Publications by authors named "Cibele S Ribeiro-Costa"

We identify 94 species of New World Bruchinae (Coleoptera: Chrysomelidae) that have not been revised since original publications that predate the establishment of current bruchine genera. Many of these have appeared in catalogs or checklists and have been transferred to genera without inspection of primary type specimens. We were able to inspect the primary types of 77 of these species; we provide new combinations for 38 and confirm previous combinations made in catalogs for an addition 39.

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Encompassing 39 species groups, Amblycerus Thunberg, 1815 is the second most diverse genus of seed-beetles in the Americas. Considering that the delimitation of some of the included species-groups is incongruent in the literature, this work tackled one particularly problematic group, the dispar group, which includes species that, depending on the classification scheme, have been classified in two other groups, namely the spondiae and alternatus groups. We recognize six valid species in the dispar group, viz.

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After an extensive revision of the literature, we come to the following conclusions concerning the nomenclature of Southern African monkey beetles of the subtribe Pachycnemina: firstly, the current usage of the nominal subgenus Pachycnemula Schein, 1959 for a subgenus taxon different from Pachycnema s. str. Le Peletier de Saint-Fargeau Audinet-Serville, 1828 is incorrect since both names share the same type species-Melolontha crassipes Fabricius, 1775-and are therefore objective synonyms.

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A taxonomic catalog of the Amblycerus species distributed in Brazil is presented with information on deposition of types, synonymies, distributions, host plants, parasites and complete literature for each species. This catalog includes 61 species, five of them recorded for the first time for Brazil, and other seven species also recorded for other countries besides Brazil. A total of 23 species have new Brazilian states records.

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Two new Brazilian species of the genus Neapion Alonso-Zarazaga, 1990 subgenus Neotropion Alonso-Zarazaga, 1990 (Brentidae: Apioninae) are described and illustrated: Neapion (Neotropion) marquesae sp. n. (Type locality: Brazil, Mato Grosso) and Neapion (Neotropion) diringsi sp.

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The rove beetle genus Hypotelus Erichson, 1839 is one of seven extant genera of a subfamily with a historically misinterpreted concept, status and phylogenetic position. The genus comprises minute species that have been found under the bark of trees or in leaf litter mainly in Neotropical forests. The major aim of this study was to test the monophyly of this genus based on adult morphology and to review its species.

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Xenopygus Bernhauer is one of the most colorful staphylinid beetles and widespread in the Neotropical region. The aim of this study was to test the monophyly of Xenopygus based on adult morphology and to review the current species. Cladistic analysis was performed with six ingroup species, including two new species.

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Merobruchus Bridwell is placed in the group Merobruchus of Acanthoscelidina (Bruchini) being distinguished from all bruchines mainly by the apical projections in the last abdominal ventrite of females and some males. All 25 species of Merobruchus are distributed in the New World, mainly in the Neotropical Region, feeding on seeds of Mimosoideae (Acacieae, Ingeae and Mimoseae). As well as some other bruchine genera, Merobruchus shows considerable morphological variation both in external and in internal (male genitalia) characters.

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A taxonomic study was performed on the Brazilian genus Miritius Bechyné & Bechyné of Monoplatina, Alticini. Here Miritius and two of its species are redescribed and descriptions for another two new species were provided: Miritius abdominalis Morais & Linzmeier sp. nov.

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The seed beetle Gibbobruchus tridentatus Manfio, Jorge & Ribeiro-Costa sp. nov. is described from the Amazon basin in Brazil (Acre) and Ecuador (Napo), and is included in an updated key to the species of Gibbobruchus Pic.

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Seed beetles are a group of specialized chrysomelid beetles, which are mostly associated with plants of the legume family (Fabaceae). In the legume-feeding species, a marked trend of phylogenetic conservatism of host use has been highlighted by several molecular phylogenetics studies. Yet, little is known about the evolutionary patterns of association of species feeding outside the legume family.

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The aim of this contribution was to review the species of Ctenocolum which are mainly distributed in the Neotropical region. The larvae of this genus have a high degree of specificity with the tribe Millettieae feeding mainly on seeds of Lonchocarpus Kunth (Fabaceae, Papilionoideae) and until now we do not know other bruchine consuming seeds of this genus. Here 13 valid species were studied, five new, divided in two groups, as previosly proposed in literature, group podagricus with Ctenocolum aquilus Albuquerque & Ribeiro-Costa sp.

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Chrysomelidae) are usually small and inconspicuous, with only a few species drawing the attention. Here we deal with several unusually colored species of Amblycerus Thunberg, 1815, one of the two most diverse bruchine genera in the Western hemisphere. We define the virens group that consists of five species whose bodies are covered with a green vestiture, including one new for science, Amblycerus medialis Ribeiro-Costa, Vieira & Manfio, sp.

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Body size is correlated with many species traits such as morphology, physiology, life history and abundance as well; it is one of the most discussed topics in macroecological studies. The aim of this paper was to analyze the body size distribution of Chrysomelidae, caught with Malaise traps during two years in four areas with different levels of conservation in the Araucaria Forest, Paraná, Brazil, determining if body size is a good predictor of abundance, and if body size could be used to indicate environmental quality. Body size was considered the total length of the specimen from the anterior region of head to the apex of abdomen/elytron.

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This note has the purpose to rectify the identification of Stethorus minutalus Gordon & Chapin as a predator of Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), for its correct name, Nephaspis cocois Gordon in a recent published paper. Similarities and differences between these two species are presented to avoid future misidentifications.

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This research intended to evaluate the development of Zabrotes subfasciatus (Boh.), a stored-grain pest, on bean genotypes (Phaseolus vulgaris L.) commonly cultivated in the State of Parana and containing arcelin, and the possible resistance of these genotypes to the bruchine.

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