Chaves para identifica����o dos g��neros de Elmidae (Coleoptera) ocorrentes no Estado do Rio de Janeiro, Brasil

Chaves ilustradas para identifica����o de larvas e adultos dos g��neros de Elmidae (Coleoptera) ocorrentes no Estado do Rio de Janeiro e localidades vizinhas s��o apresentadas. Para cada g��nero, foram feitas breves caracteriza����es morfol��gicas das formas larvais e adultas.

Cultura Associativa e Estrat��gias de Organiza����o no Rio de Janeiro Imperial:Associa����es de Imigrantes Portugueses na Corte (1860-1889)

Este estudo que ora se apresenta tem como finalidade mais ampla dar continuidade ao processo de expans��o da pesquisa sobre o fen��meno associativo no Brasil, especialmente no Rio de Janeiro da segunda metade do s��culo XIX. O trabalho analisa, em particular, as associa����es beneficentes de imigrantes portugueses na corte imperial, tendo como base documental os registros de cria����o ou reformula����o dos estatutos das associa����es beneficentes de imigrantes criadas na cidade do Rio de Janeiro. A ��nfase recaiu no tratamento das associa����es beneficentes (de ajuda m��tua, socorros m��tuos), entendidas como manifesta����es de solidariedades horizontais, caracter��sticas do per��odo de crise dos mecanismos culturais e pol��ticos de domina����o senhorial

Larvas de Chironomidae ( Diptera) em dep��sitos de folhi��o submerso em um riacho de primeira ordem da Mata Atl��ntica (Rio de Janeiro, Brasil)

Neste estudo investigamos a fauna de larvas de Chironomidae presente em dep��sitos submersos de mat��ria org��nica (folhi��o) em um riacho de primeira ordem na regi��o serrana (cerca de 1100 m) do Estado do Rio de Janeiro. A fauna de Chironomidae do folhi��o submerso foi quantitativamente amostrada durante o outono, inverno, primavera e ver��o. A fragmenta����o do folhi��o foi estimada e a presen��a de folhas, madeira, ra��zes e frutos foi investigada. Foram estudadas varia����es na composi����o da fauna e na estrutura do folhi��o entre as esta����es do ano e levantadas hip��teses acerca de poss��veis fatores que influenciariam os quironom��deos nestes dep��sitos de folhi��o. As subfam��lias Chironominae, Orthocladiinae e Tanypodinae foram encontradas e as participa����es de freq����ncia de cada subfam��lia e g��nero calculadas em cada esta����o. Chironominae e Orthocladiinae foram identificados at�� o n��vel gen��rico, e 23 g��neros foram encontrados. Lauterborniella, Polypedilum e Tanytarsus foram os g��neros mais abundantes. Foi observada uma varia����o na estrutura do folhi��o submerso entre as esta����es do ano, sendo provavelmente influenciada pelas intera����es entre fatores clim��ticos (principalmente precipita����es) e o relevo e seus efeitos na bacia de drenagem. A fauna de Chironomidae tamb��m apresentou mudan��as durante o per��odo estudado, com grupos variando quanto �� participa����o relativa e quanto �� ocorr��ncia entre as esta����es. Os efeitos do clima na vegeta����o e nas caracter��sticas f��sicas do riacho foram discutidos para elucidar suas influ��ncias nos dep��sitos de folhi��o e na fauna de Chironomidae.

Comportamento de abelhas visitantes florais de Lecythis lurida (Lecythidaceae) no norte do estado do Rio de Janeiro

Este estudo descreve e analisa o comportamento dos visitantes florais de L. lurida em fragmentos de mata de tabuleiro. Esta esp��cie mon��ica floresceu de outubro a janeiro. As flores abriram-se entre 5h30 e 10h00 e a antese floral n��o ultrapassou um dia. Durante amostragens padronizadas foram coletadas 172 abelhas visitantes florais, pertencentes a 10 g��neros e 18 esp��cies. As maiores freq����ncias foram de Epicharis flava (42,3%), Xylocopa frontalis (16,3%) e Eufriesea surinamensis (11,6%), com atividade principalmente de 7h00 ��s 11h00. Abelhas Centridini, Euglossina e Xylocopini buscam n��ctar nas flores e foram considerados polinizadores efetivos. Megachile coleta p��len e tamb��m �� potencial polinizador. Oxaea flavescens atuou como pilhador de n��ctar, perfurando o capuz da flor. Experimentos de poliniza����o indicaram aus��ncia de autopoliniza����o espont��nea e baixa taxa de frutifica����o (0,48%) sob condi����es naturais. Como observado para outras esp��cies zigom��rficas de Lecythidaceae, a complexa morfologia floral restringe os visitantes a abelhas de grande porte ou abelhas robustas que conseguem entrar pelo capuz floral. Entretanto, Centridini foi principal grupo de polinizadores de L.lurida, o que difere dos polinizadores indicados em outros trabalhos sobre Lecythis e outros g��neros de Lecythidaceae na regi��o amaz��nica.

