a small triangular bone. There is a single elongate autogenous uroneural and three epurals, the first of which is remarkably stout and elongate, with its proximal end embraced by the open neural arch of the second preural vertebra. The haemal spines of the second and third preural vertebrae are fused to their respective centra. The phylogenetic relationships of Arambourgthurus are discussed. Arambourgthurus shares some features with the Eocene Sorbinithurus and the Miocene Marosichthys, and together they constitute a monophyletic group that represents the sister group of the pair formed by the extant genus Naso and the fossil genus Eonaso. The overall structure of the caudal propulsive unit bears a strong resemblance to that of Luvarus and some of its closely related fossil taxa, and this suggests that Arambourgthurus scombrurus most likely had an oceanic habitat in the epipelagic zone.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/17-00023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44350478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Two species of haplochromine cichlid fishes of the genus Diplotaxodon Trewavas, endemic to Lake Malaŵi are described: Diplotaxodon longimaxilla, new species, and Diplotaxodon altus, new species. Diplotaxodon altus is diagnosed from other species in the genus based on body depth (35.1–37.8% SL), number of gill rakers (21–26), and a smaller cheek depth (18.2–20.0% HL). Diplotaxodon longimaxilla is delimited from other Diplotaxodon spp. based on body depth (28.9–32.4% SL), horizontal eye diameter (HED 27.1–32.1% HL), smaller cheek depth (15.2–19.4% HL), and number of lateral-line scales (35–38). Other authors have indicated that several other Diplotaxodon spp. occur, but too few specimens were available to permit detailed comparisons. The two new species occur sympatrically at depths of between 40–130 m. Specimens of Diplotaxodon altus were sampled from nets deployed at night using light attraction, while specimens of D. longimaxilla were sampled from nets operated both at night and day. We further examined the three co-types of Diplotaxodon argenteus, the type species of the genus, and designated a lectotype.
{"title":"Description of two deep-water fishes of the genus Diplotaxodon (Teleostei: Cichlidae) from Lake Malaŵi, Africa","authors":"J. R. Stauffer, T. Phiri, A. Konings","doi":"10.2988/PBSW-D-17-00004","DOIUrl":"https://doi.org/10.2988/PBSW-D-17-00004","url":null,"abstract":"Abstract Two species of haplochromine cichlid fishes of the genus Diplotaxodon Trewavas, endemic to Lake Malaŵi are described: Diplotaxodon longimaxilla, new species, and Diplotaxodon altus, new species. Diplotaxodon altus is diagnosed from other species in the genus based on body depth (35.1–37.8% SL), number of gill rakers (21–26), and a smaller cheek depth (18.2–20.0% HL). Diplotaxodon longimaxilla is delimited from other Diplotaxodon spp. based on body depth (28.9–32.4% SL), horizontal eye diameter (HED 27.1–32.1% HL), smaller cheek depth (15.2–19.4% HL), and number of lateral-line scales (35–38). Other authors have indicated that several other Diplotaxodon spp. occur, but too few specimens were available to permit detailed comparisons. The two new species occur sympatrically at depths of between 40–130 m. Specimens of Diplotaxodon altus were sampled from nets deployed at night using light attraction, while specimens of D. longimaxilla were sampled from nets operated both at night and day. We further examined the three co-types of Diplotaxodon argenteus, the type species of the genus, and designated a lectotype.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/PBSW-D-17-00004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47764317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The collection of fishes made by Captain John M. Dow of the Panama Railroad Company represents one of the earliest and most important collection of fishes from the Pacific coast of Central America. There are 133 entries in the Division of Fishes catalog attributed to Dow, of which 81 can currently be located. These represent some 61 species and include 29 types. The material is summarized, catalog numbers and sizes are given, and the current condition of each specimen is assessed. Missing specimens are summarized, with as much information on each as is available. Photographs of 21 of the type specimens are included.
{"title":"Fishes collected by Captain John M. Dow mainly on the Pacific coast of Central America (1861–1865) and deposited in the National Museum of Natural History, Smithsonian Institution","authors":"D. Smith","doi":"10.2988/17-00026","DOIUrl":"https://doi.org/10.2988/17-00026","url":null,"abstract":"Abstract The collection of fishes made by Captain John M. Dow of the Panama Railroad Company represents one of the earliest and most important collection of fishes from the Pacific coast of Central America. There are 133 entries in the Division of Fishes catalog attributed to Dow, of which 81 can currently be located. These represent some 61 species and include 29 types. The material is summarized, catalog numbers and sizes are given, and the current condition of each specimen is assessed. Missing specimens are summarized, with as much information on each as is available. Photographs of 21 of the type specimens are included.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/17-00026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43027217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The tantulocaridan family Cumoniscidae Nierstrasz & Brender à Brandis, 1923, (type genus: Cumoniscus Bonnier, 1903), is the senior subjective synonym of Deoterthridae Boxshall & Lincoln, 1987 (type genus: Deoterthron Bradford & Hewitt, 1980), as both type genera are considered to belong to the same family-level taxon. Issues regarding the priority of Cumoniscus Bonnier, 1903, over Cumoniscus Bonnier, in Lo Bianco, 1903, are also discussed.
{"title":"Recognition of Cumoniscidae Nierstrasz & Brender à Brandis, 1923, as the senior subjective synonym of Deoterthridae Boxshall & Lincoln, 1987 (Crustacea: Tantulocarida)","authors":"C. Boyko, G. Boxshall","doi":"10.2988/17-00029","DOIUrl":"https://doi.org/10.2988/17-00029","url":null,"abstract":"Abstract The tantulocaridan family Cumoniscidae Nierstrasz & Brender à Brandis, 1923, (type genus: Cumoniscus Bonnier, 1903), is the senior subjective synonym of Deoterthridae Boxshall & Lincoln, 1987 (type genus: Deoterthron Bradford & Hewitt, 1980), as both type genera are considered to belong to the same family-level taxon. Issues regarding the priority of Cumoniscus Bonnier, 1903, over Cumoniscus Bonnier, in Lo Bianco, 1903, are also discussed.","PeriodicalId":54578,"journal":{"name":"Proceedings of the Biological Society of Washington","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2988/17-00029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41274466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：