Polymitarcyidae Banks, 1900 (Insecta, Ephemeroptera) from the Western Region of Pará, Brazil

Resumen

Abstract: Polymitarcyidae has a worldwide geographic distribution. Their nymphs are adapted to the fossorial habit, while the adults (imagos) have atrophied legs, except for the anterior legs of the males. This study represents the first survey of this family in the western region of Pará. For this purpose, we collected nymphs and adults. Nymphs were captured using aquatic entomological nets and sieves, while adults were obtained using light traps and flight interception. In addition, we used online sources, such as the Brazilian Fauna Taxonomic Catalog, the EPHEMBRAZIL platform and the Ephemeroptera da América do Sul website. The survey revealed the presence of three genera and 13 species of Polymitarcyidae in the region, including six new records for the state of Pará. These results highlight the importance of geographic distribution surveys to expand our knowledge about biodiversity.