Resumo
A new species of Euschistus Dallas, 1851, E. (M.) irroratus sp. nov. from Rio Grande do Sul, Brazil and Misiones, Argentina, is described and illustrated.
Uma nova espécie de Euschistus Dallas, 1851, E. (M.) irroratus sp. nov. do Rio Grande do Sul, Brasil e Misiones, Argentina, é descrita e ilustrada.
Resumo
A new species of Euschistus Dallas, 1851, E. (M.) irroratus sp. nov. from Rio Grande do Sul, Brazil and Misiones, Argentina, is described and illustrated.
Uma nova espécie de Euschistus Dallas, 1851, E. (M.) irroratus sp. nov. do Rio Grande do Sul, Brasil e Misiones, Argentina, é descrita e ilustrada.
Resumo
A cladistic analysis using 63 characters and 30 genera of the Neotropical tribe Ochlerini Rolston was performed to test their monophyletic condition and to establish a relationship hypothesis. Janeirona Distant, 1911 (Pentatomini) and the tribes Discocephalini and Halyini were included in the ingroup to test their relationship with Ochlerini; Marghita Ruckes, 1964 and Stictochilus Bergroth, 1918 (Pentatomini) were used as outgroups. The obtained strict consensus cladograms indicate that Ochlerini and Discocephalinae are monophyletic groups, but Pentatominae, Halyini+Ochlerini, Pentatomini+Ochlerini, Ochlerus Spinola, 1837, Stalius Rolston, 1992 and Alitocoris Sailer, 1950 are merophyletic groups. Discocephalini and Ochlerini share three synapomorphies: first rostral segment long, attaining prosternum; metasternum with a mesial, longitudinal carina, and dorsal surface of basal third of male proctiger membranous. Ochlerini is supported by one synapomorphy, the flattened dorsal surface of third tarsal segment of hind legs, in females. Biogeographical analysis based on consensus cladograms shows congruent patterns with several vicariant events proposed for the Neotropical region.
Neste trabalho foi realizada uma análise cladística, utilizando 63 caracteres, dos 30 gêneros da tribo Neotropical Ochlerini Rolston, no intuito de testar seu monofiletismo e estabelecer uma hipótese de parentesco. Janeirona Distant, 1911 (Pentatomini) e as tribos Discocephalini e Halyini foram incluídas no grupo-interno para testar seu relacionamento com Ochlerini; Marghita Ruckes, 1964 e Stictochilus Bergroth, 1918 (Pentatomini) foram utilizados como grupos-externos. Os cladogramas de consenso estrito obtidos indicam que Ochlerini e Discocephalinae são grupos monofiléticos, mas Pentatominae, Halyini+Ochlerini, Pentatomini+Ochlerini, Ochlerus Spinola, 1837, Stalius Rolston, 1992 e Alitocoris Sailer, 1950 são grupos merofiléticos. Discocephalini e Ochlerini compartilham três sinapomorfias: primeiro segmento do rostro longo, alcançando o prosterno; metasterno carenado longitudinalmente; e superfície dorsal do segmento X do macho membranosa no terço basal. Ochlerini é sustentada por uma sinapomorfia, a superfície dorsal do terceiro artículo metatarsal das fêmeas aplainada. Uma análise biogeográfica a partir dos cladogramas de consenso mostrou padrões congruentes com eventos vicariantes propostos para a região Neotropical.
Resumo
A cladistic analysis using 63 characters and 30 genera of the Neotropical tribe Ochlerini Rolston was performed to test their monophyletic condition and to establish a relationship hypothesis. Janeirona Distant, 1911 (Pentatomini) and the tribes Discocephalini and Halyini were included in the ingroup to test their relationship with Ochlerini; Marghita Ruckes, 1964 and Stictochilus Bergroth, 1918 (Pentatomini) were used as outgroups. The obtained strict consensus cladograms indicate that Ochlerini and Discocephalinae are monophyletic groups, but Pentatominae, Halyini+Ochlerini, Pentatomini+Ochlerini, Ochlerus Spinola, 1837, Stalius Rolston, 1992 and Alitocoris Sailer, 1950 are merophyletic groups. Discocephalini and Ochlerini share three synapomorphies: first rostral segment long, attaining prosternum; metasternum with a mesial, longitudinal carina, and dorsal surface of basal third of male proctiger membranous. Ochlerini is supported by one synapomorphy, the flattened dorsal surface of third tarsal segment of hind legs, in females. Biogeographical analysis based on consensus cladograms shows congruent patterns with several vicariant events proposed for the Neotropical region.
