Rodney Cavichioli
Universidade Federal do Paraná, Departamento de Zoologia, Faculty Member
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The five nymphal instars of Acrogonia sp., Dilobopterus costalimai Young and Oncometopia facialis (Signoret) are described based on external morphology. Identification keys were elaborated, for recognition of nymphal instars and for... more
The five nymphal instars of Acrogonia sp., Dilobopterus costalimai Young and Oncometopia facialis (Signoret) are described based on external morphology. Identification keys were elaborated, for recognition of nymphal instars and for distinction between males and females of third, fourth and fifth instars of these sharpshooter leafhoppers, which are important vectors of Xylella fastidiosa in citrus. A key for identification of
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Este trabalho foi realizado com o objetivo de estudar a eficiência de transmissão de Xylella fastidiosa por cigarrinhas em citros e cafeeiro, em relação a aspectos comportamentais e taxonômicos desses insetos vetores. Inicialmente,... more
Este trabalho foi realizado com o objetivo de estudar a eficiência de transmissão de Xylella fastidiosa por cigarrinhas em citros e cafeeiro, em relação a aspectos comportamentais e taxonômicos desses insetos vetores. Inicialmente, avaliou-se a ocorrência de infecção e sobrevivência de dois isolados de X. fastidiosa em plantas de boldo (Vernonia condensata) e lixeira (Aloysia virgata), que são usadas na criação de cigarrinhas. Nenhuma infecção foi detectada nessas plantas, em avaliações realizadas com poucos dias ou vários meses após a inoculação dos isolados por agulha. Hospedeiros imunes ao patógeno são ideais para obtenção de insetos vetores sadios. Desenvolveu-se, então, uma técnica de produção e manutenção de cigarrinhas sadias em plantas de boldo e laranja-doce, a partir de posturas obtidas de adultos coletados no campo. Com os insetos sadios da criação, iniciaram-se os experimentos de transmissão em citros e em cafeeiro com quatro espécies de cigarrinhas representativas das t...
Cercopoidea, are classified into five families: Cercopidae, Aphrophoridae, Clastopteridae, Machaerotidae and Epipygidae. Their common name, spittlebugs, refers to the habit of nymphs to cover themselves in a spittle-like mass that... more
Cercopoidea, are classified into five families: Cercopidae, Aphrophoridae, Clastopteridae, Machaerotidae and Epipygidae. Their common name, spittlebugs, refers to the habit of nymphs to cover themselves in a spittle-like mass that protects them from predators, parasites, and desiccation. This foam is composed of air bubbles trapped in plant fluid discharged by the insects digestive system, and other substances produced by the Malpighian tubules. Cercopidae, the largest group in the superfamily, comprises nearly 1,400 species, they are known for their bright color pattern. Several species are important agricultural pests, especially of pasture grasses, sugar cane, and rice. Cryan and Svenson (2010) provided the first molecular phylogenetic analysis of Cercopoidea, in which the monophyly of the New World Cercopidae is corroborated, however the classification of Cercopoidea remains problematic at nearly all higher categories the number of the families is disputed, and the classificatio...
Three new species of the Neotropical sharpshooter genus Subrasaca Young, 1977 from Southeastern and Southern Brazil are described and illustrated: S. diminuta sp. nov. (State of São Paulo and State of Paraná), S. rubra sp. nov. (State of... more
Three new species of the Neotropical sharpshooter genus Subrasaca Young, 1977 from Southeastern and Southern Brazil are described and illustrated: S. diminuta sp. nov. (State of São Paulo and State of Paraná), S. rubra sp. nov. (State of Minas Gerais and State of São Paulo), and S. rachelae sp. nov. (State of Espirito Santo). Subrasaca nigriventris (Signoret, 1855) is reinterpreted, redescribed and illustrated based on specimens from Southeastern Brazil (State of Rio de Janeiro). In addition to the external morphology, color pattern, and male genitalia, this paper includes detailed descriptions and illustrations of the female genitalia. A key to males of all known Subrasaca species is provided.
