ABSTRACT
Abstract A pictorial key for the identification of aquatic and semiaquatic adults of Curculionidae associated with aquatic macrophytes from the Pantanal of Mato Grosso and the Amazon is presented for the first time based on the study of 13,252 specimens belonging to the two families of Curculionoidea (Brentidae and Curculionidae), six subfamilies, eight tribes, 22 genera and 24 species, most belonging to Tanysphyrini (Curculionidae, Brachycerinae). This key can be extrapolated to the Neotropical Region fauna due to the wide distribution of the included species, which is discussed in relation to taxonomic, biogeographical, and ecological studies.
Resumo Apresenta-se pela primeira vez uma chave pictórica para identificação dos adultos aquáticos e semiaquáticos de Curculionidae associados às macrófitas aquáticas do Pantanal mato-grossense e da Amazônia, baseada no estudo de 13.252 exemplares pertencentes a duas famílias de Curculionoidea (Brentidae e Curculionidae), seis subfamílias, oito tribos, 22 gêneros e 24 espécies, a maioria pertencente a Tanysphyrini (Curculionidae, Brachycerinae). A chave proposta pode ser extrapolada para a fauna da Região Neotropical devido a ampla distribuição das espécies incluídas, as quais são discutidas em relação aos estudos taxonômicos, biogeográficos e ecológicos.
ABSTRACT
Two new Brazilian species of the genus Coelocephalapion Wagner, 1914 placed in the C. nodicorne species-group (Brentidae: Apioninae) reared from Euphorbiaceae are described and illustrated: Coelocephalapion paleariae sp. n. (Type locality: Botucatu, São Paulo state; reared from seeds Croton glandulosus L.) and Coelocephalapion geraldinhoi sp. n. (Type locality: Dores do Indaiá, Minas Gerais state; reared from leaf galls on Croton antisyphiliticus Mart.). Aside from species descriptions, we also provide a key to species of the C. nodicorne species-group.
Subject(s)
Coleoptera , Euphorbiaceae , Animals , Brazil , Plant LeavesABSTRACT
The genus Pygidiapion De Sousa Mermudes gen. n., described and illustrated here, includes two species from Brazil: the type-species Pygidiapion zeppelinii De Sousa Mermudes sp. n. (type-locality: João Pessoa, Paraiba state), which develops in flower buds of Pterocarpus violaceus Vogel (Fabaceae); and Pygidiapion zikani (Heller, 1922) comb. n. (from Apion) (type-locality: Passa Quatro, Minas Gerais state), which develops in flower buds of Dalbergia foliolosa Benth. (Fabaceae). Pygidiapion is defined by the following set of characters: rostrum of males with two elongate longitudinal and punctate latero-ventral sulci; hind wings with small radial window; hypomeral lobes divided by median suture and sternellum distinctly exposed; meso- and metatibiae mucronate; pygidium of the apionine incomplete type; and tegminal plate fused with basal piece. Pygidiapion zeppelinii is diagnosed by: meso- and metatibiae mucronate; pygidium distinctly modified, with deep transverse dorsal sulcus, medially deeper and rounded, and proximal marginal rim angulate (apical flange), corresponding to the distal margin, which is emarginate; tegminal plate fused to basal piece, apical portion of parameroid lobes weakly notched medially, each side of suprafenestral plate with five macrochaetae, fenestral width 1.25 times length, separated by about 3.2 times fenestral width, linea arquata visible, prostegium protruding medially, tegminal apodeme 0.76 as long as basal piece, with apex narrow and rounded. Pygidiapion zikani is distinguished from P. zeppelinii by smaller size; head, rostrum and antennae brownish; scutellum subquadrate; and by association with Dalbergia spp. (Fabaceae). Association principally with the papilionoid group of Fabaceae suggest allocation of the new taxon to the subtribe Oxystomatina.
Subject(s)
Coleoptera , Fabaceae , Animals , Brazil , Head , MaleABSTRACT
The fourteen described South American species of Heilus (Curculionidae, Molytinae, Molytini, Hylobiina) are reviewed for the first time. Eleven species are redescribed based on specimens (almost exclusively from Brazil) examined by us: H. bistigma (Hustache, 1938), H. faldermanni (Boheman, 1836), H. fasciculatus (Boheman, 1843), H. freyreissi (Boheman, 1836), H. inaequalis (Boheman, 1836) [= type species of the genus], H. iniquus (Kirsch, 1874), H. myops (Boheman, 1836), H. ochrifer (Boheman, 1843), H. pupillatus (Olivier, 1790), H. rufescens (Boheman, 1836), and H. tuberculosus (Perty, 1832). Diagnoses of one additional Brazilian species, Heilus admixtus (Hustache, 1938), and two additional South American species, H. asperulus (Erichson, 1847), and H. inornatus (Kirsch, 1874), are presented based on the literature and by examination of images of the type material. Integument texture and the variations in the patterns of maculation are the main characteristics used for species identification. Geographic distribution, descriptions of male and female genitalia are provided for eleven redescribed species, together with habitus photographs, and an identification key to the fourteen described South American species.
Subject(s)
Coleoptera , Weevils , Animals , Brazil , Female , MaleABSTRACT
Abstract: Here we examine the taxonomic diversity of the Brazilian Apioninae (Coleoptera: Brentidae) and provide an update based on the literature and through examination of material in primary Brazilian collections. Ten genera and 89 species are valid and we include 30 (25 genera, 5 species) new distribution records. Chrysapion Kissinger, 1968 is first reported in Brazil, restricted to the northeast. Ranges now include the Amazon (three genera and one subgenus) and Atlantic (four genera and one subgenus) forests, the Pantanal (five genera) and Cerrado (three genera). The ranges of several genera now include more than one new biome. An identification key (including images of adults and illustrations of male genitalia) also includes the 10 Brazilian genera of Apioninae for the first time.
Resumo: O conhecimento sobre a diversidade taxonômica da fauna de Apioninae (Coleoptera: Brentidae) do Brasil é atualizado com base na literatura disponível e exame de material depositado nas principais coleções públicas do país. Dez gêneros e de 89 espécies válidas foram incluídas em 30 novos registros de distribuição (25 gêneros e cinco espécies). Chrysapion Kissinger, 1968 é registrado pela primeira para o Brasil, restrito aos biomas do Nordeste do Brasil. A distribuição geográfica inclui Amazônia (três gêneros e um subgênero) e Mata Atlântica (quatro gêneros e um subgênero), o Pantanal (cinco gêneros) e Cerrado (três gêneros). A distribuição de vários gêneros é atualizada para mais de um bioma. Uma chave de identificação (com imagens dos adultos e desenhos da genitália masculina) é apresentada pela primeira vez para os 10 gêneros de Apioninae que ocorrem no Brasil.
ABSTRACT
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. n. (Type locality: Brazil, Amazonas). Neapion (Neotropion) marquesae sp. n. has dense, thin vestiture and raised areas on the elytra (recorded for the first time to the South American Apioninae); Neapion (Neotropion) diringsi sp. n. differs by the sparse vestiture and absence of raised areas. In addition to these characters, the vestiture color pattern and male genitalia characters such as the form of penis, length of the 'tuning-fork' shaped sclerite in the internal sac (the largest found in Apioninae) and the form of the tegminal plate are fundamental for the diagnosis of species of this subgenus. We also provide a key to the species of South American Neapion (Neotropion).