Luciano De Pinho Martins

Stridulatory file and calling song of two populations of the tropical bush cricket Eneoptera surinamensis (Orthoptera, Gryllidae, Eneopterinae)

This study characterizes the calling song and ultramorphology of the stridulatory file of two geographically isolated populations of the tropical bush cricket Eneoptera surinamensis (De Geer, 1773) from city of Foz do Iguacu, state of Parana, and town of Rio Claro, state of Sao Paulo, Brazil, distant 1,000 Km from each other. The teeth are shell-shaped, the larger ones are distributed in the medium region of the file, decreasing gradually in size towards the edges. Specimens from Foz do Iguacu have a file with 82 ± 9.8 teeth, length=1.89 mm ± 0.15 with 43.76 ± 5.94 teeth per mm (n=15). Specimens from Rio Claro present a file with 87 ± 9.81, length=1.96 ± 0.19 mm with 44.52 ± 4.61 teeth per mm (n=15). Statistical differences found between the two populations are not significant. The calling song is an uninterrupted trill that alternates two sets of notes distinct for its temporal features.

Lerneca inalata beripocone subsp. nov. (Orthoptera: Phalangopsidae; Luzarinae): a new taxon for the northern Pantanal of Brazil

The first record of the Orthoptera species Lerneca inalata for Brazil is presented here. The taxon is represented by a new subspecies Lerneca inalata beripocone subsp. nov. (Phalangopsidae, Luzarinae), collected in the Pantanal of Poconé, Mato Grosso, Brazil. This work includes morphological and morphometric data as well as descriptions of female genitalia and calling song. The new subspecies has as diagnostic features the male genitalia with six ventral spines on the B sclerite, the first spine having a subtle bifurcation; the mid-region of the strongly sclerotized pseudepiphallus; inclination of C sclerite with slightly concave curvature; tegmina-length ratio and the speculum (syn. mirror) width approximately three times the length of the apical area. The description of the female genitalia and the calling song is presented for the first time for the species Lerneca inalata. A distribution map covers the local occurrence of its subspecies.

Expanding the geographic cytogenetic studies in the bush crickets Eneoptera surinamensis (De Geer, 1773) (Orthoptera, Gryllidae, Eneopterinae) from Brazilian Atlantic and Amazon Forest.

The tropical bush cricket Eneoptera surinamensis (De Geer, 1773) shows a peculiar karyotype with 2n = 9 for males, and 2n = 10 for females, with X 1 X 2 Y♂ sex mechanism systems whose origin remains unclear, probably arisen by a two-step chromosome rearrangements, including an X acrocentric and two pair of autosomal acrocentric chromosomes (Mesa & Bran 1964; Ferreira & Cella 2006). This sex system contrasts with the less derived X0♂ found in the majority of the Orthoptera species (White 1973; Hewitt 1979).

Contribution to the taxonomy of Gryllus Linnaeus, 1758 in South America : Part I : Redescription of Gryllus argentinus Saussure, 1874 (Orthoptera, Grylloidea, Gryllidae)

The genus Gryllus includes 82 described species that occur in America from Canada to Argentina as well as in several areas of Africa, Europe and Asia. There are 12 species in South America, which were described in the nineteenth century based on a small number of samples and inconsistent characters such as body coloration and external morphology. The aim of this article is to redescribe Gryllus argentinus Saussure, 1874 collected in the urban areas of Pelotas, Capão do Leão and Rio Grande, in the state of Rio Grande do Sul, southern Brazil, highlighting phallic sclerites, calling song and body morphometry. We designate the lectotype male, provide a combination of diagnostic characteristics and discuss the taxonomic situation of South American Gryllus species.

A new status for Aclogryllus Gorochov, 2009 (Phalangopsidae; Phalangopsinae; Paragryllini) with a new species from Brazilian Amazon

Neste trabalho é proposto elevar o subgênero Aclogryllus para o status de gênero baseado em características da morfologia externa e genitália do macho. Também foi descrita uma nova espécie amazônica para Aclogryllus. Fotografias da espécie nominotípica e da nova espécie são apresentadas juntamente com a descrição das características morfológicas, diagnoses e fotografias da genitália masculina e da papila copulatória da fêmea.

Two new species of crickets Adelosgryllus Mesa & Zefa, 2004 (Orthoptera, Grylloidea, Phalangopsidae) from the Araripe-Apodi National Forest, State of Ceará, Brazil

In this paper we describe two new sympatric species of phalangopsid crickets Adelosgryllus from the Araripe-Apodi National Forest, State of Ceará, Brazil, highlighting morphological characters, mainly from male genitalia, tegmina and copulatory papilla. We also present a geographical map for the valid species of the genus, as well as photographs of holotypes and paratypes. The type-material is deposited in the Museu de Zoologia da Universidade de São Paulo (MZUSP).

New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Gryllidae: Oecanthinae) from Reserva Natural Vale, Espírito Santo, Brazil, with chromosome complement.

A new species of the genus Oecanthus Serville, 1831 from Reserva Natural Vale, state of Espírito Santo, Brazil is described. The new species differs from other of this genus in characteristics of the pseudepiphallus main lobe, endophallic sclerites, posterior median lobe of the metanotal gland and black spots on the femora and tibiae. The chromosome number is 2n=16+XY♂=18 and 2n=16+XX♀=18, and this complement present one pair of autosomes less than the other five cytological studied species.

A new species of tree crickets Oecanthus (Orthoptera, Gryllidae, Oecanthinae) in tobacco plantation from Southern Brazil, with body color variation

We provide herein a description of a new species of Oecanthus collected from the tobacco plantation in southern Brazil, municipality of São Lourenço do Sul, State of Rio Grande do Sul. Description focused metanotal gland features, phallic sclerites, and calling song. A large sampling of individuals was distributed into four groups according to body and appendages color and dotted. We also rank all kind of marks present in the scape and pedicel. We compare linear morphometric variables of the metanotal glands and tegmina, as well as calling song parameters between groups in order do define all of them as the same species. Photographs and measurements are provided.

Checklist of Grasshoppers (Orthoptera: Acridoidea) from Reserva Florestal Adolpho Ducke, State of Amazonas, Brazil, and New Records for the Country

Abstract We present a list of grasshoppers from the Reserva Florestal Adolpho Ducke, a preservation area in the outskirts of Manaus, State of Amazonas, Brazil. The Ducke Reserve has been an indispensable tool for scientific development due to its considerable floristic richness. It has provided ample material for studies and research, promoting the conservation of Amazonian rainforest flora and fauna and the protection of endangered species. This checklist is intended to provide basic information on the regional grasshopper fauna, expand the current knowledge of species occurrences, and serve as a basis for systematists interested in revisionary and biogeographic work with a focus on Amazonian endemic areas. We sampled the Ducke Reserve for fifteen days using active and visual searching methods. We collected 38 species of terrestrial and semi-aquatic grasshoppers, 23 which belonged to the Acrididae and 15 to Romaleidae. Twenty four species and subspecies of grasshopper were registered for the first time for the locality and three new species and one new subspecies were recorded for Brazil.

Two new species of Hygronemobius Hebard, 1913 (Orthoptera, Grylloidea, Nemobiinae) from Brazilian Amazon.

Two new Neotropical species of Hygronemobius Hebard were described from Brazilian Amazon: Hygronemobius duckensis sp. nov. and Hygronemobius dialeucus sp. nov. Photographs of habitus, morphological characteristics and male genitalia were provided. Calling songs and spectrograms of the new species were characterized.