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ABSTRACT Paratubana serrana, a new species from the Atlantic Forest of the states of Rio de Janeiro and Paraná, Brazil, is described and illustrated based on male and female specimens. The new taxon can be distinguished from the seven... more
ABSTRACT Paratubana serrana, a new species from the Atlantic Forest of the states of Rio de Janeiro and Paraná, Brazil, is described and illustrated based on male and female specimens. The new taxon can be distinguished from the seven known species of Paratubana Young, 1977 by features of the male genitalia and color pattern (especially the dark red forewings with two broad longitudinal yellowish-brown to whitish stripes, one along the costal margin and another along the inner claval margin). The female genitalia of a Paratubana species are described in detail for the first time. A key to males of eight known species of the genus is added. http://zoobank.org/urn:lsid:zoobank.org:pub:EAC7DDC6-F963-4A93-AA2C-AEE47B2439CE
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ABSTRACT The sharpshooter genus Geitogonalia Young was so far known from a single species from Southeastern Brasil—Geitogonalia quatuordecimmaculata (Taschenberg). A new species, Geitogonalia viridis, is described and illustrated in this... more
ABSTRACT The sharpshooter genus Geitogonalia Young was so far known from a single species from Southeastern Brasil—Geitogonalia quatuordecimmaculata (Taschenberg). A new species, Geitogonalia viridis, is described and illustrated in this paper based on males and females from the state of Rio de Janeiro. In addition, the female of G. quatuordecimmaculata is for the first time described and illustrated in detail. Geitogonalia quatuordecimmaculata is a dark species marked with bright orange on the fore wings, whereas the new species has the corium and clavus of the fore wings mostly green. The paraphyses are well developed in G. quatuordecimmaculata, with elongate rami, whereas they are inconspicuous in G. viridis, with the rami modified as a pair of very small sclerites.
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Mahanarva (Ipiranga) takiyae sp. nov. (Cercopidae) is described and illustrated from Brazil. This new species can be distinguished from other known species in the genus by the tegmen with three rounded yellow spots and the shape of the... more
Mahanarva (Ipiranga) takiyae sp. nov. (Cercopidae) is described and illustrated from Brazil. This new species can be distinguished from other known species in the genus by the tegmen with three rounded yellow spots and the shape of the paramere. Mahanarva (Mahanarva) rubripennis is transferred to the subgenus Mahanarva (Ipiranga).
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ABSTRACT The species of Subrasaca Young, 1977 with longitudinal dark brown to black stripes on the forewings are reviewed. Two new taxa are described and illustrated: S. constricta sp. nov. (from the State of Bahia, NE. Brazil, new record... more
ABSTRACT The species of Subrasaca Young, 1977 with longitudinal dark brown to black stripes on the forewings are reviewed. Two new taxa are described and illustrated: S. constricta sp. nov. (from the State of Bahia, NE. Brazil, new record for the genus) and S. bimaculata sp. nov. (from the states of Minas Gerais and São Paulo, SE. Brazil and the State of Paraná, S. Brazil). Two other species from SE. Brazil are treated: S. flavolineata (Signoret, 1855) is redescribed and Tettigonia curvovittata Stål, 1862, previously considered a junior synonym of S. flavolineata, is recognized as a valid Subrasaca species (new combination) and also redescribed. In addition to the external morphology, color pattern, and male genitalia, this paper includes the first detailed description and illustrations of the female genitalia of a Subrasaca species.
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The new sharpshooter species Sonesimia nessimiani is described from Bolivia based on specimens collected on sugar cane. An identification key to males and females of all known species of the genus is given. In addition to the external... more
The new sharpshooter species Sonesimia nessimiani is described from Bolivia based on specimens collected on sugar cane. An identification key to males and females of all known species of the genus is given. In addition to the external morphology, color pattern, and male genitalia, female genital structures are also described and illustrated. Notes comparing the new species with the remaining six Sonesimia species are provided.
Research Interests: Evolutionary Biology, Zoology, Taxonomy, Agriculture, Morphology, and 8 moreBolivia, Female, Animals, Male, Colour, Hemiptera, Keys, and Female Genitalia
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Synonymic note in Chinaia Bruner & Metcalf (Hemiptera, Cicadellidae, Neocoelidiinae). A new synonym is proposed: Chinaia caprella Kramer, 1958 = Neocoelidiana chlorata DeLong & Kolbe, 1975 syn. nov. The species is redescribed and... more
Synonymic note in Chinaia Bruner & Metcalf (Hemiptera, Cicadellidae, Neocoelidiinae). A new synonym is proposed: Chinaia caprella Kramer, 1958 = Neocoelidiana chlorata DeLong & Kolbe, 1975 syn. nov. The species is redescribed and illustrated.
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