Amblytropidia paranaensis n. sp., a new species of grasshopper (Orthoptera: Acrididae: Gomphocerinae) from Paran State, Brazil, including new records, a distribution map and a key to the Brazilians species.

A new species of Amblytropidia Stl, 1873 (Orthoptera, Acrididae, Gomphocerinae), named Amblytropidia paranaensis n. sp., is delineated from the Trs Barras do Paran municipality, Paran State, Brazil.

New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Grylloidea) from Southern Brazilian Atlantic Forest, with bioacoustics.

Tree Crickets, Oecanthus Serville, 1831 have a worldwide distribution, and are known as Tree Crickets because they are common in the treetops, even though many species occur in different strata of forest, and also in open fields. In this work we describe a new species of Oecanthus from Southern Brazil, based on the most significant diagnostic structures in the ocanthine taxonomy, such as the phallic sclerites and metanotal gland morphology, as well as calling song. The new species herein described has a distinct faint red spot between the eyes, a metanotal gland with a triangular posterior median lobe with the apex curved up and forward, the median lophi of pseudepiphallus slightly elongate with an U-shaped invagination, and the ectophallic distal arc prolongation with the posterior apex U-bifurcated.

Male genitalia morphology and dichotomous key of the Neotropical genera of Abracrini (Orthoptera: Acrididae: Ommatolampidinae) grasshoppers.

The comparative analysis of the internal and external male genitalia of the Abracrini grasshoppers was conducted, including representatives of the type species of the genera, specimens compared with the same or more representative specimens of the genus, and bibliography data. We include schematic illustrations that point to the morphological differences between the genitalia, based on subgenital plate, furculae, epiproct, cerci, ectophallic sheath, aedeagal valves, expansion of gonopore and epiphallus. A dichotomous key to the 21 Abracrini genera was presented.

Neopedies taimensis n. sp. of Brazilian Dichroplini (Orthoptera: Acrididae, Melanoplinae) from Rio Grande do Sul, Brazil.

Neopedies taimensis n. sp. is described as a new species of grasshopper from the genus Neopedies Hebard, 1931 collected in Taim Ecological Station, State of Rio Grande do Sul, Brazil.