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Marino, Ana Maria - One of the best experts on this subject based on the ideXlab platform.
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An annotated list of planthoppers with alternate hosts from Kallar tract of Punjab, Pakistan
'ResearchersLinks Ltd', 2020Co-Authors: Rizwan Muhammad, Mariani Roxana, Marino, Ana Maria, Atta Bilal, Sabir, Arshed Makhdoom, Tahir Muhammad, Rizwan Misbah, Sabar Muhammad, Rafique, Ch. Muhammad, Afzal MuhammadAbstract:Diversity of planthoppers and their host plants were studied in the "Kallar" tract of the Punjab, Pakistan (an important growing area of the world for producing Basmati rice). Planthoppers are considered the most important pests of rice. Delphacidae and Cixiidae are families of planthoppers with the most harmful species. Delphacids are primarily vector of the viruses, whereas Cixiids are vectors of phytoplasmas, mycoplasmas and prokaryotes-like associated to the class Mollicutes. Specimens of planthoppers were collected from the rice fields and surrounding weeds. A list of Fulgoromorpha is provided, with distributional and biological records as well. Records are extracted primarily from field data and specialized reference sources. Seven species from two different families of Fulgoromorpha were related to rice ecosystem (Cixiidae, one species and Delphacidae; six species). Three Delphacid species, whitebacked planthopper Sogatella furcifera, brown planthopper Nilaparvata lugens and small brown planthopper (SBPH) Laodelphax striatellus are well-known vectors of severe rice pathogenic diseases in the Oriental and Paleartic regions. Laodelphax striatellus was recorded on rice for the first time in Pakistan. Among alternate hosts, Trifolium alexandrium, Leptochloa chinensis, Helianrhus allus, Medicago polymorpha and Sorghum bicolor were recorded for L. striatellus, while Leptochloa chinensis, Helianrhus allus, Medicago polymorpha, Sorghum bicolor, Zea mays and Cynodon dactylon were recorded for S. furcifera for the first time. N. lugens was recorded on weeds Leptochloa chinensis and Medicago polymorpha.Fil: Rizwan, Muhammad. Rice Research Institute; PakistánFil: Atta, Bilal. Rice Research Institute; PakistánFil: Marino, Ana Maria. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Mariani, Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; ArgentinaFil: Sabir, Arshed Makhdoom. Rice Research Institute; PakistánFil: Tahir, Muhammad. The Islamia University of Bahawalpur; PakistánFil: Rizwan, Misbah. Government College for Women; PakistánFil: Sabar, Muhammad. Rice Research Institute; PakistánFil: Rafique, Ch. Muhammad. Rice Research Institute; PakistánFil: Afzal, Muhammad. Hill Fruit Research Station; Pakistá
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A new species of Sogatella (Hemiptera: Delphacidae) from temperate Argentina
'Elsevier BV', 2018Co-Authors: Mariani Roxana, Marino, Ana MariaAbstract:A new species from Argentina, Sogatella unidentata sp. nov. (Hemiptera: Delphacidae), is described and illustrated as belonging to the S. furcifera group. The main distinctive characteristics are tegmen coloration, shape of aedeagus and number and dispositions of its teeth, and shape of parameres in males; length of the ovipositor, and shape of the gonapophysis IX in females. A key is included to facilitate the comparison of the new species with the closely allied. Furthermore, information on host plants and geographical distribution is provided. This is the southernmost record in the distribution of the S. furcifera group.Key words Distribution; Fulgoromorpha; Host plant; Systematics; Taxonomy.Fil: Mariani, Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; ArgentinaFil: Marino, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentin
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New taxa and combinations in Neotropical Delphacini (Hemiptera: Fulgoroidea)
'Magnolia Press', 2017Co-Authors: Marino, Ana Maria, Me BrentassiAbstract:A new South American genus of Delphacini (Hemiptera: Fulgoromorpha: Delphacidae), Neodelphax n. gen., is described. It includes a new species, N. sakakibarai sp. n., which is described herein, and two species that are removed from the genus Dicranotropis. All of them are illustrated. Supplementary descriptions of female N. fuscoterminata (Berg) comb. n. and N. acheron (Fennah) comb. n., including some new records and host plants associations are added. A preliminary key for males and females of South American species of Neodelphax with representative illustrations is also provided.Key Words: Auchenorrhyncha, planthopper, new genus, new species Neodelphax fuscoterminata (Berg) comb. n., N. acheron (Fennah) comb. n., Argentina, Chile.Fil: Marino, Ana Maria. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Brentassi, Me. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentin
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Una nueva especie neotropical del género Megamelus y nueva combinación para Stenocranus maculipes (Hemiptera: Delphacidae)
Sociedad Entomológica Argentina, 2016Co-Authors: Mariani Roxana, Sosa, Alejandro Joaquín, Marino, Ana MariaAbstract:We report on two species of Delphacidae from Argentine wetlands, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. and Megamelus maculipes Berg) comb. nov. The first species was collected from Eryngium sp. (Apiales: Apiaceae) and was described from the brachypters of both sexes. The second one,Stenocranus maculipes (Berg, 1879) collected from Echinodorus grandiflorum (Alismataceae), is proposed as Megamelus maculipes comb.nov. The female macropter holotype is redescribed and the male and female brachypters are described for the first time. Geographic distribution and biological data of both species are reported. The genus Eryngium is cited for the first time as host plant for the genus Megamelus. Additionally, a key is provided to distinguish among the seven South American species of Megamelus.Se estudian dos especies de Delphacidae que habitan en humedales de la Argentina, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. y Megamelus maculipes (Berg) comb. nov. La primera fue colectada sobre Eryngium sp. (Apiales: Apiaceae) y se describe a partir de formas braquípteras de ambos sexos. Además, se propone a Stenocranus maculipes (Berg, 1879), colectada en Echinodorus grandiflorum (Alismataceae), como Megamelus maculipes comb. nov. Se redescribe el holotipo hembra macróptero y se describen por primera vez los braquípteros de ambos sexos. Se aportan datos distribucionales y biológicos de las especies tratadas y se menciona por primera vez al género Eryngium como hospedante del género Megamelus. Asimismo, se provee una clave para la identificación de las siete especies sudamericanas de Megamelus.Fil: Mariani, Roxana. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Sosa, Alejandro Joaquín. Fundación para el Estudio de Especies Invasivas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Marino, Ana Maria. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
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Una nueva especie neotropical del género Megamelus y nueva combinación para Stenocranus maculipes (Hemiptera: Delphacidae)
Sociedad Entomológica Argentina, 2016Co-Authors: Mariani Roxana, Sosa, Alejandro Joaquín, Marino, Ana MariaAbstract:Se estudian dos especies de Delphacidae que habitan en humedales de la Argentina, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. y Megamelus maculipes (Berg) comb. nov. La primera fue colectada sobre Eryngium sp. (Apiales: Apiaceae) y se describe a partir de formas braquípteras de ambos sexos. Además, se propone a Stenocranus maculipes (Berg, 1879), colectada en Echinodorus grandiflorum (Alismataceae), como Megamelus maculipes comb. nov. Se redescribe el holotipo hembra macróptero y se describen por primera vez los braquípteros de ambos sexos. Se aportan datos distribucionales y biológicos de las especies tratadas y se menciona por primera vez al género Eryngium como hospedante del género Megamelus. Asimismo, se provee una clave para la identificación de las siete especies sudamericanas de Megamelus.We report on two species of Delphacidae from Argentine wetlands, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. and Megamelus maculipes (Berg) comb. nov. The first species was collected from Eryngium sp. (Apiales: Apiaceae) and was described from the brachypters of both sexes. The second one, Stenocranus maculipes (Berg, 1879) collected from Echinodorus grandiflorum (Alismataceae), is proposed as Megamelus maculipes comb.nov. The female macropter holotype is redescribed and the male and female brachypters are described for the first time. Geographic distribution and biological data of both species are reported. The genus Eryngium is cited for the first time as host plant for the genus Megamelus. Additionally, a key is provided to distinguish among the seven South American species of Megamelus.Fil: Mariani, Roxana. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata; ArgentinaFil: Sosa, Alejandro Joaquín. Fundación para el Estudio de Especies Invasivas; ArgentinaFil: Marino, Ana Maria. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata; Argentin
Baoan Song - One of the best experts on this subject based on the ideXlab platform.