Nest distribution and nesting habits of Xylocopa ordinaria Smith (Hymenoptera, Apidae) in a restinga area in the northern Rio de Janeiro State, Brazil

This paper aims to study the distribution of natural nests of Xylocopa ordinaria and characterize its nesting habits in the restinga of Grussai/Iquipari (RJ), supporting future studies on the pollinators management in the northern Rio de Janeiro state. The data obtained from Aug/2003 to Dec/2004, in an area of 11.6ha, were related to the nest distribution, substrate identification and dimensions, emergence, sex ratio, nest structure (n= 23 nests) and pollen content analysis of provisioning masses and feces. X. ordinaria nests were abundant and presented a clustered distribution. These bees do not present taxonomical affinity for nesting substrates, but preferences for wood availability and characteristics, being Pera glabrata the main substrate. X. ordinaria is a multivoltine species that tolerates co-specifics in their nests. These bees were generalist on their nectar and pollen consumption, but presented floral constancy while provisioning brood cells. These behaviors, activity along the year, flights throughout the day, and legitimate visits to flowers indicate the importance of X. ordinaria on the pollination of plants in the restinga.

Flebotom��neos de ��reas com notifica����es de casos aut��ctones de leishmaniose visceral canina e leishmaniose tegumentar americana em Angra dos Reis, Rio de Janeiro, Brasil

Fleb��tomos de ��reas com notifica����es de casos aut��ctones de leishmaniose visceral canina e leishmaniose tegumentar americana em Angra dos Reis, Rio de Janeiro, Brasil. O munic��pio de Angra dos Reis apresenta casos humanos de leishmaniose tegumentar americana desde 1945. Inqu��ritos flebotom��nicos realizados em 1978 revelaram a presen��a de Nyssomyia intermedia e a primeira notifica����o de Lutzomyia longipalpis no Rio de Janeiro, Ilha Grande, Angra dos Reis. Em agosto de 2002 foi notificado o primeiro caso canino de leishmaniose visceral na Ilha Grande, Angra dos Reis. Inqu��ritos flebotom��nicos realizados nos peridomic��lios, no per��odo de novembro de 2002 a maio de 2003, em quatro localidades de Angra dos Reis, resultaram em 12.554 flebotom��neos e a presen��a de nove esp��cies: Brumptomyia sp.; Nyssomyia intermedia, Migonemyia migonei, Micropygomyia schreiberi, Pintomyia fischeri, Psychodopygus davisi, Psychodopygus ayrosai, Evandromyia tupinambay, Psathyromyia pelloni. foi Nyssomyia intermedia, predominante em todas as localidades, seguida por M.migonei. O principal vetor da LVA, Lutzomyia longipalpis, n��o foi detectado nas localidades, incluindo ��reas do entorno, onde um c��o infectado residia.

An��lise faun��stica de Calliphoridae (Diptera) da Reserva Biol��gica do Tingu��, Nova Igua��u, Rio de Janeiro

O presente estudo investiga a fauna de califor��deos na Reserva Biol��gica do Tingu�� usando como meios os ��ndices faun��sticos. Realizaram-se coletas mensais com armadilhas contendo sardinha expostas por 48 horas, nos pontos: A- borda da mata; B- 1000 metros para interior da mata; C- 500 metros para interior da mata. Objetivou-se estudar a entomofauna califor��dica em ambiente florestal atrav��s de ��ndices faun��sticos. Foram coletadas 26 esp��cies de califor��deos ao longo do experimento. Definiram-se esp��cies Singletons, Doubletons, Uniques e Duplicates, intermedi��rias e comuns; calcularam-se riqueza e proje����o da riqueza (estimadores Chao 1 e 2, Jackknife 1 e 2, Ace, Ice e Bootstrap); diversidade (��ndice Shannon-Wiener); equidade (��ndice Pielou) e similaridade dos pontos (quociente Sorensen e porcentagem de similaridade Southwood). Os pontos A e B mostraram o mesmo n��mero de esp��cies de califor��deos (23), maior que C (16), diferindo apenas nas esp��cies raras, intermedi��rias e comuns. Em A foi registrado grande n��mero de esp��cies consideradas intermedi��rias. Em B o n��mero de esp��cies raras, intermedi��rias e comuns foi similar. Em C, o n��mero de esp��cies raras foi menor que de intermedi��rias e comuns. Jackknife 2 no ponto B gerou a maior riqueza, indicando possibilidade de serem coletadas mais cinco esp��cies na reserva al��m das coletadas neste estudo, e em A e C mais tr��s esp��cies. Ace e Bootstrap apresentaram-se seguros para estimativa de riqueza de Calliphoridae. A diversidade foi maior em B. A equidade foi semelhante nos pontos. B e C foram mais semelhantes em rela����o ��s esp��cies (dendograma): Laneela nigripes e Mesembrinella bellardiana, principais destes dois pontos aparecem agrupadas; Chrysomya albiceps, Chrysomya megacephala e Hemilucilia semidiaphana, principais esp��cies em A aparecem unidas.

