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Registros recuperados: 193 | |
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Iniesta,Luiz F. M.; Bouzan,Rodrigo S.; Brescovit,Antonio D.. |
ABSTRACT The South American genus Heteropyge Silvestri, 1897 is revised, accommodating now six accepted species. Adults of the poorly known species Heteropyge araguayensis (Schubart, 1947) are described for the first time from near-topotypic material collected near the Araguaia River, state of Mato Grosso, Brazil. In addition, based on recent samplings and on material from Schubart’s collection, H. bidens (Schubart, 1945) is removed from the synonymy of H. cayennophilus (Silvestri, 1897) and revalidated. Both species show significant differences concerning the gonopods and male leg-pair 1. New records and additional data for H. bidens and H. cayennophilus are provided, as well as an updated checklist of the species belonging to Heteropyge. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical region; Spirostreptini; Mato Grosso; Brazil; Millipedes. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100232 |
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Lise,Arno A.; Ott,Ricardo; Rodrigues,Everton N. L.. |
Four new species of the spider genus Cybaeodamus Mello-Leitão, 1938 are described and illustrated: C. meridionalis sp. nov. from Brazil and Argentina, C. taim sp. nov. from Brazil, Argentina and Uruguay, C. brescoviti sp. nov. and C. tocantins sp. nov. from setentrional region of Brazil. For the species Cybaeodamus enigmaticus (Mello-Leitão, 1939), C. lycosoides (Nicolet, 1849) and C. ornatus Mello-Leitão, 1938, new illustrations based on the examination of the types are presented. The species Cybaeodamus nigrovittatus Mello-Leitão, 1941 which the holotype is an immature specimen, C. pallidus (Mello-Leitão, 1943) which the type was not located, C. rastellifer (Mello-Leitão, 1940) and C. scottae Mello-Leitão, 1941, both described upon juvenile specimens,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spiders; Zodariidae; Neotropical region; Taxonomy. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000300005 |
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Mise,Fábio T.; Message,Hugo J.; Pagotto,João P. A.; Goulart,Erivelto. |
ABSTRACT We investigated the fish fauna response to different environmental conditions of urban (three) and rural (seven) streams through biomass/abundance curves and W index of environmental stress. Negative values of W indicate some level of stress, while positive values suggest environments with lower stress. Dissolved oxygen, marginal erosion (both left and right margins), mesohabitat diversity, and percentage of canopy cover were measured to characterize the 10 streams analysed around Maringá city, Southern Brazil. Fish were sampled by electrofishing, then identified and weighed. Results showed negative values of W to the urban streams and positive to the rural. Urban streams showed a tendency to have assemblages of fish with lower biomass and greater... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical region; Biotic indices; Stream ecology; Biodiversity. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100229 |
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Quintela,Fernando Marques; Loebmann,Daniel. |
ABSTRACT Lygophis flavifrenatus Cope, 1862 is a terrestrial dispsadid distributed in subtropical Brazil, Paraguay, Uruguay, and Argentina. Herein, we present data on sexual dimorphism and reproductive biology of this very poorly studied species. A total of 108 specimens (55 females, 50 males, three hatchlings with unidentified sex) from Brazilian states of Rio Grande do Sul, Santa Catarina and Mato Grosso do Sul were analyzed. Sexual dimorphism by size, body dimensions (tail length, head length, head width) and a number of ventral and subcaudal scales is not well marked in the species. Mature females attain the greater size and have a higher number of ventral scales than mature males. Mature males, in turn, presented longer tail, longer and wider head and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural history; Neotropical region; Subtropical domain; Squamata. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100210 |
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Fernandes, J.A.M.; Doesburg, P.H. van; Greve, C.. |
The E. collaris group of Edessa Fabricius, 1803 (Heteroptera: Pentatomidae: Edessinae) is proposed and the species are described, including one new to science. This group includes two South American (Edessa collaris Dallas, 1851 and E. epulo Kirkaldy, 1909) and two Central American species (E. lineigera Stål, 1862 and E. panamensis spec. nov.). E. lineifera Bergroth, 1891, is considered to be a junior synonym of E. collaris Dallas, 1851. The Lectotypes of E. collaris and E. lineigera are designated. |
Tipo: Article / Letter to the editor |
Palavras-chave: Heteroptera; Pentatomidae; Edessinae; Edessa; New species; New synonym; Taxonomy; Neotropical region; 42.75. |
Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/217447 |
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Gumovsky,Alex; Boucek,Zdenek. |
A new genus, Podkova, is described from Brazil to accommodate its type-species P. hirsuta, sp. n. The genus has a peculiar appearance, the main features of which are the small compact body with coarsely pilose dorsal parts of the head and mesosoma, including median part of propodeum, head with sharp frontal carina of horse-shoe shape, delimiting broad facial cavity with rather short antennae, and a sharp occipital carina stretching posteriorly down along hind margins of eyes. By these features, Podkova resembles the genus Alachua Schauff and Boucek, but differs distinctly by having strong frontal carina on the head and the prepectus hardly overlapped by the anterior margin of mesosternum. Possible affinities to some other entedonine genera are discussed. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomy; Description; Neotropical region. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000300010 |
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Sanseverino,Angela M; Trivinho-Strixino,Susana. |
