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Registros recuperados: 237
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A crinoid crown from the Wenlock (Silurian) of Coalbrookdale, Shropshire, England Naturalis
Donovan, S.K.; Lewis, D.N..
The specific diversity of fossil crinoids from the Much Wenlock Limestone Formation at Dudley, Worcestershire, and in Shropshire differ by an order of magnitude. The latter are relatively depauperate and include only about six nominal species. Over 165 years ago, a specimen from Coalbrookdale, Shropshire, was identified as Cyathocrinites tuberculatus Miller (= the taxocrinid flexible Protaxocrinus tuberculatus (Miller)). This specimen, although indifferently preserved, is distinct from other Silurian crinoids of the British Isles and is described herein as a monobathrid camerate, Macrostylocrinus? jefferiesi sp. nov. This species has a moderately large, conical dorsal cup with at least 20 arms, broad primibrachials, a granular surface sculpture and no ray...
Tipo: Article / Letter to the editor Palavras-chave: Systematics; Crinoids; Macrostylocrinus; Wenlock; Silurian; England; 42.72; 38.22.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/314207
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A distinctive new cloud-forest rodent (Hystricognathi: Echimyidae) from the Manu Biosphere Reserve, Peru Mastozool. neotrop.
Patterson,Bruce D.; Velazco,Paul M..
Recent surveys in Peru 's Manu National Park and Biosphere Reserve uncovered a new species of hystricognath rodent, a spiny rat (Echimyidae) with dense, soft fur. Inhabiting Andean cloud-forests at 1900 m, the new rodent belongs to a radiation of "brush-tailed tree rats" previously known only from the Amazon, Orinoco, and other lowland river drainages. Phylogenetic analysis of morphology (cranial and dental characters) unambiguously allies the new species with species of Isothrix. While the inclusion of the new taxon does not resolve the "star phylogeny" which underlies the echimyid radiation, it identifies the Andes as a possible theatre for the evolution of some soft-haired members of the group. The new species is described and a revised diagnosis of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Andes; Morphology; Phylogenetics; Species description; Systematics.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832006000200002
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A fissitunicate ascus mechanism in the Calosphaeriaceae, and novel species of Jattaea and Calosphaeria on Prunus wood Naturalis
Damm, U.; Crous, P.W.; Fourie, P.H..
During a survey of Prunus wood from South Africa, isolations were made of three presumably Calosphaerialean fungi that formed hyphomycetous, phialidic anamorphs in culture. In order to reveal the phylogenetic relationship of these fungi, they were characterised on a morphological and molecular (LSU and ITS rDNA) basis. Two isolates that formed a teleomorph in culture are newly described as Calosphaeria africana sp. nov. Although asci of Calosphaeria are characterised by having non-amyloid apical rings, two functional wall layers were observed in asci of C. africana, which has hitherto not been observed in any member of the Calosphaeriaceae. However, Calosphaeriaceae (Calosphaeriales, Sordariomycetes) are not closely related to other bitunicate fungi like...
Tipo: Article / Letter to the editor Palavras-chave: Apical ring; Ascospore discharge; Ascus dehiscence; Beta-tubulin; Calosphaeria; Calosphaeriaceae; ITS; Jattaea; LSU; Phialophora; Prunus; SSU; Systematics.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/531626
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A new Aspidoras (Siluriformes: Callichthyidae) from rio Paraguaçu basin, Chapada Diamantina, Bahia, Brazil Neotropical Ichthyology
Britto,Marcelo R.; Lima,Flávio C. T.; Santos,Alexandre C. A..
During a recent ichthyological survey in Chapada Diamantina, Estado da Bahia, Brazil, a new, very distinctive Aspidoras was discovered in tributaries of the upper rio Paraguaçu. The new taxon differs from its congeners mainly in having: a poorly-developed pigmentation pattern, restricted to minute scattered blotches on dorsal region of head and body, but grouped in small, irregular blotches along the lateral body plate junction; four or five caudal vertebra, anterior to compound caudal centrum, with neural and haemal spines placed posteriorly, close to post-zygapophyses; and post-zygapophyses of the precaudal vertebrae without dorsal expansions connected with their respective neural spines. The new species shares with Aspidoras velites dorsolateral body...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Systematics; Aspidoras maculosus; Sand-dwelling; Paedomorphic characters.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000400004
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A new classification of the Xanthoidea sensu lato (Crustacea: Decapoda: Brachyura) based on phylogenetic analysis and traditional systematics and evaluation of all fossil Xanthoidea sensu lato Naturalis
Karasawa, H.; Schweitzer, C.E..