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quantitative detection of relative expression levels of the whole genome of southern rice black streaked dwarf virus and its replication in different hosts
Virology Journal, 2013Co-Authors: Jiaju Liu, Zhenchao Wang, Zhuo Chen, Rong Guo, J C Correll, Song Yang, Baoan SongAbstract:Background In recent years, a disease caused by Southern rice black-streaked dwarf virus (SRBSDV) has resulted in significant loss in rice production in Southern China and has spread quickly throughout East and Southeast Asia. This virus is transmitted by an insect vector, white-backed planthopper (WBPH) Sogatella furcifera (Hemiptera: Delphacidae), in a persistent propagative manner. Aside from rice, SRBSDV can also infect numerous Poaceae plants. However, the molecular mechanism of interaction between SRBSDV and its plant or insect vector remains unclear. In order to address this, we investigated the whole viral genome relative mRNA expression level in distinct hosts and monitored their expression level in real-time in rice plants.
Mariani Roxana - One of the best experts on this subject based on the ideXlab platform.
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Una nueva especie neotropical del género Megamelus y nueva combinación para Stenocranus maculipes (Hemiptera: Delphacidae)
2020Co-Authors: Mariani Roxana, Sosa, Alejandro Joaquín, Marino De Remes Lenicov, Ana MaríaAbstract:Se estudian dos especies de Delphacidae que habitan en humedales de la Argentina, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. y Megamelus maculipes (Berg) comb. nov. La primera fue colectada sobre Eryngium sp. (Apiales: Apiaceae) y se describe a partir de formas braquípteras de ambos sexos. Además, se propone a Stenocranus maculipes (Berg, 1879), colectada en Echinodorus grandiflorum (Alismataceae), como Megamelus maculipes comb. nov. Se redescribe el holotipo hembra macróptero y se describen por primera vez los braquípteros de ambos sexos. Se aportan datos distribucionales y biológicos de las especies tratadas y se menciona por primera vez al género Eryngium como hospedante del género Megamelus. Asimismo, se provee una clave para la identificación de las siete especies sudamericanas de Megamelus.We report on two species of Delphacidae from Argentine wetlands, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. and Megamelus maculipes (Berg) comb. nov. The first species was collected from Eryngium sp. (Apiales: Apiaceae) and was described from the brachypters of both sexes. The second one, Stenocranus maculipes (Berg, 1879) collected from Echinodorus grandiflorum (Alismataceae), is proposed as Megamelus maculipes comb.nov. The female macropter holotype is redescribed and the male and female brachypters are described for the first time. Geographic distribution and biological data of both species are reported. The genus Eryngium is cited for the first time as host plant for the genus Megamelus. Additionally, a key is provided to distinguish among the seven South American species of Megamelus.Facultad de Ciencias Naturales y Muse
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An annotated list of planthoppers with alternate hosts from Kallar tract of Punjab, Pakistan
'ResearchersLinks Ltd', 2020Co-Authors: Rizwan Muhammad, Mariani Roxana, Marino, Ana Maria, Atta Bilal, Sabir, Arshed Makhdoom, Tahir Muhammad, Rizwan Misbah, Sabar Muhammad, Rafique, Ch. Muhammad, Afzal MuhammadAbstract:Diversity of planthoppers and their host plants were studied in the "Kallar" tract of the Punjab, Pakistan (an important growing area of the world for producing Basmati rice). Planthoppers are considered the most important pests of rice. Delphacidae and Cixiidae are families of planthoppers with the most harmful species. Delphacids are primarily vector of the viruses, whereas Cixiids are vectors of phytoplasmas, mycoplasmas and prokaryotes-like associated to the class Mollicutes. Specimens of planthoppers were collected from the rice fields and surrounding weeds. A list of Fulgoromorpha is provided, with distributional and biological records as well. Records are extracted primarily from field data and specialized reference sources. Seven