Elidiomar Ribeiro Da-Silva

As espécies de ephemeroptera (insecta) registradas para o Brasil

(The species of mayflies (Ephemeroptera: Insecta) recorded from Brazil). A checklist of the Brazilian Ephemeroptera fauna with all species, genera and families recorded from the country, including the states for which every species is reported, and the pertinent reference is presented. Comments on the status of knowledge of the Brazilian mayfly fauna are also provided. Up to date, 10 families, 63 genera, and 166 species are recorded. Baetidae and Leptophlebiidae have more than 50% of all records, while the North and Southeastern regions are significantly better studied than the other areas of the country.

Baetidae (Ephemeroptera) na região sudeste do Brasil: novos registros e chave para os gêneros no estágio ninfal

Com o intuito de complementar e integrar o conhecimento relativo a fauna de Baetidae do sudeste brasileiro, treze especies e nove generos dessa familia sao registrados. Dos vinte generos da familia relatados para o Brasil, apenas cinco nao foram encontrados na Regiao Sudeste. Uma lista com todas as especies registradas, incluindo sua distribuicao e referencias bibliograficas pertinentes, e apresentada. Uma chave ilustrada e proposta para a identificacao dos generos no estagio ninfal registrados ate o momento para a regiao.

Leptophlebiidae ocorrentes no Estado do Rio de Janeiro, Brasil: hábitats, meso-hábitats e hábitos das ninfas (Insecta: Ephemeroptera)

A familia Leptophlebiidae e ainda pobremente conhecida no Estado do Rio de Janeiro, tanto em termos faunisticos quanto taxonomicos e biologicos. No presente trabalho foram reunidos dados biologicos acerca de 14 generos (Askola, Farrodes, Hagenulopsis, Hermanella, Hylister, Leentvaaria, Massartella, Miroculis, Needhamella, Perissophlebiodes, Thraulodes, Traverella e Ulmeritoides, alem de um genero ainda nao descrito) e em torno de 25 morfoespecies ocorrentes no estado. Em termos ecologicos, a maioria dos generos e especies dessa familia esta associada a ambientes loticos ritrais, colonizando areas de deposicao de material orgânico aloctone.

As brânquias dos gêneros de Leptophlebiidae (Insecta: Ephemeroptera) ocorrentes no Estado do Rio de Janeiro

The gills of the leptophlebiid genera Askola, Farrodes, Hagenulopsis, Hermanella, Hylister, Leentvaaria, Needhamella, Perissophlebiodes, Massartella, Miroculis, Thraulodes, Traverella, and Ulmeritoides are described and figured.

Flutuação populacional de Agallia incongrua Oman, 1938 (Hemiptera: Cicadellidae) em Viçosa, Minas Gerais, Brasil

Population fluctuation of Agallia incongrua Oman, 1938 (Hemiptera: Cicadellidae) in Vicosa, Minas Gerais, Brazil. Based on light-trap collections from 1986 to 1988 at Mata do Paraiso, Vicosa county, Minas Gerais State, Brazil, annual fluctuations of the leafhopper Agallia incongrua Oman, 1938 were studied. Fluctuations in the population were positively correlated to mean temperature. No significant correlations between the species fluctuations and the rainfall patterns were observed. The population pattern of A. incongrua during the wet season was not different from that of the dry season at Mata do Paraiso.

Redescription of the adults and description of the larvae and eggs of Oligoneurioides amazonicus Demoulin (Ephemeroptera: Oligoneuriidae)

Abstract The male adults of the genus Oligoneurioides and its type species, O. amazonicus, are redescribed. The female, larva, and egg are described for the first time and the distribution of the genus is extended. Notes on the biology of the larvae are also provided. The main characters that can be used to distinguish the genus and species from the other members of the family are: adults with (1) ventral portion of head concealed by a membranous extension of the frons; (2) vein IMP of forewings absent; (3) cross veins restricted to spaces between C and Sc, R1 and R3; and (4) penis lobes sclerotised, apically curved. Larvae with (1) head strongly projected anteriorly; (2) mid and hind episterna and epimera projected laterally; (3) prominent posterolateral projections on segments II – IX. Eggs polygonal in shape, polar caps absent and surface adorned with circular rugose protuberances.

Ninfas de Thraulodes Ulmer, 1920 (Insecta: Ephemeroptera: Leptophlebiidae) ocorrentes no estado do Rio de Janeiro, Brasil

Nymphs of Thraulodes Ulmer, 1920 (Insecta: Ephemeroptera: Leptophlebiidae) from Rio de Janeiro State, Brazil. An undescribed nymph of Thraulodes, herein called as Thraulodes sp., is described and illustrated based on a specimen from Itatiaia, Rio de Janeiro State, Brazil. Also is described and illustrated the nymph of T. itatiajanus Traver & Edmunds, 1967. In the nymphal stage both species are diagnosed mainly based on details of the mouthparts, gills, and colour pattern of the abdomen.

A New Species of Dikrella Oman, 1949 (Hemiptera: Cicadellidae: Typhlocybinae) Found on Caryocar brasiliense Cambess. (Caryocaraceae) in Minas Gerais State, Brazil

A new species of Dikrella is described and figured based on specimens from Minas Gerais, Southeastern Brazil. The new species is diagnosed by the process of pygofer and the general form of aedeagus. Adult males, females, and also nymphs were found on pequi tree, suggesting that Dikrella caryocar n. sp. has its full life cycle in this plant.

On the female of Gypona reversa DeLong & Martinson, 1972, with emphasis on genital structures (Insecta: Hemiptera: Cicadellidae)

Abstract Gypona reversa DeLong & Martinson, 1972 has its ovipositor described and illustrated based on the examination of specimens from its type locality. This is the first species of Gypona Germar, 1821 to have the female genitalia detailed description published.

Ephemeroptera, Leptohyphidae, Amanahyphes saguassu Salles and Molineri, 2006: first record from state of Pará, Brazil

Amanahyphes saguassu Salles and Molineri, 2006 is firstly recorded from state of Para. Specimens from Para presented wings with more curved anal veins than those from state of Amazonas, illustrated in the original description, showing variability among populations of this species. Amanahyphes saguassu is similar to Leptohyphodes inanis (Pictet, 1843), sharing both nymph and adult characteristics.