Four new species of Macrostomus Wiedemann and a checklist of Empididae s. str (Diptera) from Peru Author Rafael, José Albertino 0000-0002-0170-0514 Instituto Nacional de Pesquisas da Amazônia, Coordenação de Biodiversidade, Manaus, Amazonas, Brazil. jarafael @ inpa. gov. br; https: // orcid. org / 0000 - 0002 - 0170 - 0514 jarafael@inpa.gov.br Author Marques, Dayse Willkenia A. 0000-0001-7260-5760 Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Entomologia, Manaus, Amazonas, Brazil. willkenia @ gmail. com; https: // orcid. org / 0000 - 0001 - 7260 - 5760 willkenia@gmail.com text Zootaxa 2021 2021-06-08 4981 3 506 530 journal article 5899 10.11646/zootaxa.4981.3.5 fce50f60-b834-424f-9a19-cf4601ffd2a3 1175-5326 4921345 3F94E1C8-2F49-4B85-86E3-48341F17A358 Macrostomus amazonensis species-group The following species fits best in the M. amazonensis species-group as described by Rafael & Cumming (2015) .