species from two different families of Fulgoromorpha were related to rice ecosystem (Cixiidae, one species and Delphacidae; six species). Three Delphacid species, whitebacked planthopper Sogatella furcifera, brown planthopper Nilaparvata lugens and small brown planthopper (SBPH) Laodelphax striatellus are well-known vectors of severe rice pathogenic diseases in the Oriental and Paleartic regions. Laodelphax striatellus was recorded on rice for the first time in Pakistan. Among alternate hosts, Trifolium alexandrium, Leptochloa chinensis, Helianrhus allus, Medicago polymorpha and Sorghum bicolor were recorded for L. striatellus, while Leptochloa chinensis, Helianrhus allus, Medicago polymorpha, Sorghum bicolor, Zea mays and Cynodon dactylon were recorded for S. furcifera for the first time. N. lugens was recorded on weeds Leptochloa chinensis and Medicago polymorpha.Fil: Rizwan, Muhammad. Rice Research Institute; PakistánFil: Atta, Bilal. Rice Research Institute; PakistánFil: Marino, Ana Maria. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Mariani, Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; ArgentinaFil: Sabir, Arshed Makhdoom. Rice Research Institute; PakistánFil: Tahir, Muhammad. The Islamia University of Bahawalpur; PakistánFil: Rizwan, Misbah. Government College for Women; PakistánFil: Sabar, Muhammad. Rice Research Institute; PakistánFil: Rafique, Ch. Muhammad. Rice Research Institute; PakistánFil: Afzal, Muhammad. Hill Fruit Research Station; Pakistá
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Life history of Megamelus scutellaris with description of immature stages (Hemiptera: Delphacidae)
2019Co-Authors: Sosa A. J., Mariani Roxana, Marino De Remes Lenicov, Ana María, Cordo H. A.Abstract:The five immature stages of Megamelus scutellaris Berg (Hemiptera: Delphacidae) are described and illustrated. The main characters that distinguish the various stages are body size, number of tarsomeres and tibial spines, color, and number of teeth on the metatibial spur. New biological data based on laboratory rearing and field observations show that M. scutellaris can carry out its biological cycle successfully on water hyacinth, Eichhornia crassipes (Martius) Solms Laubach (Pontederiaceae). Mating occurs close to the water level and one to four eggs per scar are laid in apical portion of petiole and pseudolaminae. Ovipositional scars are recognized by three parallel marks. In addition, the efficient rearing in captivity, the high survivorship registered, and overwintering on only water hyacinth suggest M. scutellaris as a potential biocontrol agent of this invasive aquatic weed.Facultad de Ciencias Naturales y Muse
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A new species of Sogatella (Hemiptera: Delphacidae) from temperate Argentina
'Elsevier BV', 2018Co-Authors: Mariani Roxana, Marino, Ana MariaAbstract:A new species from Argentina, Sogatella unidentata sp. nov. (Hemiptera: Delphacidae), is described and illustrated as belonging to the S. furcifera group. The main distinctive characteristics are tegmen coloration, shape of aedeagus and number and dispositions of its teeth, and shape of parameres in males; length of the ovipositor, and shape of the gonapophysis IX in females. A key is included to facilitate the comparison of the new species with the closely allied. Furthermore, information on host plants and geographical distribution is provided. This is the southernmost record in the distribution of the S. furcifera group.Key words Distribution; Fulgoromorpha; Host plant; Systematics; Taxonomy.Fil: Mariani, Roxana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; ArgentinaFil: Marino, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentin
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Una nueva especie neotropical del género Megamelus y nueva combinación para Stenocranus maculipes (Hemiptera: Delphacidae)
