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1.
Rev. bras. entomol ; 65(3): e20210059, 2021. graf
Article in English | LILACS-Express | LILACS | ID: biblio-1347224

ABSTRACT

ABSTRACT Zygothrica (Diptera: Drosophilidae) is an almost entirely Neotropical genus, with thirteen species found in other biogeographical regions. The genus includes around 130 valid species, of which 54 occur in Brazil. There have been no new descriptions of species of this genus since the 1987s, although a large number of undescribed species are recognized in entomological collections. Here, three species of Zygothrica Wiedemann (1830) are described from Brazil, and figures are presented for external morphology and terminalia.

2.
Rev. bras. entomol ; 65(3): e20210057, 2021. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1341111

ABSTRACT

ABSTRACT The use of robust sample methodologies to estimate the highest number of species with different ecological requirements and traits is essential to the knowledge construction of the biodiversity and to establish wildlife assessment and monitoring programs. Our aims were to study the performance of colored pan traps in the capture of Drosophilidae (Diptera), a method never used for sampling this taxon. During six months, colored pan traps (blue, yellow and white) were tested in three areas in Southern Brazil. We captured 375 individuals of 30 species belonging to four genera of Drosophilidae. The most abundant species were Drosophila lutzii (n=215) p=0.58, Scaptomyza sp. (n=55) p=0.15 and D. bromelioides (n=17) p=0.04, all of them, anthophilous species. All colored pan traps captured a high quantify species of Drosophilidae, mainly anthophilous species.

3.
Rev. bras. entomol ; 56(4): 431-435, Oct.-Dec. 2012. ilus
Article in English | LILACS | ID: lil-662675

ABSTRACT

Drosophila caxiuana sp. nov., Drosophila subgenus, is described and illustrated. This new species was collected in the Amazonian Biome (Caquajó river, Portel, Pará, Brazil) and is an atypical species to the group due the unusual morphology of the male terminalia.


Drosophila caxiuana sp. nov., subgênero Drosophila, é descrita e ilustrada. Essa nova espécie foi coletada no Bioma Amazônico (Rio Caquajó, Portel, Pará, Brasil) e é uma espécie atípica deste grupo devido à morfologia incomum da terminália masculina.

4.
Neotrop. entomol ; 38(6): 786-790, Nov.-Dec. 2009. ilus
Article in English | LILACS | ID: lil-537402

ABSTRACT

O gênero Rhinoleucophenga Hendel compreende 18 espécies nominais e possui distribuição Neotropical e Neártica. Uma nova espécie foi encontrada em coleta realizada em Florianópolis, SC, e é descrita como Rhinoleucophenga joaquina sp. nov. Os espécimes encontrados emergiram de flores de Dyckia encholirioides (Bromeliaceae) coletadas em região de restinga sobre dunas. Este é o primeiro registro da utilização de flores como sítio de oviposição para Rhinoleucophenga.


The genus Rhinoleucophenga Hendel comprises 18 nominal species and has a Neotropical and Nearctic distribution. A new species was found in a collection in Florianópolis, SC, Brazil, and is described as Rhinoleucophenga joaquina sp. nov. The specimens found were reared from flowers of Dyckia encholirioides (Bromeliaceae), collected in a region of restinga on the dunes. The use of flowers as breeding site for Rhinoleucophenga has never been reported before.


Subject(s)
Animals , Drosophilidae/anatomy & histology , Drosophilidae/classification , Brazil
5.
Neotrop. entomol ; 36(6): 848-862, Nov.-Dec. 2007. ilus, graf, tab
Article in English | LILACS | ID: lil-473535

ABSTRACT

The present study aims to characterise the assemblages of Drosophilidae sampled from four sites subject to different levels of urbanisation, in the city of Florianópolis, South Brazil. Five samples were collected between August 2000 and August 2001 and five between August 2002 and August 2003 in each site. A gradual change in the dominant species was observed in the urbanisation gradient, with an increase in relative abundance of exotic species in urban areas. Among the native species, the relative abundance of Drosophila capricorni Dobzhansky & Pavan had an expressive decrease. In the other hand the richness in the low urbanisation site increased, probably due to the presence of urban gardens. The diversity index did not vary significantly among sites, but its correlation with evenness and richness changed.


