945 resultados para Reactive species of oxygen


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Ten new species of Apenesia Westwood, 1874, from Brazil, Acre, are described and illustrated. They belong, respectively, to the following species-groups: nitida group, Apenesia lobata sp. nov., A. serrulata sp. nov. and A. subangulata sp. nov.; laevigata group, A. ocullata sp. nov. and A. rostrum sp. nov.; columbana group, A. apicilata sp. nov.; mexicana group, A. triapicalis sp. nov.; brasiliensis group, A. megaventris sp. nov., A. ventosa sp. nov. and A. triangula sp. nov. New geographical records and some morphological data on A. funebris Evans, 1963, A. nitida (Kieffer, 1910) and A. truncaticeps (Kieffer, 1910) are added.

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Six species of Anisepyris Kieffer, 1905 were collected in Cachoeira da Fumaça (Alegre) and Forno Grande (Castelo) State Parks. Two of them are already known: Anisepyris lobatus Santos & Azevedo, 2000 and Anisepyris rectus Santos & Azevedo, 2000. Other four are described as new: Anisepyris attenuatus sp. nov., Anisepyris divisus sp. nov., Anisepyris inconspicuus sp. nov., and A. rotundus sp. nov.; each new species is illustrated. Two uncommon characters for Anisepyris, such as an inconspicuous anterior carina of the pronotum, and a lower mesopleural fovea partially open on the lower margin were observed being both the characters found in A. inconspicuus sp. nov. and only the first character in A. attenuatus sp. nov.

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Traditionally, the Drosophila guarani species group has been divided into two subgroups: the guarani and the guaramunu subgroups. Two, out of the four species included in this research, are members of the guarani subgroup (D. ornatifrons Duda, 1927 and D. subbadia Paterson & Mainland, 1943) and two are included in the guaramunu subgroup (D. maculifrons Duda, 1927 and D. griseolineata Duda, 1927). However, some authors have suggested that D. maculifrons and D. griseolineata are much closer to some species of the Drosophila tripunctata group than to some of the species of the guarani group. To add new data to the matter under dispute, Polyacrylamide Gel Eletrophoresis (PAGE-SDS) was used for the analysis and comparison of protein composition and Random Amplified Polymorphic DNA (RAPD) analysis to find differences in genomic DNA, in addition to the analysis of quantitative morphological characters previously described. Analysis of PAGE-SDS results in a dendrogram that pointed out D. subbadia as being the most distant within the Drosophila guarani group. However, these results were not supported either by RAPD analysis or by the analysis of continuous morphological characters, which supplied the clustering of D. subbadia with D. ornatifrons. Although our data give strong support to the clustering of D. subbadia and D. ornatifrons, none of the dendrograms provided a clade comprising D. maculifrons and D. griseolineata. Thus, this research does not support the traditional subdivision of the D. guarani group into those two subgroups.

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Asphondylia canastrae sp. nov. (Minas Gerais, Delfinópolis), A. sanctipetri sp. nov. (São Paulo, Ribeirão Preto), and Schizomyia tuiuiu sp. nov. (Mato Grosso, Cuiabá) are described. A. canastrae sp. nov. is associated with Hyptis sp. (Lamiaceae), A. sanctipetri sp. nov. with Didymopanax morototoni (Araliaceae), and S. tuiuiu sp. nov. with Bauhinia rufa (Fabaceae). Illustrations of the new species and comments about their systematic position are presented.

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A new genus and new species of Phlebotominae, Edentomyia piauiensis (Diptera, Psychodidae) from a cave in Piauí State, Brazil, are described. This new genus belongs to Phlebotomini, but its inclusion in any subdivision of this tribe depends on further study.

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The genus Orius Wolff, 1811 comprises predatory species, with approximately 70 known species. Informations about the genus in Brazil are scarce. Therefore, the aim of this investigation was to identify Orius species present in four localities in the southeastern Brazil. Samples were taken from several plants, and the material screened in laboratory. The genitalia of both sexes were studied and illustrated. Two species were identified, Orius insidiosus (Say, 1832) and Orius thyestes Herring, 1966. O. insidiosus, the most common species, was collected in all of the localities sampled [Lavras (MG), Holambra, Pindorama and Campinas (SP)]. O. thyestes, registered for the first time in Brazil, occurred only in Lavras (MG) and Pindorama (SP). Some morphologic aspects of these two species are also presented.

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Micropygomyia (Sauromyia) petari sp. nov. (Diptera, Psychodidae, Phlebotominae) from speleological province of the Vale do Ribeira, São Paulo State, Brazil, is described and illustrated. This new taxon belongs to oswaldoi series.

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Bakeriella lata sp. nov. (Brazil, Rondônia), Bakeriella aurata sp. nov. (Brazil, Amazonas) and Bakeriella sulcaticeps sp. nov. (Brazil, Amazonas) are described and illustrated. New geographic records and variation data for B. cristata Evans, 1964, B. floridana Evans, 1964, B. flavicornis Kieffer, 1910, B. incompleta Azevedo, 1994, B. mira Evans, 1997, B. montivaga (Kieffer, 1910), B. olmeca Evans, 1964 and B. subcarinata Evans, 1965 are provided. The male of B. incompleta is described for the first time.

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Lutzomyia chotensis sp. nov. (Diptera, Psychodidae, Phlebotominae) from Cajamarca Department, Peru, is described and its taxonomic position discussed.

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The type material of three species of Polietina Schnabl & Dziedzicki, 1911 was examined. Polietina flavidicincta (Stein, 1904) is redescribed and a lectotype is designated; P. stellata (Couri, 1982) is considered junior synonym of P. flavithorax (Stein, 1904), and for the latter a lectotype is designated. The neotype previously designated is considered invalid.

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Drosophila boraceia sp. nov. is described from a single male specimen collected at the Estação Biológica de Boracéia, Salesópolis, state of São Paulo, Brazil. At first inspection it looks like a species of Drosophila belonging to the fasciola subgroup of the repleta group, mainly because of the fasciola-like pattern of fused spots on the thorax. However, mostly due to the quite distinct structures of the male terminalia, it seems to be more similar to one ungrouped and also spot-thoraxed South American species, Drosophila atalaia Vilela & Sene, 1982. Illustrations of the terminalia are also provided.

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Cylloepus dorvillei sp. nov. is described and illustrated from a first order stream at the Atlantic Forest in Rio de Janeiro State, Brazil. Taxonomic and habitat notes on the new species are presented.

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Egg ultrastructure of two morphologicaly similar species of the Arribalzagia Series, Anopheles (A.) costai Fonseca & Ramos, 1939 and A. (A.) mediopunctatus (Lutz, 1903) are described and illustrated using scanning electron micrographs. Although similar in the adult stage, male genitalia structures and larval and pupal stages, the eggs of these species are distinct. The eggs of A. costai and A. mediopunctatus are compared with that of A. forattinii Wilkerson & Sallum, 1999. Incomplete illustration of egg of A. forattinii is provided for comparison.

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Larvae of Oukuriella Epler, 1986 (Diptera, Chironomidae) inside freshwater sponges are reported for the first time in Brazil.