Sociedad Entomológica Argentina, 2016Co-Authors: Mariani Roxana, Sosa, Alejandro Joaquín, Marino, Ana MariaAbstract:We report on two species of Delphacidae from Argentine wetlands, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. and Megamelus maculipes Berg) comb. nov. The first species was collected from Eryngium sp. (Apiales: Apiaceae) and was described from the brachypters of both sexes. The second one,Stenocranus maculipes (Berg, 1879) collected from Echinodorus grandiflorum (Alismataceae), is proposed as Megamelus maculipes comb.nov. The female macropter holotype is redescribed and the male and female brachypters are described for the first time. Geographic distribution and biological data of both species are reported. The genus Eryngium is cited for the first time as host plant for the genus Megamelus. Additionally, a key is provided to distinguish among the seven South American species of Megamelus.Se estudian dos especies de Delphacidae que habitan en humedales de la Argentina, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. y Megamelus maculipes (Berg) comb. nov. La primera fue colectada sobre Eryngium sp. (Apiales: Apiaceae) y se describe a partir de formas braquípteras de ambos sexos. Además, se propone a Stenocranus maculipes (Berg, 1879), colectada en Echinodorus grandiflorum (Alismataceae), como Megamelus maculipes comb. nov. Se redescribe el holotipo hembra macróptero y se describen por primera vez los braquípteros de ambos sexos. Se aportan datos distribucionales y biológicos de las especies tratadas y se menciona por primera vez al género Eryngium como hospedante del género Megamelus. Asimismo, se provee una clave para la identificación de las siete especies sudamericanas de Megamelus.Fil: Mariani, Roxana. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Sosa, Alejandro Joaquín. Fundación para el Estudio de Especies Invasivas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Marino, Ana Maria. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Guoqing Yang - One of the best experts on this subject based on the ideXlab platform.
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silencing a sugar transporter gene reduces growth and fecundity in the brown planthopper nilaparvata lugens stal hemiptera Delphacidae
Scientific Reports, 2015Co-Authors: Yiping Jiang, Ting Xia, Qisheng Song, David Stanley, Peng Kuai, Guoqing YangAbstract:Silencing a sugar transporter gene reduces growth and fecundity in the brown planthopper, Nilaparvata lugens (Stal) (Hemiptera: Delphacidae)
Marino De Remes Lenicov, Ana María - One of the best experts on this subject based on the ideXlab platform.
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Una nueva especie neotropical del género Megamelus y nueva combinación para Stenocranus maculipes (Hemiptera: Delphacidae)
2020Co-Authors: Mariani Roxana, Sosa, Alejandro Joaquín, Marino De Remes Lenicov, Ana MaríaAbstract:Se estudian dos especies de Delphacidae que habitan en humedales de la Argentina, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. y Megamelus maculipes (Berg) comb. nov. La primera fue colectada sobre Eryngium sp. (Apiales: Apiaceae) y se describe a partir de formas braquípteras de ambos sexos. Además, se propone a Stenocranus maculipes (Berg, 1879), colectada en Echinodorus grandiflorum (Alismataceae), como Megamelus maculipes comb. nov. Se redescribe el holotipo hembra macróptero y se describen por primera vez los braquípteros de ambos sexos. Se aportan datos distribucionales y biológicos de las especies tratadas y se menciona por primera vez al género Eryngium como hospedante del género Megamelus. Asimismo, se provee una clave para la identificación de las siete especies sudamericanas de Megamelus.We report on two species of Delphacidae from Argentine wetlands, Megamelus nigrifasciatus Mariani & Remes Lenicov sp. nov. and Megamelus maculipes (Berg) comb. nov. The first species was collected from Eryngium sp. (Apiales: Apiaceae) and was described from the brachypters of both sexes. The second one, Stenocranus maculipes (Berg, 1879) collected from Echinodorus grandiflorum (Alismataceae), is proposed as Megamelus maculipes comb.nov. The female macropter holotype is redescribed and the male and female brachypters are described for the first time. Geographic distribution and biological data of both species are reported. The genus Eryngium is cited for the first time as host plant for the genus Megamelus. Additionally, a key is provided to distinguish among the seven South American species of Megamelus.Facultad de Ciencias Naturales y Muse
