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Navegando por Assunto "Zoologia"

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    Análise cladística e descrição de um novo gênero de Edessinae (Hemiptera, Heteroptera e Pentatomidae)
    (Universidade Federal do Pará, 2016-04-06) NUNES, Benedito Mendes; FERNANDES, José Antônio Marin; http://lattes.cnpq.br/6743352818723245
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    Análise cladística e revisão do subgênero nominal de Edessa (Heteroptera: Pentatomidae: Edessinae)
    (Universidade Federal do Pará, 2017-01-23) SILVA, Valéria Juliete da; FERNANDES, José Antônio Marin; http://lattes.cnpq.br/6743352818723245
    Pentatomidae is the fourth numerous and diverse family of Heteroptera. From Pentatomidae, Edessinae has more than 300 described species. Edessinae is a Neotropical subfamily with nine genera: Edessa Fabricius, 1803, Brachystethus Laporte, 1832, Ascra Say, 1832, Peromatus Amyot & Serville, 1843, Olbia Stål, 1862, Pantochlora Stål, 1870, Doesburgedessa Fernandes, 2010, Paraedessa Silva & Fernandes, 2013 and Grammedessa Correia & Fernandes, 2016, genera with well-defined diagnoses except Edessa which is considered a deposit of species to the subfamily. Edessa has the greatest taxonomical and nomenclatural problems of Edessinae, because it historically has a great confusion with the limits of the genus and subfamily. To solve the problem was proposed the review of Edessa from groups of species and subgenera. Edessa is composed by five subgenera: Aceratodes Amyot & Serville, 1843, Dorypleura Amyot & Serville, 1843, Pygoda Amyot & Serville, 1843, Hypoxys Amyot & Serville, 1843and the nominal subgenus. Among subgenera only the nominal was not reviewed. As Edessa (Edessa) is an “empty taxa”, composed only by the type specie, it were used the characters of the groups of species by Stål (1872) as start point to the delimitation of this subgenus. During the bibliography research was found a mistake in the typification of Edessa, so here the type specie was changed from E. cervus (Fabricius, 1787) to E. antilope (Fabricius, 1798). To recognize and limit Edessa and to create relationship hypothesis among the species was realized a cladistics analysis. It were included the species considered by Stål (loc. cit.) as part of the Edessa group of species, as well as species that possess the characters mentioned by Stål as diagnosis to this group. The data matrix is composed for 111 morphological characters and 85 taxa, 13 of outgroup and 72 of ingroup. For the analysis were realized two weighting schemes: equal and implicit weight of characters with K varying from 3–12, and two types of search: traditional and new technologies. The cladogram with K=8 and traditional search have 763 steps, IC: 19 and IR: 60. Based on this cladogram the subgenus Edessa is composed by 10 species known for the science: E. antilope, E. cervus, E. taurina Stål, 1862, E. ibex Breddin, 1903, E. arabs (Linnaues, 1758), E. cylindricornis Stål, 1872, E. rondoniensis Fernandes & van Doesburg, 2000, E. burmeisteri Fernandes & van Doesburg, 2000, E. cerastes Breddin, 1905 and E. elaphus Breddin, 1905, and six new morphotypes: E. sp. nov. “near flavinernis”, E. sp. nov. “close flavinernis”, E. sp. nov. “near 112”, E. sp. nov. “close 112”, E. sp. nov. “40” and E. sp. nov. “131”. The subgenus Edessa is diagnosed by the mainly green color on dorsal surface; humeral angles at least twice longer than large, black apex of humeral angle posteriorly curved, whole or bifid; embolium contrasting in color to the corium; corium with at least one yellow vein; dorsal rim of pygophore narrow and continuous with the base of posterolateral angles. Also the cladistics analysis suggests the monophyly of Edessinae and polyphyly of Edessa in its current composition. Changes in taxonomical status to genera of Aceratodes, Dorypleura, Pygoda and Hypoxys are corroborated. Peromatus appears with an internal branch in the analysis; it reinforces the necessity to review the genus. Also were recognized and described 13 new group of species to Edessa. Were redescribed species known to the science and described new species to the genus. Nomenclatural problems have been identified, with 11 synonyms proposed and a revalidation of taxon previously in synonymy; lectotypes were designated and a key of identification of species is given.
