A new species of Neurostigma, collected in an area of Atlantic Rainforest, in the Brazilian state of Minas Gerais, is described and illustrated, namely: Neurostigma atlanticum sp. nov. The first record of Neurostigma garcialdretei Mendivil-Nieto, Gonzalez-Obando & Carrejo-Gironza, 2020, from Brazil was made.

The holotype of the Neurostigma xanthopterum New, 1980 is here illustrated based on photographs. We also describe and illustrate a previously unknown female individual that is assigned to this species. New records for five localities in the Brazilian state of Amazonas, one in the Brazilian state of Acre and another in the Brazilian state of Amapá, are presented. The mouthparts of both sexes are here describe and illustrate. Thirteen types of variation and anomalies in the fore-hindwing veins were found. We found unique patterns in the number and shape of transverse veins in the pterostigma between individuals. We also identified a large variation in the denticles present in the lacinia. Therefore, we suggest these variable characteristics (fore-hindwing veins and lacinia denticles) are not to be used for the diagnosis of species of this genus. A revised diagnosis of N. Xanthopterum is also presented.

This paper provided a list of all new Brazilian Hexapoda species described in 2020. Furthermore, based on the information extracted by this list, we tackled additional questions regarding the taxa, the specialists involved in the species descriptions as well as the journals in which those papers have been published. We recorded a total of 680 new Brazilian species of Hexapoda described in 2020, classified in 245 genera, 112 families and 18 orders. These 680 species were published in a total of 2019 articles comprising 423 different authors residing in 27 countries. Only 30% of these authors are women, which demonstrates an inequality regarding sexes. In relation to the number of authors by species, the majority of the new species had two authors and the maximum of authors by species was five. We also found inequalities in the production of described species regarding the regions of Brazil, with Southeast and South leading. The top 10 institutions regarding productions of new species have four in the Southeast, two at South and with one at North Region being the outlier of this pattern. Out of the total 219 published articles, Zootaxa dominated with 322 described species in 95 articles. The average impact factor was of 1.4 with only seven articles being published in Impact Factors above 3, indicating a hardship on publishing taxonomic articles in high-impact journals. The highlight of this paper is that it is unprecedent, as no annual record of Hexapoda species described was ever made in previous years to Brazil.

The female of Euplocania cearaensis Silva-Neto, García Aldrete & Rafael, 2019 is described and illustrated, new records on variation in the fore and hind wings venation and an update of the diagnosis are provided. The material of this study where from two localities in the Parque Nacional de Ubajara, Ubajara, Ceará, Brazil.

The unknown male of Ptiloneura baiana (Silva Neto, García Aldrete & Rafael) is described and illustrated, variation in the forewings venation and an update of the diagnosis are presented. Key words: Taxonomy, Neotropics, Epipsocetae