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Studies on the immature stages of the planthopper Lepidelphax pistiae (Hemiptera: Delphacidae), a potential biocontrol agent for the aquatic weed Pistia stratiotes (Araceae) from Argentina
2019Co-Authors: Marino De Remes Lenicov, Ana María, Defea, Bárbara Soledad, Rusconi, José Matías, Cabrera Walsh GuillermoAbstract:Descriptions of the immature stages of the planthopper Lepidelphax pistiae Remes Lenicov (Delphacidae), a specialist herbivore of Pistia stratiotes L.(Alismatales: Araceae) from Argentina, are provided. Newly emerged nymphs from eggs collected in the field, were reared in rearing chambers. Fifth nymphal instars may be easily recognized by the whitish coloration with a distinctive blackish antennal flagellum and ungues, and the relatively long frons and rostrum. Information is provided on nymphal behavior and the main features of the fifth nymph instar that distinguishes it from the two other delphacids that live and feed on plants from centraland northern Argentine wetlands.Facultad de Ciencias Naturales y Muse
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Life history of Megamelus scutellaris with description of immature stages (Hemiptera: Delphacidae)
2019Co-Authors: Sosa A. J., Mariani Roxana, Marino De Remes Lenicov, Ana María, Cordo H. A.Abstract:The five immature stages of Megamelus scutellaris Berg (Hemiptera: Delphacidae) are described and illustrated. The main characters that distinguish the various stages are body size, number of tarsomeres and tibial spines, color, and number of teeth on the metatibial spur. New biological data based on laboratory rearing and field observations show that M. scutellaris can carry out its biological cycle successfully on water hyacinth, Eichhornia crassipes (Martius) Solms Laubach (Pontederiaceae). Mating occurs close to the water level and one to four eggs per scar are laid in apical portion of petiole and pseudolaminae. Ovipositional scars are recognized by three parallel marks. In addition, the efficient rearing in captivity, the high survivorship registered, and overwintering on only water hyacinth suggest M. scutellaris as a potential biocontrol agent of this invasive aquatic weed.Facultad de Ciencias Naturales y Muse
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Abundance and species richness of leafhoppers and planthoppers (Hemiptera: Cicadellidae and Delphacidae) in Brazilian Maize Crops
2019Co-Authors: Martins De Oliveira, Charles, Marino De Remes Lenicov, Ana María, Elizabeth De ,oliveira, Prazeres De Souza, Isabel Regina, Alves Elcio, Dolezal William, Paradell, Susana Liria, Frizzas, Marina ReginaAbstract:Insects in the Cicadellidae and Delphacidae families, common in grasses, are an important group of vectors of viruses and mollicutes, which cause diseases in several plant species. The goal of this study was to evaluate the abundance and species richness of Cicadellidae and Delphacidae and the presence of potential vectors of viruses and mollicutes in maize crops in Brazil. Insects were collected using sweep nets in maize crops in 48 counties of 8 states, distributed in 4 regions of Brazil in the yr 2005, 2006 and 2007, with a total of 198 samples. The collected material was screened, and the leafhoppers and planthoppers were identified at the species level. A total of 4233 Cicadellidae specimens, including 30 species, and 205 Delphacidae specimens, including 9 species, were collected. The most abundant species was Dalbulus maidis (Delong & Wolcott) representing 90.1% of leafhoppers and planthoppers. Abundance and species richness differences were observed between the northeast and center-south regions of Brazil. Eight species of leafhoppers and planthoppers were identified as vectors or potential vectors of viruses and mollicutes in maize, although some of these viruses are not reported in Brazil. Among these species, we identified the planthoppers, Caenodelphax teapae (Fowler), Peregrinus maidis Ashmed, Pyrophagus tigrinus Remes Lenicov & Varela and Toya propinqua (Fieber) are experimental vectors of Mal de Río Cuarto virus, which is a quarantine