Distribuição geográfica da Tribo Tetrataeniini (Orthoptera, Acrididae, Leptysminae) no Brasil

Abstract

The Tribe Tetrataeniini (Orthoptera, Acrididae, Leptysminae) comprises a diversity of semiaquatic grasshoppers with a wide distribution in the Neotropical region. Individuals of this group play important roles in natural and agricultural ecosystems. In Brazil, there is insufficient data to cover the vast territorial extension for delineating occurrence areas of species belonging to the Tribe Tetrataeniini. This study aims to catalog and analyze georeferenced data on Tetrataeniini species within the national territory, based on records available in scientific literature and entomological collection databases. Using QGIS software, maps were generated to highlight the spatial distribution of species, identifying potential occurrence areas for Tetrataeniini species, regions with the highest concentration of records, and knowledge gaps. This research observes that the distribution of species in this tribe is strongly associated with biomes such as the Amazon (46%) and the Atlantic Forest (33.1%), reflecting their ecological preferences and potential relationships with environmental factors. It also notes that six species (Xenismacris aetoma Roberts & Carbonell, 1980, Tetrataenia virgata (Gerstaecker, 1889), Stenopola tigris Roberts & Carbonell, 1979, Stenopola viridis Roberts, 1980, Stenopola caatingae Roberts & Carbonell, 1979, and Cornops dorsatum (Bruner, 1911)) and two subspecies (Stenopola rubrifrons mima Roberts & Carbonell, 1979, and Eumastusia koebelei koebelei (Rehn, 1909)) are endemic to Brazil. This study aims to support future research on species of the Tetrataeniini Tribe to determine the factors influencing their distribution, identify potential organisms for use as bioindicators and biological control agents in Brazil, and provide a basis for further taxonomic and ecological investigations.