Publications by authors named "Cristiano F Schwertner"

Cyrtomenus includes seven species arranged in two subgenera and belongs to the most diverse subfamily of burrower bugs, Cydninae. The species present polyphagous habits, and at least two species are considered crop pests. We conduct a phylogenetic analysis based on morphological characters and two weighting schemes to test its monophyly and the validation of the included subgenera, providing for the first time a phylogenetic hypothesis for the genus.

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Latin American and the Caribbean regions (LAC) harbor one of the most biodiverse areas of the world, the Neotropics. True bugs (Hemiptera: Heteroptera) are a diverse lineage of insects, with more than 45,000 species, particularly speciose in the Neotropical region. True bugs are fundamental in the dynamics of natural and modified ecosystems, with several species critical to agriculture and public health.

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Background: Soybean is the third-greatest global commodity crop with respect to grain production, Brazil is the largest soybean producer in the world. We performed the first extensive survey including all the five main soybean cultivation regions in Brazil over three seasons (2018/2019, 2019/2020, and 2020/2021). A total of 2386 localities were sampled, corresponding to 145 municipalities in 11 states.

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Piezodorus guildinii (Westwood, 1837) (Hemiptera: Pentatomidae) is an important arthropod pest of soybean (Glycine max (L.) Merr.) throughout American continents.

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The rare Neotropical Discocephalini (Heteroptera: Pentatomidae) monotypic genus Glyphuchus Stål, 1860 and its type species Glyphuchus sculpturatus Stål, 1860 are known only from the female holotype. Here, they are redescribed based on a recently collected specimen and on the holotype. The male of the genus is described for the first time based on a specimen collected in a protected area of the Atlantic Rain Forest, in southeastern Brazil.

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A checklist of 5 subfamilies, 108 genera, and 246 species of stinks bugs (Hemiptera, Pentatomidae) from Colombia is provided. Three genera [Andrallus Bergroth, Placocoris Mayr, and Pseudobebaeus Distant], and eight species [Arocera spectabilis (Drury), Andrallus spinidens (Fabricius), Banasa excavata Thomas, Banasa saileri Thomas, Banasa varians Stl, Chinavia scutellata (Distant), Pelidnocoris haglundi Ruckes, and Pseudobebaeus truncatus (Fallou)] are recorded for the first time from Colombia. Images of dorsal external habitus for all genera that occur in Colombia are offered.

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In recent years, the management of invasive stink bugs (Pentatomidae) has been a challenge in many regions of the world, including the Neotropical, where four non-native species were detected in the last two decades. Species with invasive potential include the yellow-spotted stink bug, Erthesina fullo (Thunberg). It is polyphagous and is known to cause damages to fruit crops in Southeast Asia.

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Euschistus heros (Hemiptera: Pentatomidae) has two allopatric strains with a hybrid zone in central Brazil. Asymmetric dispersal and gene flow between these strains of E. heros have been observed, where the South strain (SS) moves more quickly to the northern regions of the country than the North strain (NS) to the southern areas.

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This special issue of Zootaxa is published in honor of Dr. Jocélia Grazia (Fig. 1) from the Universidade Federal do Rio Grande do Sul, Brazil, one of the world's most respected and influential active taxonomists in Heteroptera.

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The expansion of soybean Glycine max (L.) Merrill in South America has provided an abundant host to the native arthropod fauna. Stink bugs (Heteroptera: Pentatomidae) are severe pests on soybean crops due to their feeding activities.

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The genus Chinavia Orian has a great diversity of species, being distributed in the Nearctic, Neotropical and Afrotropical regions (Rolston 1983; Schwertner Grazia 2007, Grazia Schwertner 2017). The genus is included in the subfamily Pentatominae, tribe Nezarini, whose individuals retain their green coloration after death, average size between 9 and 19 mm, and considered polyphagous (Rolston 1983; Schwertner et al. 2002; Rider 2020).

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Genitalia are multitasking structures whose development is mediated by numerous regulatory pathways. This multifactorial nature provides an avenue for multiple sources of selection. As a result, genitalia tend to evolve as modular systems comprising semi-independent subsets of structures, yet the processes that give rise to those patterns are still poorly understood.

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The genus Euschistus Dallas includes 67 species restricted to the New World, and several species are registered on cultivated plants in the Nearctic and Neotropical regions. In South America, most Euschistus species are completely overlooked due to the lack of information to allow accurate identification. Here, we redescribed Euschistus taurulus Berg, including for the first time, characterization of the internal and external genitalia of both sexes.

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Burrower bugs are unique among true bugs, recognized by the morphological adaptations for digging, and include several species of economic importance for causing damages in roots and ground pods. Damage records has been growing in the last two decades in the Neotropics, but taxonomic problems still hampers studies in these group of insects. Cyrtomenus bergi Froeschner and C.

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Cydninae is the largest subfamily among burrower bugs all around the world and for Brazil the genera Cyrtomenus, Dallasiellus, Ectinopus, Melanaethus, Onalips, Pangaeus, Prolobodes and Tominotus were reported with a total of 39 species, so far. Basing on the material of nine entomological collections, we updated the list to 47 species including new records and a new species, Tominotus ondulatus sp. nov.

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New records of genera and species of stink bugs (Hemiptera: Pentatomidae) from Colombia are provided. Two genera are new records for South America: Alathetus and Schraderiellus. Fifteen genera are new record for Colombia: Agaclitus, Boea, Ceratozygum, Euthyrhynchus, Eritrachys, Doesburguedessa, Lopadusa, Marmessulus, Paralincus, Patanius, Peromatus, Phalaecus, Phoeacia, Rio, and Tyrannocoris.

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Chinavia is one of the most diverse genera of Pentatomidae, comprising 80 species distributed in the Afrotropical, Neartic and Neotropical regions. Some groups of species have been proposed in the literature based on morphological similarities or phylogenetic analyses. The geniculata group was proposed to include C.

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Chinavia Orian (1965) is one of the most diverse genera of Pentatomidae, distributed in the Afrotropical, Neotropical and Nearctic Regions. Thirty-two species are recorded for Brazil, some of them having potential economic impact because they are found on crops and referred to as pests. The morphology of the five nymphal instars of Chinavia armigera (Stål, 1859), Chinavia aseada (Rolston, 1983), Chinavia brasicola (Rolston, 1983) and Chinavia runaspis (Dallas, 1851) are described here.

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Chinavia longicorialis (Breddin) is recorded only in Brazil, Argentina and Uruguay on host plants of at least three different families. Adults and nymphs were reared under standard controlled conditions (24 +/- 1 degrees C; 70 +/- 10% RH; 12hL:12hD), and fed on green beans (Phaseolus vulgaris L.).

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Adults and nymphs of Chinavia erythrocnemis (Berg) were colected on Sebastiania commersoniana (Baill.) Smith & Downs in the Parque Estadual do Espinilho in Barra do Quarai county, RS, and used to establish a laboratory culture reared on green pods of Phaseolus vulgaris L. Egg coloration is light-brown, chorion is reticulated and aero-micropylar processes are clubbed and white; mean number of aero-micropylar processes is 61.

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