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    Descrição e notas taxonômicas comparativas das terminálias femininas de espécies de Peckia robineaudesvoidy, 1830 (Diptera, Sarcophagidae) da Amazônia brasileira
    (Universidade Federal do Pará, 2014-04-03) CAMARGO, Sofia Lins Leal Xavier de; CARVALHO FILHO, Fernando da Silva; http://lattes.cnpq.br/7987049452090800; ESPOSITO, Maria Cristina; http://lattes.cnpq.br/2112497575917273
    Description and comparative morphological notes of female terminalia of species of Peckia Robienau-Desvoidy, 1830 (Diptera, Sarcophagidae) from the Brazilian Amazon. In order to contribute and allow specific identification of female of the genus Peckia, the terminalia of 15 species that occurs in Brasilian Amazon are described, illustrated and an identification key to females is given. Besides gena color and the presence of setulae in gena and calypter, the shape of spermathecae and tergite 6 can also be used in the subgenus determination. The sternites 6, 7 and 8, the position of spiracle 6 and the microtrichosity of tergite 6 reveled important to specific identification. The tergite 8 is present only in the species Peckia (Pattonella) intermutans (Walker, 1861). The shape of vaginal plate, a structure present only in four species of subgenus Peckia, differs in shape and can be used to characterize these species. Therefore, a combined analysis of these features of female terminalia is necessary in the species determinationof the females of Peckia. Peckia (Peckia) hilifera (Aldrich, 1916) is recorded for the first time from Brazil.
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    Dez novas espécies de Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini) e três novas combinações
    (Universidade Federal do Pará, 2017-02-21) SOUZA, Alexandre Salgado de; RUIZ, Gustavo Rodrigo Sanches; http://lattes.cnpq.br/3135887179267009
    Ten new species of Amphidraus Simon, 1900 from Brazil are described: A. belzonte sp. nov. (♂), A. bifidus sp. nov. (♂♀), A. caxiuanan sp. nov. (♂), A. draconicaudatus sp. nov. (♂♀), A. janauri sp. nov. (♂), A. loxodontillus sp. nov. (♂), A. mysticetus sp. nov. (♂♀), A. nigrigenu sp. nov. (♂), A. pulvinus sp. nov. (♂) and A. simplex sp. nov. (♂♀). A new diagnosis is proposed for the genus and three new combinations are established for species presently misplaced in Amphidraus: Nebridia parva Mello-Leitão, 1945 = Titanattus parvus (Mello-Leitão, 1945) new comb., Nebridia manni Bryant, 1943 = Truncattus manni (Bryant, 1943) new comb. and Nebridia mendica Bryant, 1943 = Truncattus mendicus (Bryant, 1943) new comb. Several new records for A. santanae Galiano, 1967 are provided, enabling brief comments on the morphological variations founded.
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    Distribuição e abundância de médios e grandes mamíferos na Amazônia central
    (Universidade Federal do Pará, 2015) RAVETTA, André Luís; ALBERNAZ, Ana Luisa Kerti Mangabeira; http://lattes.cnpq.br/1220240487835422
    Medium and large mammals are an important protein source for many human populations, and, depending on the species, their populations may suffer reductions related to hunting and consumption, habitat degradation or both. The distribution and abundance of these animals can vary with the quality and quantity of the surrounding forests (influence of natural and human factors). The study of this variation may help define public policies for the management and conservation of species and to analyze the effectiveness of protected areas. This study aimed at improving the knowledge of the medium and large mammal distribution patterns in order to evaluate a public policy for the western part of the Para State, which was the implementation of Sustainable Forest District of BR-163. In a study case, the geographical distribution of a species of primate, the white marmoset (Mico leucippe) was expanded based on new records for the region. The Maximum Entropy algorithm was used to predict the potential distribution of species based on its potential ecological niche and assist in defining the geographical boundaries for future surveys. The result of this study served as a parameter for reviewing the conservation status of the species, which had its status changed to the category of "Least Concern" in the national and the IUCN Red lists. In the second part of the study population surveys were conducted to identify the factors influencing the pattern of distribution and abundance of medium and large mammals. For this purpose, densities of species were estimated based on linear transects surveys and analyses of the relation between the density distribution and environmental variables, such as temperature, rainfall and altitude, and anthropogenic variables, as a percentage of deforestation, distance to cities and towns, and distance to roads. There was low variation in species abundance along the DFS of the BR-163, and variation in responses depending on the species, but in general there was influence of rainfall (average annual rainfall and rainfall in the dry season) and anthropogenic factors (proximity roads) on density variation. Increment in the sampling 11 effort was analyzed for the most abundant species and has led to increased precision in the density estimation but did not indicate substantial change in the estimate. The relationships found were not strong enough to allow a generalization about the area, but the results establish a parameter for future comparisons, given the good condition of the sampled areas. This was the first study of mammals in the region for that scale, which matched an actual public policy for the region.