A new species of Buenoa Kirkaldy (Hemiptera, Heteroptera, Notonectidae) from Rio de Janeiro, Brazil

Members of Buenoa are restricted to the Western Hemisphere, with the greatest diversity of species in South America. There are about 50 described species and approximately 20 of them have been reported from Brazil. Buenoa pseudomutabilis Barbosa, Ribeiro and Nessimian, sp. nov. is described here from Maric��, Rio de Janeiro State. This species resembles B. mutabilis Truxal, 1953 because males have a stridulatory area on inner surface of forefemur, forefemur narrowed at apex, with length more than three times its width at apex, and rostral prong longer than third rostral segment. Males of B. pseudomutabilis sp. nov. can be readily recognized by the presence of 21 to 25 teeth in the stridulatory comb of foretibia, whereas in B. mutabilis the stridulatory comb of foretibia consists of approximately 33 to 38 teeth. Males of B. pseudomutabilis sp. nov. bear one nodule on each ventral laterotergite 1 of abdomen. A key to male species of Buenoa occurring in Rio de Janeiro State, including the new species, is provided.

A new species of Cernotina (Trichoptera, Polycentropodidae) from the Atlantic Forest, Rio de Janeiro State, southeastern Brazil

A new species of Cernotina (Trichoptera, Polycentropodidae) from the Atlantic Forest, Rio de Janeiro State, southeastern Brazil. Cernotina Ross, 1938, with 64 extant species, is a New World genus of caddisflies. In Brazil, there are 31 described species of which 28 are recorded from the Amazon basin. Cernotina puri sp. nov. is described and figured based on specimens collected in the Atlantic Forest, Rio de Janeiro State, Brazil. The new species can be distinguished by the shape of the intermediate appendages and tergum X. The immature stages of C. puri are unknown.

Nesting and use of pollen resources by Tetrapedia diversipes Klug (Apidae) in Atlantic Forest areas (Rio de Janeiro, Brazil) in different stages of regeneration

Nesting and use of pollen resources by Tetrapedia diversipes Klug (Apidae) in Atlantic Forest areas (Rio de Janeiro, Brazil) in different stages of regeneration. The nesting in trap-nests and use of pollen sources in larval food by Tetrapedia diversipes Klug, 1810 (Apidae) was compared between regenerating areas of Atlantic Forest. The study was conducted between April 2008 and October 2009 at Uni��o Biological Reserve, Rio de Janeiro, Brazil. T. diversipes nested in 66 trap-nests and showed a peak of nesting during the months of highest rainfall. The most frequent pollen type in brood cells during the wet season was Dalechampia sp. 1. During the dry season, the type Ludwigia sp. was the most frequent, followed by Dalechampia sp. 2. The high frequency of Dalechampia and Ludwigia species in the larval food, observed in both habitats and in the two seasons could be considered relevant for T. diversipes, suggesting highly selective diet based primarily on two plant species unrelated, but similar in size of pollen grains.

Veliidae (Insecta, Heteroptera, Gerromorpha) from southeastern Brazil: three new species from Rio de Janeiro State, a new species group for Neotropical Rhagovelia Mayr, and notes on distribution and synonymy

Microvelia nelsoni sp. nov., M. takiyae sp. nov., and Rhagovelia mangaratiba sp. nov. are described. Rhagovelia scitula and R. whitei are transferred from the robusta group to the new whitei group. Rhagovelia denticulata is synonymized under R. scitula. Microvelia longipes, Oiovelia brasiliensis, Rhagovelia sooretama, R. trianguloides, R. vaniniae, and Stridulivelia quadrispinosa are recorded for the first time from Rio de Janeiro State. Additional new municipality records in Rio de Janeiro State are presented for Microvelia braziliensis, M. ioana, M. mimula, M. pulchella, Paravelia basalis, P. itatiayana, Rhagovelia accedens, R. agra, R. aiuruoca, R. elegans, R. hambletoni, R. henryi, R. itatiaiana, R. lucida, R. macta, R. modesta, R. novana, R. scitula, R. tenuipes, R. tijuca, R. triangula, and R. zela. Corrections are presented for the previously published distributions of Rhagovelia aiuruoca, R. lucida, R. macta, and R. triangula.