A phylogenetic analysis was conducted including representatives from all recognized extant and extinct families of the Xanthoidea sensu lato, resulting in one new family, Hypothalassiidae. Four xanthoid families are elevated to superfamily status, resulting in Carpilioidea, Pilumnoidoidea, Eriphioidea, Progeryonoidea, and Goneplacoidea, and numerous subfamilies are elevated to family status. The Mathildellidae is moved from the Goneplacidae to the Portunoidea. Diagnoses for all superfamilies and families discussed herein are provided, embracing characters typically used by biologists as well as readily fossilized features of the dorsal carapace, sternum, abdomen, and chelipeds. All genera known from the fossil record at one time referred to the Xanthidae...
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Decapoda; Brachyura; Xanthoidea; Portunidae; Systematics; Phylogeny; 42.74.
Ano: 2006 URL: http://www.repository.naturalis.nl/record/210768
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A new deep-sea genus of nannastacidae (Crustacea, cumacea) from the lucky strike hydrothermal vent field (Azores triple junction, mid-atlantic ridge) ArchiMer
Corbera, J; Segonzac, Michel; Cunha, M.
A new cumacean genus and species, Thalycrocuma sarradini gen. et sp. nov., belonging to the family Nannastacidae is described from several sites of the Lucky Strike hydrothermal vent field (Mid-Atlantic Ridge, 37N, 1700 m depth). The new genus differs from others in the family by males lacking exopods on the pereopods 3 and 4 and having an antenna with a five-articulate peduncle and a short flagellum. This is the first cumacean species that could be considered, at the moment, as endemic from hydrothermal vent areas. Data on the accompanying fauna including other cumacean species (Cyclaspis longicaudata, Bathycuma brevirostre, Procampylaspis sp. and Makrokylindrus sp.) and some ecological remarks are included. A key for the currently known genera of the...
Tipo: Text Palavras-chave: Systematics; Morphology; Mid Atlantic Ridge; Hydrothermal vents; Deep sea; Cumacea.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4358.pdf
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A new Scleromystax species (Siluriformes: Callichthyidae) from coastal rivers of southern Brazil Neotropical Ichthyology
Britto,Marcelo R.; Reis,Roberto E..
The recently resurrected callichthyid catfish genus Scleromystax includes species occurring in several Brazilian coastal river basins from southern Bahia to southern Santa Catarina. Several character states, especially those related to sexual dimorphism, demonstrate the monophyly of Scleromystax. Examination of Scleromystax specimens sampled from streams in the Ilha de Santa Catarina and Nova Veneza, and the rio Mampituba basin, Santa Catarina and Rio Grande do Sul States, revealed that they constitute a new taxon, and thus the southernmost record for the genus. Scleromystax salmacis, new species, has coloration similar to that of S. macropterus, differing from that species mainly by the absence of a black spot on the base of the median caudal-fin rays,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Taxonomy; Systematics; Corydoradinae; Catfish.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000400005
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A new short-rostrum odontocete (Mammalia: Cetacea) from the middle Miocene of the Eastern Netherlands Naturalis
Bianucci, G.; Landini, W..
An incomplete odontocete (Mammalia, Cetacea) skull from Middle Miocene Miste Bed (near Winterswijk in the eastern part of The Netherlands) is described as Vanbreenia trigonia, a new genus and species. The skull exhibits a short rostrum with only two maxillary teeth for each toothrow and with narrow and toothless apical portion exclusively formed by the premaxilla. Considering this last character, the specimen could belong to the Eurhinodelphinidae even if a certain attribution is not possible because of the incompleteness of the specimen. Vanbreenia n. gen. could represent a specialized adaptation to bottom suction feeding among the eurhinodelphinids.
Tipo: Article / Letter to the editor Palavras-chave: Cetacea; Odontocete; Systematics; Feeding; Miocene; The Netherlands.
Ano: 2002 URL: http://www.repository.naturalis.nl/record/505053
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A new species of Bryconadenos (Characiformes: Characidae) from the rio Curuá, rio Xingu drainage, Brazil Neotropical Ichthyology
Menezes,Naércio A.; Netto-Ferreira,André Luiz; Ferreira,Katiane M..
A second inseminating species bearing club cells organized into an anal-fin gland in sexually active males belonging to the genus Bryconadenos was recently discovered in the rio Xingu drainage and is described as new. It is distinguished from B. tanaothoros by the presence of a conspicuous dark blotch at the humeral region, and fewer scale rows between dorsal-fin origin and anal-fin origin. Males of B. weitzmani have longer pelvic fins at sizes beyond 30 mm SL. Bryconadenos weitzmani is further distinguished from B. tanaothoros by the cup shape of the anal-fin gland, its lower part much more developed than the upper, whereas in B. tanaothoros there is just a slit separating the almost equally developed upper and lower parts.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater fish; South America; Neotropical; Insemination; Systematics; Taxonomy.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200003
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A new species of Bryophaenocladius (Diptera: Chironomidae) from Argentina Rev. Soc. Entomol. Argent.