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    Ecologia populacional do caranguejo Dissodactylus crinitichelis Moreira, 1901 (Crustacea: Decapoda) e seu hospedeiro Encope emarginata Leske, 1778 (Echinodermata: Clypeasteroidea) no litoral nordestino brasileiro
    (Universidade Federal do Pará, 2015-08-11) CUNHA , Aislan Galdino da; LEITÃO, Sigrid Neumann; http://lattes.cnpq.br/3909059819593169; MONTAG, Luciano Fogaça de Assis; http://lattes.cnpq.br/4936237097107099
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    Efeito do plantio de dendê sobre a diversidade funcional de aves na Amazônia Oriental
    (Universidade Federal do Pará, 2017-03-29) SILVA, Larissa Cardoso; SANTOS, Marcos Pérsio Dantas; http://lattes.cnpq.br/7941154223198901
    Oil palm plantations (Elaeis guineenses, Jacq.) are among the fastest growing agricultural practices in the world, and are among the most disturbing in the landscape in tropical regions and are known to affect species diversity. In this sense, we evaluated the functional diversity of birds in 11 points of palm plantation, 11 in permanent preservation areas (APP), which are portions of ciliary forest that includes the margins of water courses with a width of 10m to 30m of each Side of the stream, and 11 in adjacent forest fragments in the eastern Amazon. To evaluate the effect of palm plantations on the functional diversity (DF) of birds, three functional metrics, functional richness (FRic), functional evenness (FEve) and functional divergence (FDiv) were calculated. To test the response of functional characteristics to environmental conditions, we used RLQ ordering analysis. We recorded 269 bird species, 52 species recorded in palm plantations, 158 in APP and 203 in forest fragments. The FRic was lower in palm plantations when compared to APP and forest fragments. However, the APP did not differ from the forest fragments. Functional evenness did not differ between treatments and the functional divergence was shown to be higher in forest fragments compared to APP and palm. However, there was no difference between palm and APP. The RLQ analysis showed a relationship between traces and environmental variables. This decline in functional diversity shows that the loss of forest species has not been offset by the addition of new, disease tolerant species. We emphasize the importance of the maintenance and preservation of forest fragments and riparian forests (APP) in agricultural areas, and that this is a good conservation strategy within highly endangered regions, such as the Eastern Amazon.
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    Filogenia e história biogeográfica do grupo Callicebus moloch (Primates, Pitheciidae)
    (Universidade Federal do Pará, 2015-01-29) CARNEIRO, Jeferson Costa; SILVA JÚNIOR, José de Sousa e; http://lattes.cnpq.br/4998536658557008; SCHNEIDER, Horacio; http://lattes.cnpq.br/3621033429800270
    Callicebus is a genus of Neotropical primate of the family Pitheciidae. Thirty-two species are currently recognized. They are classified in two subgenera, Torquatus and Callicebus, and five species groups: C. torquatus, C. moloch, C. cupreus, C. donacophilus and C. personatus. The arrangement of subgenera and groups is based on morphology and geographic distributions. The first section, we is introduction to the taxonomy of Callicebus. In the second section, I present an article for submission to the jounrla Primates concerning the chapter presence or absence of a molecular region known as an Alu element. An Alu element is a transposon in the genome of primates Because of this particular characteristic of Alu insertion, I discovered that the C. moloch and C. cupreus groups are closely related and that C. torquatus is the basal group in the genus. In the third section , from a multilocus approach I investigated the phylogenetic relationships of the C. moloch group and the time of diversification between the species, in order to test the hypothesis of formation of the Amazon River basin during the Plio-Pleistocene. Our results support the hypothesis of origin of Amazonian rivers in the last 3 Ma. However, not all diversification events in Callicebus can be explained by the theory of rivers. the results also indicate that the different species groups are derived from a radiation in the Amazonian region at different times during the upper Miocene. The phylogenetic analysis identified a number of potentioal taxa that a number of taxa which the current knowledge of species diversity in Callicebus is underestimated, and that recently diversified species are taxonomically neglected.