Euglossine bee communities in small forest fragments of the Atlantic Forest, Rio de Janeiro state, southeastern Brazil (Hymenoptera, Apidae)

Euglossine bee communities in small forest fragments of the Atlantic Forest, Rio de Janeiro state, southeastern Brazil (Hymenoptera, Apidae). Euglossine bees are important pollinators in forests and agricultural areas. Although the structure of their communities is critically affected by anthropogenic disturbances, little is known about these bees in small forest fragments. The objectives of this study were to analyze the composition, abundance, and diversity of euglossine bee species in nine small fragments of different phytophysiognomies of the Atlantic Forest in southeastern Brazil, and to identify the environmental variables that may be related to the species composition of these communities. Males were sampled quarterly from May 2007 to May 2009 with aromatic traps containing methyl cinnamate, vanillin, eucalyptol, benzyl acetate, and methyl salicylate. A total of 1558 males, belonging to 10 species and three genera of Euglossina were collected. The richness ranged from five to seven species per fragment. Euglossa cordata, E. securigera, Eulaema nigrita e E. cingulata were common to all fragments studied. The diversity differed significantly among areas, ranging from H' = 1.04 to H' = 1.65. The precipitation, phytophysiognomy, and altitude had the highest relative importance over the species composition variation. The results presented in this study demonstrate that small forest fragments are able to support populations of euglossine bee species, most of which are widely distributed and reportedly tolerant to open and/or disturbed areas and suggest that the conservation of such areas is important, particularly in areas that are regenerating and in regions with agricultural matrices where these bees can act as important pollinators

Phlebotomine sand flies (Diptera, Psychodidae) from Rio de Janeiro State, Brazil: species distribution and potential vectors of leishmaniases

Phlebotomine sand flies (Diptera, Psychodidae) from Rio de Janeiro State, Brazil: Species distribution and potential vectors of leishmaniases. Rio de Janeiro State, in Brazil, has endemic areas of both cutaneous and visceral leishmaniases. In these areas, entomologic surveillance actions are highly recommended by Brazil's Ministry of Health. The present work describes the results of sand fly captures performed by the Health Department of Rio de Janeiro State between 2009 and 2011 in several municipalities. An updated species list and distribution of phlebotomine sand flies in the state are provided based on an extensive literature review. Currently, the sand fly fauna of Rio de Janeiro State has 65 species, belonging to the genera Brumptomyia (8 spp.) and Lutzomyia (57 spp.). Distribution maps of potential leishmaniases vector species Lutzomyia (Nyssomyia) intermedia, L. migonei, L. (N.) whitmani, L. (N.) flaviscutellata and L. (Lutzomyia) longipalpis are provided and their epidemiological importance is discussed.

Insect galls of restinga areas of Ilha da Marambaia, Rio de Janeiro, Brazil

Insect galls of restinga areas of Ilha da Marambaia, Rio de Janeiro, Brazil. This study carried out an insect gall inventory in restinga areas of Ilha da Marambaia, in the municipality of Mangaratiba, Rio de Janeiro, Brazil. Sampling was carried out monthly from April 2010 to March 2011 along the full extension of seven beaches. A total number of 147 gall morphotypes associated with 70 plant species were found, distributed in 33 plant families, and at least 54 genera. Myrtaceae was the botanical family with the highest richness of gall morphotypes and host species, followed by Bignoniaceae, Fabaceae, Asteraceae, Euphorbiaceae, Sapindaceae, and Malpighiaceae. Most of the gall morphotypes occurred in leaves (78 morphotypes), 38 in stems, 14 in flowers, eight in buds and fruits, and one in adventitious roots. The galling insects belong to the five orders: Diptera, Coleoptera, Hemiptera, Lepidoptera, and Thysanoptera. Cecidomyiidae (Diptera) was the most common galling taxon (78 morphotypes), represented by 87 species, being 78 gallers, seven inquilines and two predators. In addition to the gallers, parasitoids, inquilines, and predators were also found.

New records of Sarcophagidae species (Diptera) with forensic potential in Rio de Janeiro

ABSTRACTSarcophagidae species are frequent and abundant in the decomposition process of corpses and, consequently, play an important role as a tool for the application of Forensic Entomology. Helicobia pilifera Lopes, 1939, Microcerella erythropyga (Lopes, 1936), Oxysarcodexia fringidea Curran & Walley, 1934 and Peckia (Peckia) pexata(Wulp, 1895) were recorded for the first time in a Forensic Entomology experiment in Rio de Janeiro, using domestic pig carcasses as substrate.