Donato,Mariano.
The male of Bryophaenocladius carolinae sp. nov. is described and figured. The species can be separated from all other Neotropical species by having a hyaline, blunt triangular anal point, a comparatively small, sub-rectangular inferior volsella, gonostylus widened medially with an outer heel, R4+5 ending opposite to end of M3+4, setose squama and absence of comb on middle tibia and pseudospurs. A key to the adult males of the Neotropical Bryophaenocladius Thienemann is provided.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Orthocladiinae; Systematics; Neotropics; Key.
Ano: 2011 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802011000200006
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A new species of Echinogammarus Stebbing, 1899 (Crustacea, Amphipoda) from Moroccan freshwaters Naturalis
Fadil, Fatima; Dakki, Mohamed.
Systematic sampling has proved that members of the genus Echinogammarus are known from limited areas of Morocco. In this paper, we describe a new species of Echinogammarus (Crustacea, Amphipoda): Echinogammarus oujdae n. sp. from freshwater of the northeastern region with remarks on its affinities and ecology.
Tipo: Article / Letter to the editor Palavras-chave: Amphipoda; Echinogammarus; Systematics; Freshwater; Morocco.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/504766
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A new species of Glaphyropoma: the first subterranean copionodontine catfish and the first occurrence of opercular odontodes in the subfamily (Siluriformes: Trichomycteridae) Neotropical Ichthyology
Bichuette,Maria Elina; Pinna,Mario César Cardoso de; Trajano,Eleonora.
A new species of the rare copionodontine genus Glaphyropoma is described from subterranean waters in the Diamantina Plateau, Bahia State, central northeastern Brazil. This is the first troglomorphic species in the subfamily Copionodontinae. It is distinguished from all other copionodontines by the presence of opercular odontodes, and further distinguished from its only congener, G. rodriguesi, by the reduction of dark integumentary pigmentation. The new species shares the single synapomorphy previously proposed for Glaphyropoma, the marked narrowing of the first hypobranchial and indirect character evidence also supports its inclusion in the genus. The presence of opercular odontodes in the new species, in combination with a reviewed hypothesis of sister...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Cave fishes; Systematics; Neotropics; Taxonomy.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300002
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A new species of Gymnogeophagus from the río Negro and río Tacuarí basins, Uruguay (Teleostei: Perciformes) Neotropical Ichthyology
González-Bergonzoni,Iván; Loureiro,Marcelo; Oviedo,Sebastián.
The new cichlid species Gymnogeophagus tiraparae is described from the río Negro and río Tacuarí basins (Uruguay). The new species is distinguished from other Gymnogeophagus species by the unique presence of the following characters: adipose hump on head deeper than the dorsal-fin upper border, adipose hump with anterior profile vertical, extending from the upper lip to the dorsal-fin origin, absence of transversal bands on body; two horizontal series of moderately elongated light blue dots between dorsal fin spines, and a series of light blue stripes between soft rays, sometimes merged with the second series of elongated dots, always with a red ground color between series of dots, and caudal fin with dots vertically aligned on its distal border. According...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cichlidae; Systematics; Neotropical.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100003
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A new species of Hyphessobrycon (Teleostei: Characidae) from the upper rio Tocantins drainage, with bony hooks on fins Neotropical Ichthyology
Bertaco,Vinicius A.; Malabarba,Luiz R..
A new species of characid, Hyphessobrycon hamatus, is described from the upper rio Tocantins, Goiás, Brazil. The new species is distinguished from all other Hyphessobrycon species by the presence of bony hooks on dorsal, anal, pelvic, and pectoral fins of males, the two black humeral spots, the 4 or 5 teeth in the inner series of the premaxilla, a maxilla with 2-3 teeth, the iii-v, 16-18 anal-fin rays, and a lateral line with 10-32 perforated scales and 33-35 scales in a longitudinal series.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropical; Hyphessobrycon balbus; Taxonomy; Systematics.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000100004
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A new species of Mesoclemmys, from the open formations of northeastern Brazil (Chelonii, Chelidae) Pap. Avulsos de Zool. (São Paulo)
Bour,Roger; Zaher,Hussam.
A new species of South American side-necked turtle is described from the state of Piauí, Brazil. It is related to the Amazonian species of the genus Mesoclemmys s.l. (new acceptation) and is apparently a biogeographically relictual population of a species formerly living under a more humid climate in northeastern Brazil.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chelonii; Chelidae; Systematics; Taxonomy; Phylogeny; Mesoclemmys perplexa; New species; Piauí; Brazil.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492005002400001
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A new species of Miroculis (Ephemeroptera: Leptophlebiidae) from NE Argentina Rev. Soc. Entomol. Argent.
