Checklist of the dipterofauna (Insecta) from Roraima, Brazil, with special reference to the Brazilian Ecological Station of Maracá

Roraima is a Brazilian state located in the northern portion of the Amazon basin, with few studies regarding its biodiversity. The Ecological Station of Maracá (Brazil, state of Roraima) harbors the third largest Brazilian pluvial island and is composed of a transitional landscape of savanna and Amazon rainforest components. Despite its ecological importance and strategic localization, few studies covered the dipterofauna of this locality. An updated checklist addressing 41 families of true flies (Diptera) occurring in Roraima is presented based on the literature and the specimens collected during a field expedition that occurred in 2015. This checklist brings several improvements such as new records of 165 taxa to the state of Roraima, 29 taxa to Brazil, and 259 morphotypes, mostly likely representing undescribed species

Ornidia Lepeletier & Serville, 1828 (Diptera, Syrphidae) no Estado do Rio Grande do Sul, Brasil: distribuição e preferência floral

The genus Ornidia (Diptera, Syrphidae) is represented by four described species, three of them are recorded from Brazil. Studies about this group are lacking in Rio Grande do Sul State. This work aims to document and increase the knowlegde around the distribution of the species of Ornidia in Rio Grande do Sul and the flowering plants visited by Ornidia obesa Fabricius, 1775 in Santa Cruz do Sul region. The material deposited at CESC, MCNZ, MCTP, DZUP,MNRJ and MZSP were examined. Presently, two species of Ornidia are represented in Rio Grande do Sul State: O. obesa and O. major. O. obesa showed intra-specific differentiation for body coloring. A key to the identification of the species of Ornidia found in Rio Grande do Sul is provided. O.obesa was flower visitor of 20 plant species. The niche breadth value indicates that the O. obesa ispolilectic, without a well-defined floral preference

Comunidade de Syrphidae (Diptera): diversidade e preferências florais no Cinturão Verde (Santa Cruz do Sul, RS, Brasil) Syrphidae (Diptera) community: diversity and floral preferences in the Green Belt (Santa Cruz do Sul, RS, Brazil)

Objetivou-se investigar a comunidade de Syrphidae, do Cinturão Verde de Santa Cruz do Sul, RS, Brasil, permitindo a obtenção de informações acerca da composição e estrutura desta comunidade, suas preferências florais e interações entre as espécies na utilização de recursos alimentares. Realizaram-se coletas com rede entomológica, entre setembro/2001 a janeiro/2005. Foram capturados 1.283 espécimes de Syrphidae, representados por 88 espécies, distribuídos em 21 gêneros. Eristalinae apresentou o maior número de espécies coletadas, seguida por Syrphinae e Microdontinae. O gênero Palpada Macquart e a espécie P. urotaenia (Curran) foram os mais abundantes. As coletas alcançaram cerca de 80% do que se estima para a área de estudo. Coletaram-se 1.187 sirfídeos (74 espécies) visitantes de 51 espécies de plantas, de 23 famílias, onde Apiaceae e Asteraceae apresentaram o maior número de visitantes. O grau de especialização alimentar variou de acordo com os tipos de flores visitadas. A facilidade do acesso aos recursos florais e a coloração clara das flores são os principais responsáveis pela atração dos sirfídeos em Apiaceae, Asteraceae, Lauraceae, Malvaceae, Meliaceae, Oleaceae, Poaceae e Solanaceae. A diversidade da comunidade de Syrphidae é regulada por interações locais entre as espécies, principalmente entre as condições ambientais e disponibilidade de recursos alimentares.The aim of this study was to investigate the Syrphidae community in the area of the Green Belt of Santa Cruz do Sul, RS, Brazil, as well as to obtain information on the structure and composition of this community, its floral preferences and the interactions between the species in the food resource utilization. The specimens were collected with entomological net, from September/2001 to January/2005. A total of 1.283 syrphid specimens were collected, totaling 88 species distributed in 21 genera. Eristalinae presented the highest number of collected species, followed by Syrphinae and Microdontinae. The genus Palpada Macquart, 1834 and the species P. urotaenia (Curran) were the most abundant. 1.187 syrphids (74 species) were flower visitors of 51 plant species from 23 families, of which Apiaceae and Asteraceae presented the highest number of visitors. The feeding specialization degree varied according to the visited blooming types. The relative easy access to the floral resources with lighter coloration were the main factors regarding the syrphid attraction in the families Apiaceae, Asteraceae, Lauraceae, Malvaceae, Meliaceae, Oleaceae, Poaceae and Solanaceae. The diversity of the syrphid community is regulated by local interactions between the species, mainly between the environmental conditions and the food resources offering

Non-crop habitats modulate alpha and beta diversity of flower flies (Diptera, Syrphidae) in Brazilian agricultural landscapes

Made available in DSpace on 2018-12-11T17:35:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-05-01Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Non-crop habitats play a key role in maintaining functional diversity and ecosystem services in farmland. However, the interplay between beneficial insects and landscape variables has rarely been investigated in Neotropical agroecosystems. We used flower flies as a model group to investigate the effects of landscape attributes on beneficial insects in agroecosystems across a gradient of landscape complexity. We specifically ask: (i) Do the abundance and species richness of flower flies in cereal crops increase with increasing landscape complexity? (ii) Do the effects of landscape variables on local flower fly communities differ between spatial scales? (iii) How do landscape complexity and local factors (crop size, altitude and insecticide applications) affect beta diversity? We sampled flower flies in 54 edges within 18 wheat crops in Paraná State, southern Brazil. The percentage of non-crop habitats, landscape diversity and edge density were the explanatory variables, which were calculated at multiple spatial scales for each landscape. We collected 8340 flower flies, distributed in 12 genera and 52 species. Species richness was positively associated with the percentage of non-crop habitats, but total abundance presented non-clear pattern. However, abundance without the dominant species was also positively associated with the percentage non-crop habitats. Similarly, beta diversity was related to non-crop habitats, suggesting that the reduction in non-crop habitats implies in species loss. We have provided the first insights into the importance of non-crop habitats on the conservation of beneficial insects within Neotropical farmlands. To guarantee high levels of biodiversity within agroecosystems we need to promote the conservation and restoration of non-crop habitats in the surrounding landscapes.Bioscience Institute Department of Ecology Spatial Ecology and Conservation Lab (LEEC) UNESP - Universidade Estadual PaulistaGraduate Program in Agronomy UEL - Universidade Estadual de Londrina, P.O. Box 6001Graduate Program in Entomology UFLA - Universidade Federal de Lavras, P.O. Box 3037Department of Environmental Sciences UFSCAR - Universidade Federal de São Carlos, P.O. Box 676Department of Geosciences UEL - Universidade Estadual de Londrina, P.O. Box 6001Center for Macroecology Evolution and Climate Natural History Museum of Denmark University of Copenhagen, Universitetsparken 15Bioscience Institute Department of Ecology Spatial Ecology and Conservation Lab (LEEC) UNESP - Universidade Estadual PaulistaFAPESP: 2013/50421-2FAPESP: 2014/01594-4CNPq: 312045/2013-1CNPq: 312292/2016-3CAPES: PNPD 2013128