Nectopsyche muhni (Navás 1916a) Material examined. BRAZIL: Maranhão: Caxias, Área de Proteção Ambiental Inhamum, Igarapé Soledade, 04°53'40.8"S, 43°25'18.9"W, 384 m a.s.l., 1 male, 20–21.xii.2014, D. Sousa, G.R. Desidério, S.R.S. Nascimento legs., Pennsylvania trap (CZMA), Caxias, Área de Proteção Ambiental Inhamum, Igarapé Sumidouro do Padre I, 04°53'28.1"S, 43°25'52.3"W, 448 m a.s.l., 4 males, 04–06.ix.2014, S.R.S. Nascimento leg., white sheet with mixed light (CZMA), Caxias, Fazenda Pé da Serra, Rio Itapecuru, 05°07'49.5"S, 43°33'0.40"W, 60 m a.s.l., 2 males, 07.vii.2014, D. Sousa, G.R. Desidério, G. Sousa, M.A.G. Almeida legs., white sheet with mixed light (CZMA), Caxias, MA-034, Igarapé Riachão, 04°56'8.59"S, 43°21'26.65"W, 53 m a.s.l., 9 males, 02–03.vi.2014, D. Sousa, S.R.S. Nascimento, M.A.G. Almeida legs., white sheet with mixed light (CZMA). Known distribution. ARGENTINA, BOLIVIA, BRAZIL (Minas Gerais, Piauí, Rio de Janeiro, Roraima, São Paulo), ECUADOR, GUYANA, PARAGUAY, PERU, SURINAME, VENEZUELA. Remarks. Previously recorded only for the state of Piauí (Takiya et al. 2016) in the Northeast Region, this study provides the first record for the state of Maranhão [Caxias municipality].

Published as part of Desidério, Gleison Robson, Barcelos-Silva, Patrik, De Souza, Wagner Rafael M., Pes, Ana Maria & De Azevêdo, Carlos Augusto S., 2017, Caddisflies (Insecta: Trichoptera) from Maranhão State, Northeast Region, Brazil: A new species, checklist, and new geographical records, pp. 151-171 in Zootaxa 4221 (2) on pages 164-165, DOI: 10.5281/zenodo.248618