O presente estudo objetiva caracterizar as assembléias de Drosophilidae amostradas em quatro pontos sujeitos a diferentes níveis de urbanização, na cidade de Florianópolis, Sul do Brasil. Foram realizadas cinco amostragens entre agosto/2000 e agosto/2001 e cinco entre agosto/2002 e agosto/2003 em cada ponto. Uma mudança gradual nas espécies dominantes foi observada no gradiente de urbanização, com acréscimo na abundância relativa das espécies exóticas nas áreas urbanas. Entre as espécies nativas, houve um decréscimo expressivo na abundância relativa de Drosophila capricorni Dobzhansky & Pavan. Por outro lado, a riqueza no ponto de baixa urbanização aumentou, provavelmente devido à presença de áreas verdes na cidade. O índice de diversidade não variou significativamente entre os pontos, mas sua correlação com a eqüitabilidade e a riqueza se alterou.


Subject(s)
Animals , Drosophilidae , Brazil , Drosophilidae/classification , Ecosystem , Population Density , Urbanization
6.
Neotrop. entomol ; 36(3): 356-375, May-June 2007. ilus, tab
Article in English | LILACS | ID: lil-458885

ABSTRACT

A study of the community dynamics of Drosophilidae was carried out in six insular communities and two others on the mainland. Seasonal collections were carried out throughout two years in Santa Catarina State, southern of Brazil. The diversity index calculations show high values when compared with temperate climate communities. The sites on the mainland (Serra do Tabuleiro) presented the highest diversity, which was measured by the Diversity Index (H'). These sites are covered by primary Atlantic Forest and theoretically should have a higher variation of ecological niches. A dendogram showing the similarity between the communities, calculated by Morisita Index, points to a level of similarity equal to 60 percent for all communities. In this diagram, we can see two clades: one on the mainland and the other on the islands. The six island sites are grouped into one clade and separated into two subclades, one including the sites on Santa Catarina Island and the other consisting of the islands adjacent to this last and very much larger one. These groupings show the very important role of the spatial component on the prediction of the structure of the communities. This fact raises the discussion about the high complexity of the Atlantic Forest ecosystem and consequently the unpredictability of its fauna, highlighting the need of its conservation.


Foi realizado um estudo de dinâmica de assembléias de drosofilídeos em seis comunidades insulares e duas continentais em visitas estacionais ao longo de dois anos, em Santa Catarina. Os índices de diversidade foram elevados se comparados com os de assembléias de clima temperado. Com relação ao índice de heterogeneidade de espécies de Shannon-Wiener (H'), os pontos localizados no continente (Serra do Tabuleiro) foram os mais elevados. Esses sítios apresentam Mata Atlântica primária e, teoricamente, deteriam a maior variabilidade de nichos ecológicos. Um dendograma mostrando a similaridade entre as assembléias (medida pelo índice de Morisita), apontou para 60 por cento de similaridade. Nele os pontos continentais e insulares foram os que mais se diferenciaram. Os seis pontos insulares se separam em dois grupos: um que inclui os pontos da Ilha de Santa Catarina, e outro compreendendo as demais ilhas adjacentes a essa ilha maior. Os agrupamentos mostram a importância do componente espacial na previsão da estrutura das comunidades. Esse fato levanta a discussão a respeito da grande complexidade do ecossistema de Mata Atlântica e, conseqüentemente, sua imprevisibilidade, em termos de composição faunística, evidenciando a necessidade de sua conservação.


Subject(s)
Animals , Drosophilidae , Brazil , Population Dynamics
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