Thraulodes sp. Distribution. Brazil (Tocantins). Material examined. BRAZIL, Tocantins, Arraias, rio Palmas, 12°49’50”S / 46°54’32”W, 04.vii.2018, white sheet light trap, Alvim, B.G.C. coll. (1♂, CEUFT). Remarks. In the same area, specimens of Thraulodes xavantinensis Mariano, Flowers & Froehlich, 2011 and one specimen of Thraulodes sp. were captured. This morphospecies resembles Thraulodes schlingeri Traver & Edmunds 1967 based on the curved telopenis. The main differences were the position of the telopenis (directed medially-ventrally on T. schlingeri versus postero-medially on Thraulodes sp. 1), the distribution of the spots on the abdomen (tergum II–VIII with a pair of gray midway spots on T. schlingeri versus midway spots on each tergum II–VIII absent on Thraulodes sp. 1) and the projection of the styliger plate (medial portion sharp on T. schlingeri versus medial portion rounded on Thraulodes sp. 1). The individual possibly represents a new species; however, until more specimens and different life stages can be added to the analysis, this record will be treated with a provisioal species designation. It was found in only one collecting site, an area with Cerrado influence.

Published as part of Orlando, Thales Yann, Salles, Frederico Falcão, Boldrini, Rafael & Krolow, Tiago Kütter, 2021, Updated records for Leptophlebiidae (Ephemeroptera) and a new species of Thraulodes Ulmer, 1920 from Tocantins State, Northern Brazil, pp. 39-55 in Zootaxa 5076 (1) on pages 46-47, DOI: 10.11646/zootaxa.5076.1.6, http://zenodo.org/record/5763298