Tanytarsus lenyae sp. n., T. giovannii sp. n., T. fittkaui sp. n. and T. alfredoi sp. n. from São Paulo State (Brazil) are described and diagnosed, the first as adult male and pupa, and the remaining as male, pupa and larva. The species were collected in areas of Cerrado, at the boundaries of São Carlos city. Complete diagnoses and drawings of the species are given. The imagos can be separated from other species of Tanytarsus van der Wulp mainly by differences in the antennal ratio, dorsomedian extension of the eyes, the thorax and wing setation, the shape of anal tergal bands, the anal point armament and the shape of superior volsella, digitus and median volsella. The pupae are characterized by the thoracic horn armament, the arrangement of the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tanytarsini; Neotropical region. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000100010 |
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Santos,Rachel B dos; Lopes,José; Santos,Karen B dos. |
In this work, the survey of simuliid species and the study of their spatial distribution in four streams of a small watershed situated in Londrina, Paraná State, were carried out from January to October 2007. Changes in the species composition of the breeding sites were also checked along the sampling months. Seventeen black fly species were found, being Simulium botulibranchium Lutz, Simulium travassosi d'Andretta & d'Andretta, Simulium anamariae Vulcano, Simulium brachycladum Lutz & Pinto and Simulium metallicum s. l. Bellardi new records for Paraná State. The Canonical Correspondence Analysis showed that the environmental variables most correlated to the species distribution among sample sites were water conductivity and those linked to... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquatic insect; Simulium; Ecology; Neotropical region. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000200022 |
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González-Acuña,Daniel; Vargas,Pamela; Ardiles,Karen; Parra,Luis; Guglielmone,Alberto. |
In order to describe the developmental biology of the tick Argas neghmei Kohls & Hoogstraal under laboratory conditions, 40 females and 40 males were collected from chicken coops located in Calama (II Region, Chile). They were fed on chickens and maintained under two laboratory conditions: one group at 30 ± 5 ºC and 35 ± 5 % RH and another at 27 ± 5 ºC and 80 ± 5 % RH, both at 12: 12 h L:D photoperiod. The ticks were observed daily to determine larval feeding periods, preoviposition, oviposition, egg incubation as well as the frequency of egg laying, number of eggs laid, and percentage of larval hatching. Females did not lay eggs at 80 ± 5% RH, and data on the biology of this tick was obtained only at 35 ± 5% RH. The life cycle of A. neghmei lasted... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical region; Soft tick; Argasidae; Argas neghmei; Life cycle. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000200003 |
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Loboda,Thiago Silva; Carvalho,Marcelo Rodrigues de. |
A systematic revision of the Potamotrygon motoro (Müller & Henle, 1841) species complex in the Paraná-Paraguay basin based on morphological characters was undertaken. Morphological systems analyzed include external morphology, coloration, dermal denticles, and spines, canals of the ventral lateral-line system, and skeletal components. Potamotrygon motoro is widely distributed in the Paraná-Paraguay basin and some of its diagnostic characters are: ocelli present on dorsal disc tricolored, well-defined and evenly distributed, with diameter similar or greater than eye-length; ventral coloration with relatively large whitish central region, with gray or brown area predominant on outer ventral disc margins; dermal denticles well-developed and star-shaped... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Batoidea; Freshwater stingrays; Morphology; Neotropical region; South American river basins; Taxonomy. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400693 |
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Oliveira,Lívia M. A.; Zanata,Angela M.; Tencatt,Luiz F. C.; Britto,Marcelo R.. |
ABSTRACT A new species of Aspidoras from the rio da Dona basin, a small coastal river drainage in Bahia State, is described herein. The new taxon differs from its congeners by presenting infraorbital 1 with well-developed ventral laminar expansion, nuchal plate nearly reaching to or sometimes contacting posterior process of parieto-supraoccipital, anterior tip of nuchal plate just posterior to dorsal margin of first dorsolateral body plate, and blotches on dorsal half of dorsolateral body plates and/or ventral half of ventrolateral body plates fused with midlateral series of blotches, forming three or four enlarged and oblique black blotches. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspidoradini; Bahia; Corydoradinae; Neotropical region; Taxonomy. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100214 |
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Arbour,Jessica H; López-Fernández,Hernán. |
A new species of Guianacara is described from tributaries of the Essequibo River and the rio Branco in Guyana and northern Brazil. Guianacara dacrya, new species, can be diagnosed from all congeners by the possession of a unique infraorbital stripe and by the shape of the lateral margin of the lower pharyngeal jaw tooth plate. Guianacara dacrya can be further distinguished from G. geayi, G. owroewefi, G. sphenozona and G. stergiosi by the possession of a thin midlateral bar, from G. cuyunii by the possession of dusky branchiostegal membranes and from G. oelemariensis by the possession of two supraneurals. This species differs from most congeners by the presence of white spots on the spiny portion of the dorsal fin, the placement of the midlateral spot, the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Geophagini; Guyana; Neotropical region; South America. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100006 |
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Registros recuperados: 193 | |
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