virus in Brazil. Two Cicadellidae species and 3 Delphacidae species were reported for the first time in Brazil.Cigarrinhas das famílias Cicadellidae e Delphacidae são comuns em gramíneas e formam um grupo reconhecidamente importante de insetos vetores de vírus e molicutes, agentes causais de doenças em diversas espécies vegetais. O objetivo deste estudo foi avaliar a abundância e a riqueza se espécies de Cicadellidae e Delphacidae e a presença de vetores potenciais desses fitopatógenos na cultura do milho, em regiões produtoras desse cereal, no Brasil. Utilizando dé rede entomológica, cigarrinhas foram coletadas em lavouras de milho nos anos de 2005, 2006 e 2007 em 48 municípios de 8 estados e 4 regiões do Brasil, em um total de 198 amostras. O material coletado foi separado e identificado em nível de espécie. Foram coletados 4233 espécimes de Cicadellidae pertencentes a 30 espécies e 205 espécimes de Delphacidae de nove espécies. A espécie mais abundante foi Dalbulus maidis representando 90,1% das cigarrinhas. Diferenças em abundância e riqueza de species foram observadas entre as regiões nordeste e centro-sul do Brasil. Oito espécies de cigarrinhas (Cicadellidae e Delphacidae) são vetores ou vetores potenciais de vírus e mollicutes que infectam o milho, embora a ocorrência de alguns desses fitopatógenos não esteja relatada no Brasil. Dentre essas espécies identificou-se as cigarrinhas Caenodelphax teapae (Fowler), Peregrinus maidis Ashmed, Pyrophagus tigrinus Remes Lenicov & Varela e Toya propinqua (Fieber), vetores em condições experimentais do Mal de Río Cuarto virus, que é um vírus quarentenário para o Brasil. Duas espécies de Cicadellidae e 3 de Delphacidae são registradas pela primeira vez no Brasil.Facultad de Ciencias Naturales y Muse
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A New Genus and Species of Delphacini (Hemiptera: Fulgoromorpha: Delphacidae) Associated with Hydrophytic Plants in Argentina
2019Co-Authors: Marino De Remes Lenicov, Ana María, Cabrera Walsh GuillermoAbstract:A new delphacid genus and species from Argentina, Lepidelphax pistiae Remes Lenicov, gen. et sp. nov.(Hemiptera: Fulgoromorpha: Delphacidae: Delphacini), is described and illustrated, and biological, distribution and experimental host range data are provided. Males of the new genus are easily distinguished from all other Neotropical Delphacini by being pale cream to white in color with a distinctive pair of longitudinal stripes on the face and symmetrical dark brown to black spots on the thorax and abdomen; very slender, laterally compressed, with long legs, narrow and short vertex with a small sub-apical areola continued by a distinctively simple frontal median carina. It also has unique malegenital structures. Laboratory and field data indicate this species is a specialized herbivore that feeds and oviposits exclusively on Pistia stratiotes (Alismatales: Araceae), a floating macrophyte native to South America. Lepidelphax pistiae was found throughout the distribution of P. stratiotes in Argentina.Un nuevo género y especie de Delphacidae de Argentina, Lepidelphax pistiae Remes Lenicov (Hemiptera: Fulgoromorpha: Delphacidae: Delphacini), es descrito e ilustrado aportando datos biológicos, de distribución y rango de hospederos, mediante pruebas experimentales. Los machos del nuevo género se distinguen fácilmente de los otros Delphacini Neotropicales por su coloración amarillenta a blancuzca con distintivas bandas longitudinales pares marrón oscuro a negras entre las carenas de la región frontal, y también otras máculas dorsales y laterales en el tórax y abdomen. Son formas esbeltas, comprimidas lateralmente, con patas largas; cabeza con el vertex estrecho y corto, una pequeña areola subapical continuada por una marcada carena mediana frontal simple. Complejo genital del macho con características distintivas. Datos de laboratorio y de campo indican que es una especie herbívora especialista que se alimenta y ovipone exclusivamente en Pistia stratiotes L. (Alismatales: Araceae), macrófita flotante nativa de América del Sur. Lepidelphax pistiae fue encontrada a lo largo de la distribución de P. stratiotes en la Argentina.Facultad de Ciencias Naturales y Muse