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    Fisiologia térmica e vulnerabilidade dos lagartos da Amazônia (Reptilia: Squamata) frente às mudanças climáticas
    (Universidade Federal do Pará, 2017-01-12) URTIAGA, Luisa Maria Viegas Becerra; ÁVILA-PIRES, Teresa Cristina Sauer de; http://lattes.cnpq.br/1339618330655263; QUEIROZ, Helder Lima de; http://lattes.cnpq.br/3131281054700225
    Is predicted that the global warming drive the Earth to an increase of temperature of almost 4.8°C by the end of the XXI century, what may negatively affects the distribution of lizards species, considering that they are ectotherms and depends directly on the environmental temperatures to regulate their body temperatures (Tb). This animals usually present as compensatory response to the thermal stress the restriction of activity time in refuges, to minimize the risk of death by overheating. It is believed that the species’ vulnerability would be inversely proportional to Tb and to the number of hours of activity restriction in refuges (Hr), and directly proportional to the maximum environmental temperature (MET), what means that both heliotherm and thermoconformer lizards should be vulnerable to the climate changes. There are little information available in literature about the biology of Amazonian lizards, although it is the most biodiverse region in the world and house about 210 species of lizards among all its extension. Therefore, the first chapter of this work had as goal to synthetize the knowledge on thermal physiology of these animals and incorporate unpublished data on thermal preferences for some species, besides to characterize their thermoregulation mode and recover the phylogenetic relationships among the characters. The second chapter, in turn, analyzes the persistence/absence status of 29 species, with projections to 2050 and 2070, in order to verify if their vulnerability is in fact associated to Tb, Hr and MET. Fourty-five studies reporting Tbs from 62 species were found, and additional data on Tb, as well as unpublished data on thermal preferences, were collected among 13 localities of Amazonia, encompassing several phytophysiognomies of the biome. Were obtained data on preferred temperature (Tpref), minimum (Vtmin) and maximum (Vtmax) voluntary temperatures and tolerance zone (critical thermals, Ctmin and Ctmax) for 33 species, and performance data (Topt) for 10 species. Tb, Tpref and Vtmin present low phylogenetic signal (K<1), and all variables are correlated, with exception of 1) Topt, which does not present correlation with Ctmax, and 2) Ctmin, which only correlates with Topt. Although shows significant statistical differences, heliotherms and thermoconformers present thermal characters intercalated in the scale of values, demonstrating a continuum between the extreme thermoregulation modes. The use of a species distribution model that mix environmental and physiological data to calculate the potential distribution of species in the present and future, considering a realistic scenario of greenhouse gases’ emissions, allows the verification of the persistence/absence status on 29 species of Amazonian lizards. Three of them, all heliotherms, presents a projection of territorial expansion by 2070. The other 26, presents a projection of reductions in their occurrence area, with heliotherms presenting lower mean values of Hr and higher mean values of Tb than thermoconformers. Has not been verified any pattern of vulnerability related to thermoregulation mode, and the majority of the species present low Tb and/or Hr, agreeing with the hypothesis that relates vulnerability to Tb, Hr and MET. Other eight species were also modeling, but they present issues in the calculation of the potential distribution and thus were not included in the vulnerability analysis. These species are being evaluated by the model’ developers to possible adjustments. Lastly, if the forecasts concretizes, the high occurrence restrictions recovered by the model can reflects a potentially high extinction risk of the species. The result is worrying, even considering the model limitations, and reinforces the need of conservation policies that take into account the effects of climate change on fauna, as well as further studies aimed to improving our understanding about the consequences of the global warming.