Neste trabalho foi realizada uma análise cladística, utilizando 63 caracteres, dos 30 gêneros da tribo Neotropical Ochlerini Rolston, no intuito de testar seu monofiletismo e estabelecer uma hipótese de parentesco. Janeirona Distant, 1911 (Pentatomini) e as tribos Discocephalini e Halyini foram incluídas no grupo-interno para testar seu relacionamento com Ochlerini; Marghita Ruckes, 1964 e Stictochilus Bergroth, 1918 (Pentatomini) foram utilizados como grupos-externos. Os cladogramas de consenso estrito obtidos indicam que Ochlerini e Discocephalinae são grupos monofiléticos, mas Pentatominae, Halyini+Ochlerini, Pentatomini+Ochlerini, Ochlerus Spinola, 1837, Stalius Rolston, 1992 e Alitocoris Sailer, 1950 são grupos merofiléticos. Discocephalini e Ochlerini compartilham três sinapomorfias: primeiro segmento do rostro longo, alcançando o prosterno; metasterno carenado longitudinalmente; e superfície dorsal do segmento X do macho membranosa no terço basal. Ochlerini é sustentada por uma sinapomorfia, a superfície dorsal do terceiro artículo metatarsal das fêmeas aplainada. Uma análise biogeográfica a partir dos cladogramas de consenso mostrou padrões congruentes com eventos vicariantes propostos para a região Neotropical.
Resumo
Taurocerus Amyot & Serville, 1843 is revised based on morphology of male and female genitalia. Four species are recognized: T. edessoides (Spinola, 1837), T. achiles Stål, 1862, T. abruptus (Walker, 1867), and T. amazonensis sp. nov. Illustrations of male and female genitalia and a key for the species are provided.
Taurocerus Amyot & Serville, 1843 é revisado com base na morfologia da genitália masculina e feminina. Quatro espécies são reconhecidas: T. edessoides (Spinola, 1837), T. achilles Stål, 1862, T. abruptus (Walker, 1867) e T. amazonensis sp. nov. São fornecidas ilustrações e uma chave para identificação das espécies.
Resumo
Taurocerus Amyot & Serville, 1843 is revised based on morphology of male and female genitalia. Four species are recognized: T. edessoides (Spinola, 1837), T. achiles Stål, 1862, T. abruptus (Walker, 1867), and T. amazonensis sp. nov. Illustrations of male and female genitalia and a key for the species are provided.
Taurocerus Amyot & Serville, 1843 é revisado com base na morfologia da genitália masculina e feminina. Quatro espécies são reconhecidas: T. edessoides (Spinola, 1837), T. achilles Stål, 1862, T. abruptus (Walker, 1867) e T. amazonensis sp. nov. São fornecidas ilustrações e uma chave para identificação das espécies.
Resumo
The immature stages of the rice bug Oebalus poecilus (Dallas, 1851) are described. The egg and the external morphological characters of the five nymphal stages were described and illustrated. The nymphs were exposed to two different photoperiods to induce seasonal forms to detect morphological differences.
Resumo
Two new species of the Neotropical genus Pseudevoplitus Ruckes,1958 are described, P. amazonicus Grazia & Greve, sp. nov. and P. roraimensis Grazia & Greve, sp. nov. both from the Brazilian Amazonia, with emphasis on genital characters. Additions to the generic description and a new key to the species are presented.
Resumo
Two new species of the Neotropical genus Pseudevoplitus Ruckes,1958 are described, P. amazonicus Grazia & Greve, sp. nov. and P. roraimensis Grazia & Greve, sp. nov. both from the Brazilian Amazonia, with emphasis on genital characters. Additions to the generic description and a new key to the species are presented.
Resumo
The immature stages of the rice bug Oebalus poecilus (Dallas, 1851) are described. The egg and the external morphological characters of the five nymphal stages were described and illustrated. The nymphs were exposed to two different photoperiods to induce seasonal forms to detect morphological differences.
