63 research outputs found

    Lista das espécies de aranhas (Arachnida, Araneae) do estado do Rio Grande do Sul, Brasil

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    Two new species of Phalangopsis Serville, 1831 (Orthoptera: Grylloidea: Phalangopsidae) from Brazilian Amazon Forest

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    We describe here two new species of the genus Phalangopsis Serville, 1831 from the Brazilian Amazon Forest. The male genitalia and the female copulatory papilla were described, and a combination of diagnostic characteristics was given to separate both new species from the other described species. The principal morphological characteristics of this genus were discussed.Aqui foram descritas duas espĂ©cies novas do gĂȘnero Phalangopsis Serville, 1831 da Floresta AmazĂŽnica brasileira. A genitĂĄlia masculina e a papila copulatĂłria feminina sĂŁo descritas, bem como uma combinação de caracterĂ­sticas diagnĂłsticas para separar ambas as novas espĂ©cies das outras espĂ©cies descritas. As principais caracterĂ­sticas morfolĂłgicas foram discutidas

    Courtship, egg sac construction, and maternal care in Kukulcania hibernalis, with information on the courtship of Misionella mendensis (Araneae, Filistatidae)

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    Morphological and behavioural traits place Filistatidae basally within Araneomorphae, although some features, such as their continuing to moult after reaching adulthood, are reminiscent of mygalomorph spiders. This paper describes the courtship behaviour and other aspects of the reproductive biology of Kukulcania hibernalis and Misionella mendensis, and compares this information with that from related filistatid species and with Mygalomorphae. K. hibernalis has some unique behaviours during courtship (e.g. male lays threads on female web); other behaviours are probably widespread within Filistatidae (e.g. male uses the tarsi and metatarsi of one of his legs to rub the basal sections of the female’s legs and the sides of her cephalothorax). Some other behaviours seem more similar to Mygalomorphae than to those of other, more derived Araneomorphae. These include male construction of a large sperm web, and the positions of male and female facing each other during copulation, with the male holding the female cephalothorax lifted while insertions occur, similar to some mygalomorphs. The adult female K. hibernalis and the first instar spiderlings (outside the egg sac) feed simultaneously on the same prey, but spiderlings are also capable of cooperating during the attack of large prey. The courtship behaviour supports the hypothesis that places Filistatidae basally within Araneomorphae.UCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biologí

    Scorpion incidents, misidentification cases and possible implications for the final interpretation of results

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    Revista do Museu Paulista e(m) capas: identidade e representação institucional em texto e imagem

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    Este artigo propÔe reflexão sobre a escrita da história, a partir de estudo das capas da Revista do Museu Paulista, especialmente durante as gestÔes dos dois primeiros diretores da instituição, quando certa continuidade editorial foi preservada. Tomadas como "fontes", ou seja, objeto de trabalho do historiador, as capas revelam vestígios de processos que permitem reconstruir, em suas dimensÔes históricas, as complexas imbricaçÔes entre a produção da Revista, sua materialidade, e os atos de leitura e interpretação que condicionam e refletem relaçÔes entre produtores de textos e seus leitores nas primeiras décadas do século XX, a partir de São Paulo, onde era editada.This paper offers a reflection about the writing of History, based on the study of Revista do Museu Paulista's covers, noticeably during the term of its two first directors, when a certain editorial continuity was preserved. Taken as "sources", namely as historian subjects, those covers reveal evidences of practices that allow one to reconstitute, in its historic dimensions, the complex connection between the creation of the Revista, its materiality, and the reading and interpretation efforts that condition and reflect liaisons with writers and readers during the first decades of the XXth Century, from São Paulo, where it was published.
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