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    Novas espécies do gênero Neoxyphinus birabén 1953 (Araneae: Oonopidae) do Brasil
    (Universidade Federal do Pará, 2016-02-28) FEITOSA, Níthomas Mateus das Neves; RUIZ, Gustavo Rodrigo Sanches; http://lattes.cnpq.br/3135887179267009; BONALDO, Alexandre Bragio; http://lattes.cnpq.br/8721994758453503
    Twenty-seven new species of the genus Neoxyphinus are described, all from Brazil, are described, rising the total number of species of the genus to 48. The new species with the respective geographic distribution and known sexes are: N. capiranga sp. nov. (♂♀) from Amazonas, Pará, Mato Grosso and Rondônia; N. caprichoso sp. nov. (♂♀) and N. garantido sp. nov. (♂♀) from Amazonas and Pará; N. crasto sp. nov. (♂♀) from Bahia and Sergipe; N. murici sp. nov. (♂♀ from Alagoas and Sergipe; N. meurei sp. nov. (♀) from Bahia and Mato Grosso; N. belterra sp. nov. (♂♀) from Pará and Mato Grosso; N. ornithogoblin sp. nov. (♂♀), N. sax sp. nov. (♂♀), N. coari sp. nov. (♂♀), N. tucuma sp. nov. (♂♀), N. ducke sp. nov. (♂) and N. carigoblin sp. nov. (♀) from Amazonas; N. almerim sp. nov. (♂), N. mutum sp. nov. (♂♀), N. caxiuana sp. nov. (♂♀), N. cachimbo sp. nov. (♂) and N. jacareacanga sp. nov. (♀) from Pará; N. paraty sp. nov. (♂♀) and N. rio sp. nov. (♂♀) from Rio de Janeiro; N. novalima sp. nov. (♂♀) and N. celluliticus sp. nov. (♂) from Minas Gerais; N. paraiba sp. nov. (♂) and N. simsinho sp. nov. (♂♀) from Paraíba; N. cantareira sp. nov. (♂) from São Paulo; N. cavus sp. nov. (♂) from Espírito Santo and N. stigmatus sp. nov. (♂) from Bahia. A key for identification of all 48 known species of Neoxyphinus is provided and possible monophyletic lineages within the genus are discussed.
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    O peixe boi da Amazônia no baixo Javari, AM - Brasil: conhecimento local, uso de habitat e conservação
    (Universidade Federal do Pará, 2015-06-19) PANTOJA, Tatyanna Mariucha de Araujo; KENDALLl, Sarita; QUEIROZ, Helder Lima de; http://lattes.cnpq.br/3131281054700225
    Trichechus inunguis plays an important role in food webs and dynamics of water bodies where it lives. It’s ecological importance has not stopped the species from suffering a intense process of hunting despite the legal protection since the decade of 60. The observation of the occurrence of the species in parts of the Javari and Quixito rivers, near the county of Atalaia do Norte, and the registers of hunting events in the region led this research. The research aimed to carry out a study on aspects of local knowledge, habitat use and conservation of T. inunguis in order to support the definition of strategies for their conservation in the lower Javari region, Amazonas, Brazil. The first chapter aimed to compare local knowledge and documented scientific knowledge of the Amazon Manatee. In order to achieve this, interviews were conducted with riverine residents of Atalaia do Norte municipality, or communities or isolated houses along stretches of the Javari river, Itacoaí and Quixito. 50 interviews were conducted covering topics as morphology, metabolism and age, breathing, feeding and migration, breeding and intraspecific interactions. The content of the Compared Cognition Tables (CCT) resulted in an average adhesion value of 0.6. This result demonstrates that it is possible to recognize in reports and utterances of the study population, the existence of cognitive codes perfectly capable of dialoguing with scientific knowledge, indicating the possibility of collective construction of measures geared toward the conservation of the species. The second chapter aimed to investigate local knowledge on the occurrence sites of the species. For a year a sampling was conducted at excerpts from Javari rivers, Quixito and Itacoaí to investigate the suitability of using this type of knowledge on measures directed to the study of the species in the wild. In addition, the study has looked to investigate the effect of environmental variables related to the occurrence of T. inunguis in the study area. Therefore, we use Generalized Linear Models (GLM) to model the distribution of T. inunguis using presence and absence data in sites located within the study area and its relation with variables of environmental and anthropogenic order. We recognize, based on the observed results, the potential of local knowledge about the occurrence sites (detection success rate of occurrence of the sites listed as of the occurrence of the species evidence was 37.66%, in contrast to 1.43 % of sites listed as non-occurrence of the manatee). Therefore consider their owners as key elements in the development of ecological studies of the species, and that should be incorporated into protective actions to these animals. The variable components of the model built (EVD ~ SIT + LARG + DIST.ATN + COM + EMB1 + FLOR.ALAG) validate its objective basis. Furthermore, the model demonstrates that the methodology is capable of replication in similar cases. Still, recommendations regarding data collection bearing in mind the intrinsic features of each variable analyzed (geographical configuration of the sampled rivers, use that animals do the flooded forest, effect of sightings closest communities) are made to maximize potential the use of explanatory models the occurrence of the species, thereby creating greater biological reliability of results. The third chapter raised the species mortality data and studied the perception of the region bordering population on it’s conservation. Individuals contacted for the first component of the study were applied questions about the animals, their relationships with other species, the mythical body of knowledge about the species, their uses, the risks to which it is subject, and the threat of its extinction. A survey was done (by direct observation, participant or not) on mortality of manatees in the study area, and the various causes of deaths recorded. To analyze the perception we used the Discourse of the Collective Subject (DCS). Mortality data were recorded and analyzed descriptively. Impressions beforehand to the questions were mostly positive (73%), and even the negative (27%) can base discussions on conservation actions regionally. The data on the risks and T. inunguis mortality brings evidence that the hunting of these animals still occurs materially and locally and this is an aspect that requires further studies in this regard. Studies are recommended regarding population ecology and dynamics of species populations in the area, under the action of an additional source of mortality: the hunting factor.