Domínguez,Eduardo.
The genus Miroculis Edmunds has species described from Brazil, Colombia, Peru, Venezuela and Suriname, with additional records from other countries in northern South America. In this paper, Miroculis (Ommaethus) misionensis sp. nov. is described from male and female imagos from Misiones Province, NE Argentina. This constitutes the Southernmost record for the genus.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Systematics; Taxonomy; Neotropical Region.
Ano: 2007 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802007000200012
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A new species of Neanthes (Annelida, Polychaeta, Nereididae) from Brazil, and some remarks on Neanthes Bruaca Lana & Sovierzoski, 1987 Naturalis
Steiner, Tatiana Menchini; Gomes Santos, Cinthya Simone.
A new species of Nereididae, Neanthes ceciliae n. sp., is described based on a large number of specimens, providing details about morphological variations in juveniles, adults and epitokes. Neanthes ceciliae n. sp. differs from its congeneric species in the number of conical paragnaths and morphology of the parapodia. Neanthes bruaca Lana & Sovierzoski (1987) is redescribed based on type material and additional specimens from São Paulo, Paraná and Santa Catarina. The morphology of the parapodia is detailed and additional characters are added to the diagnosis.
Tipo: Article / Letter to the editor Palavras-chave: Polychaeta; Nereididae; Neanthes; Brazil; Systematics; New species.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/505142
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A new species of Propimelodus Lundberg & Parisi, 2002 (Siluriformes: Pimelodidae) from rio Araguaia, Mato Grosso, Brazil Neotropical Ichthyology
Rocha,Marcelo S.; Oliveira,Renildo R. de; Rapp Py-Daniel,Lúcia H..
A new species of Propimelodus from the middle course of the rio Araguaia is described. Propimelodus araguayae, new species, can be distinguished from its congeners in having a conspicuous black dot on the base of the dorsal-fin rays (vs. a different pattern), large eyes (29.7-34.8% of head length and 62.7-74.7% of snout length vs. 14.5-21.1% and 31-44% in P. caesius and 9.5-19.7% and 17-38% in P. eigenmanni), anal-fin lobe present (vs. absent), premaxillary bone with three irregular rows of teeth (vs. 4-5 in P. caesius and 5-8 in P. eigenmanni), tip of anterior lateral process of basipterygium at the same level as the tip of the anterior medial process (vs. anterior lateral process extending beyond the tip of the anterior medial process), total number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catfish; Systematics; Propimelodus araguayae; Propimelodus eigenmanni; Propimelodus caesius.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300007
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A new species of Pseudoniphargus (Crustacea, Amphipoda) from subterranean water of northeastern Morocco: Historical biogeography and evolutionary aspects Naturalis
Abiari, A. Fakher el; Oulbaz, Z.; Messouli, M.; Coineau, N..
A new species of Pseudoniphargus, P. longiflagellum (Crustacea, Amphipoda) is described from subterranean fresh water of the Riftan region of Morocco. This species is closely related to the group P. ruffoi-P. longipes, which shares several apomorphic characters. The two-step model of colonization and evolution provides an understanding of the origin and the age of this stygobiont. P. longiflagellum is derived from marine ancestors that lived in the coastal groundwater of the Tethyan South-Rifian channel during the Miocene Tortonian period. The regression of this corridor during the late Tortonian period or at the beginning of the Messinian period may have played a major role in the evolutionary history through vicariance.
Tipo: Article / Letter to the editor Palavras-chave: Systematics; Historical biogeography; Crustacea; Groundwater Amphipoda; Pseudoniphargus; Morocco.
Ano: 1999 URL: http://www.repository.naturalis.nl/record/534391
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A new species of sexually dimorphic Pareiorhaphis Miranda Ribeiro, 1918 (Siluriformes: Loricariidae) from the rio Doce basin, Brazil Neotropical Ichthyology
Pereira,Edson H. L.; Vieira,Fábio; Reis,Roberto E..
Pareiorhaphis nasuta, a new neoplecostomine catfish of the family Loricariidae is described. The species was collected from headwaters of the rio Matipó, tributary of the upper rio Doce basin in State of Minas Gerais, Brazil. The new species is readily diagnosed from all remaining congeners by the longer snout and by the smaller orbital diameter. The new species is the first representative of the genus Pareiorhaphis discovered in the rio Doce basin, thus expanding its geographic distribution. A phylogenetic diagnosis for Pareiorhaphis is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater; Taxonomy; Systematics; Neotropical; Catfish.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000400003
Registros recuperados: 237
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