Resumo
Runibia Stål, 1861 is redescribed, as well as the species R. dallasi Rider, 1998, R. decorata (Dallas, 1851), R. discoidea (Fabricius, 1787), R. euopta (Walker, 1867) and R. perspicua (Fabricius, 1798). A new species, R. caribeana, is described from Virgin Islands. Strachia alligata Walker, 1867, R. decorata var. alligata, and R. picturata Breddin, 1904 were considered junior synonyms of R. decorata. Lectotypes of R. dallasi, R. euopta and R. alligata were designated. Male and female genitalia for all species are described, except the phallus and ectodermal genital duct for R. dallasi. A key and a geographical distribution map are also provided.
Resumo
Runibia Stål, 1861 is redescribed, as well as the species R. dallasi Rider, 1998, R. decorata (Dallas, 1851), R. discoidea (Fabricius, 1787), R. euopta (Walker, 1867) and R. perspicua (Fabricius, 1798). A new species, R. caribeana, is described from Virgin Islands. Strachia alligata Walker, 1867, R. decorata var. alligata, and R. picturata Breddin, 1904 were considered junior synonyms of R. decorata. Lectotypes of R. dallasi, R. euopta and R. alligata were designated. Male and female genitalia for all species are described, except the phallus and ectodermal genital duct for R. dallasi. A key and a geographical distribution map are also provided.
Resumo
Runibia Stål, 1861 is redescribed, as well as the species R. dallasi Rider, 1998, R. decorata (Dallas, 1851), R. discoidea (Fabricius, 1787), R. euopta (Walker, 1867) and R. perspicua (Fabricius, 1798). A new species, R. caribeana, is described from Virgin Islands. Strachia alligata Walker, 1867, R. decorata var. alligata, and R. picturata Breddin, 1904 were considered junior synonyms of R. decorata. Lectotypes of R. dallasi, R. euopta and R. alligata were designated. Male and female genitalia for all species are described, except the phallus and ectodermal genital duct for R. dallasi. A key and a geographical distribution map are also provided.
Resumo
Four new species of Acrosternum from Brazil are described: Acrosternum (Chinavia)immaculatum(Pará, Mato Grosso, Minas Gerais), A.(C.) panizzii (Paraná), A. (C.) pontagrossensis(Paraná)and A. (C.) rideri (Amazonas, Mato Grosso, Goiás, Distrito Federal, Minas Gerais). The external and internal genitalia of both sexes, except of A. (C.) pontagrossensis are studied. A key for the identification of all known species of the genus is included.
Resumo
Stink bugs are seed/fruit sucking insects feeding on an array of host plants. Among them, an exotic tree called privet, Ligustrum lucidum Ait. (Oleaceae), is very common in the urban areas of the Brazilian subtropics, where it is utilized as food source and shelter for over a decem species of bugs, year round. The species composition, their performance and abundance on this host, and possible causes for this association are discussed and illustrated.
Resumo
Stink bugs are seed/fruit sucking insects feeding on an array of host plants. Among them, an exotic tree called privet, Ligustrum lucidum Ait. (Oleaceae), is very common in the urban areas of the Brazilian subtropics, where it is utilized as food source and shelter for over a decem species of bugs, year round. The species composition, their performance and abundance on this host, and possible causes for this association are discussed and illustrated.
Resumo
Four new species of Acrosternum from Brazil are described: Acrosternum (Chinavia)immaculatum(Pará, Mato Grosso, Minas Gerais), A.(C.) panizzii (Paraná), A. (C.) pontagrossensis(Paraná)and A. (C.) rideri (Amazonas, Mato Grosso, Goiás, Distrito Federal, Minas Gerais). The external and internal genitalia of both sexes, except of A. (C.) pontagrossensis are studied. A key for the identification of all known species of the genus is included.
Resumo
Stink bugs are seed/fruit sucking insects feeding on an array of host plants. Among them, an exotic tree called privet, Ligustrum lucidum Ait. (Oleaceae), is very common in the urban areas of the Brazilian subtropics, where it is utilized as food source and shelter for over a decem species of bugs, year round. The species composition, their performance and abundance on this host, and possible causes for this association are discussed and illustrated.
Resumo
Four new species of Acrosternum from Brazil are described: Acrosternum (Chinavia)immaculatum(Pará, Mato Grosso, Minas Gerais), A.(C.) panizzii (Paraná), A. (C.) pontagrossensis(Paraná)and A. (C.) rideri (Amazonas, Mato Grosso, Goiás, Distrito Federal, Minas Gerais). The external and internal genitalia of both sexes, except of A. (C.) pontagrossensis are studied. A key for the identification of all known species of the genus is included.