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    Proposição de um novo gênero de Edessinae (Heteroptera, Pentatomidae)
    (Universidade Federal do Pará, 2015-02-12) CORREIA, André Oliveira; FERNANDES, José Antônio Marin; http://lattes.cnpq.br/6743352818723245
    Edessinae have seven genera, among them Edessa is the largest with more than 250 names proposed and more than 300 species to be described. The diversity resulted in a complex taxonomical history, so Edessa is the genus with more taxonomical and nomenclatural problems in Edessinae. Review the genus in groups of species is the best proposal to organize Edessa and it already resulted in description of two new genera of Edessinae. This study selected three species described by Beddin (1905), in addition to eight new species chosen for morphological characters. A new genus to Edessinae is proposed, uniting species with four black and punctured stripes longitudinal on dorsal surface of the head; humeral angles laterally projected, slightly flattened dorso-ventrally; metasternal process with branches of bifurcation narrow, long, thin in the apex; abdominal trichobothria placed laterally, not aligned with spiracles; gonocoxites 8 and laterotergites 8 always punctured in females; gonocoxites 8 large, subequal in length to laterotergites 9; pygophore with dorsal rim with semicircular excavation, paramere posteriorly projected, genital cup superior process dark, laminar, partially fused to the cup process. Edessa pallicornis, E. bugabensis, E. rorativentris and E. stillativentris are redescribed and transferred to the new genus. E. strigiceps is proposed as junior synonym of Gen. nov. pallicornis. This study gives the first description of males of Gen. nov. bugabensis and Gen. nov. rorativentris. Extended distribution of Gen. nov. bugabensis (Costa Rica), Gen. nov. rorativentris (Brazil), Gen. nov. stillativentris (Colombia). The lectotype of Gen. nov. bugabensis is here designated. Eight new species are described to the new genus: Gen. nov. sp. n. 203a, Gen. nov. sp. n. 203e, Gen. nov. sp. n. 205, Gen. nov. sp. n. 206, Gen. nov. sp. n. 207, Gen. nov. sp. n. 207c, Gen. nov. sp. n. 297 e Gen. nov. sp. n. 297b.
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    Revisão taxonômica do complexo Micrurus spixii Wagler, 1824 (Serpentes, Elapidae)
    (Universidade Federal do Pará, 2016-03-31) NASCIMENTO, Lywouty Reymond de Souza; PRUDENTE, Ana Lúcia da Costa; http://lattes.cnpq.br/1008924786363328
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    Sinopse do grupo salina do gênero Rhagovelia (Insecta: Hemiptera: Veliidae), com descrição de nova espécie e chave de identificação
    (Universidade Federal do Pará, 2014) MAIA , Ariadne Mendonça; FERNANDES, José Antônio Marin; http://lattes.cnpq.br/6743352818723245
    Rhagovelia bentoi sp. nov., from the state of Pará, northern Brazil, is described, illustrated, and compared with other species of the genus. Rhagovelia ephydros (Drake & Van Doesburg) and R. plumbea Uhler are redescribed and recorded for the first time from Brazil. Diagnosis, maps, and an identification key to all species of the salina group are also presented.
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