Leptophlebiidae Banks, 1900 (Insecta, Ephemeroptera) from Maranhão state, Brazil Author Nascimento, Stênio Raniery de Sousa Author Lima, Lucas Ramos Costa Author de Azevêdo, Carlos Augusto Silva text Check List 2020 2020-05-19 16 3 579 591 http://dx.doi.org/10.15560/16.3.579 journal article 10.15560/16.3.579 1809-127X Simothraulopsis demerara Traver, 1947 Figures 19 , 38 Thraulus demerara Traver 1947: 150 ; Traver 1960: 73 . Simothraulopsis surinamensis Demoulin 1966: 18 ; Hubbard 1982: 266 . Simothraulopsis demerara — Domínguez et al. 1997: 146 (synonym of S. surinamensis ). Simothraulopsis demerara — Kluge 2007: 388 ; Salles et al. 2010: 306 ; Gama-Neto and Hamada 2014: 285 ; Nascimento et al. 2017: 9 ; Faria and Salles 2019: 376 ; Raimundi 2019: 40 . Diagnosis. Male imago: 1) general coloration: thorax orangish brown, abdomen grayish brown ( Fig. 19 ); 2) forewing with two costal cross veins basal to bulla; 3) hind wing with costal projection well developed, forming an acute angle, located approximately 2/3 distance from base to apex of wing; 4) abdominal segments II–V with translucent white basal bands ( Fig. 19 ); 5) penis projection spine-like, long and anteriorly directed ( Fig. 38 ); 6) penis lobes fused on basal ⅓ ( Fig. 38 ); 7) ventral region of penis lobes without a well-marked sclerotized region ( Fig. 38 ). Adapted from Traver (1947) . Figures 19–28. Dorsal habitus of some species of Leptophlebiidae (Ephemeroptera) found in Maranhão state, Brazil. 19. Simothraulopsis demerara . 20. S. diamantinensis . 21. S. janae . 22. S. sinuosus . 23. Thraulodes luizgonzagai . 24. T. marreroi . 25. T. sternimaculatus . 26. Tikuna bilineata . 27. Traverella maranhensis . 28. Ulmeritoides flavopedes . Scale bars = 2 mm. Geographical distribution. Brazil : states of Acre , Amapá , Amazonas, Bahia , Ceará , Espírito Santo , Goiás , Maranhão *, Mato Grosso , Pará, Paraná , Pernambuco , Piauí Rondônia , Roraima , and Tocantins . French Guy- ana, Guyana , Surinamee, and Venezuela . Material examined. BRAZIL • 7 imagos ♂ ; Maranhão state , Caxias municipality, Pé da Serra , Rio Itapecuru ; 05°07′28.5″S , 043°33′02.3″W ; 68 m a.s.l. ; 01 Feb. 2014 ; S. R . S. Nascimento , D.C. Sousa and G. R . D. Gomes leg; light trap ; LEAq . • 6 imagos ♂ ; same locality, 19 Dec. 2017 . • 1 imago ♂ ; 20 Dec. 2017 ; S. R . S. Nascimento , J.I.S. Jesus , D.C. Sousa and M.A.G. Almeida leg; light trap ; LEAq . • 9 imagos ♂ ; 08 Mar. 2018 ; S. R .S. Nasci- mento, L. R . C. Lima , M.A.G. Almeida , J.A.O. Rodrigues and D.A. Barbosa leg; light trap ; LEAq . • 5 imagos ♂ ; 19 Nov. 2018 . • 9 imagos ♂ ; 21 Nov. 2018 ; S. R . S. Nascimento and J.I.S. Jesus leg; light trap ; LEAq . • 3 imagos ♂ ; Ma- ranhão state, Caxias municipality, Mangueira , Rio Itapecuru ; 05°07′05.5″S , 043°33′47.8″W ; 69 m a.s.l. ; 09 Mar. 2018 ; S. R . S. Nascimento , L. R . C. Lima , M.A.G. Almeida , J.A.O. Rodrigues and D.A. Barbosa leg; light trap ; LEAq . • 13 imagos ♂ ; Maranhão state , Caxias municipality, Ri- acho Guarimã ; 04°50′02.9″S , 043°29′06.1″W ; 51 m a.s.l. ; 16 Jun. 2018 ; S. R . S. Nascimento leg; light trap ; LEAq . • 18 imagos ♂ ; Maranhão state , Caxias municipality, Bu- riti do Meio Municipal Environmental Protection Area , Riacho Jatobá ; 04°54′34.4″S , 043°07′00.7″W ; 81 m a.s.l. ; S. R . S. Nascimento leg; light trap ; LEAq . • 3 imagos ♂ ; Maranhão state , Carolina municipality, National Park Chapada das Mesas , Farinha River , Cachoeira da Prata Waterfall ; 06°59′37.8″S , 047°09′58.1″W ; 201 m a.s.l. ; 17 May. 2018 ; L. R . C. Lima and S. R . S. Nascimento leg; light trap ; LEAq . • 3 imagos ♂ ; Maranhão state , Codó municipality, Rio Saco ; 04°31′57.3″S , 043°54′48.4″W ; 62 m a.s.l. ; 11 Sep. 2018 ; S. R . S. Nascimento leg; light trap ; LEAq . • 1 imago ♂ ; Maranhão state , Timbiras mu- nicipality, Caixa D’água, Rio Itapecuru ; 04°16′41.0″S , 043°57′16.3″W ; 21 m a.s.l. ; 13 Sep. 2018 ; S. R .S. Nasci- mento leg; light trap ; LEAq . • 1 subimago ♂ ; 1 exuviae ♂ ; Maranhão state , Aldeias Altas municipality, Riacho Poção ; 04°40′20.5″S , 043°32′21.4″W ; 52 m a.s.l. ; 04 Oct. 2018 ; S. R . S. Nascimento leg; Creation ; LEAq . • 11 ima- gos ♂ ; Maranhão state , Codó municipality, Rio Saco , BR316 ; 04°37′29.4″S , 043°54′09.1″W ; 63 m a.s.l. ; 22 Oct. 2019 ; S. R . S. Nascimento , L. R . C. Lima and J.I.S. Jesus leg; light trap ; CZMA .