Simothraulopsis diamantinensis Mariano, 2010

Nascimento, Stênio Raniery de Sousa, Lima, Lucas Ramos Costa & de Azevêdo, Carlos Augusto Silva, 2020, Leptophlebiidae Banks, 1900 (Insecta, Ephemeroptera) from Maranhão state, Brazil, Check List 16 (3), pp. 579-591 : 586

Simothraulopsis diamantinensis Mariano, 2010 Figures 20, 39

Simothraulopsis diamantinensis Mariano 2010:130 ; Nascimento et al. 2017: 30; Boldrini and Krolow 2017: 3; Faria and Salles 2019: 376.

Diagnosis. Male imago: 1) general coloration: thorax dark brown, abdomen orangish brown ( Fig. 20); 2) hind wing with costal projection almost forming a right angle, located approximately ½ distance from base to apex of wing, without a cross vein; 3) terga III–V with anterior region translucent white ( Fig. 20); 4) penis projection spine-like, short (less than half of total length of penis lobes) and directed to the midline of the body ( Fig. 39); 5) penis lobes fused on basal ¼ ( Fig. 39); 6) ventral region of penis lobes without a well-marked sclerotized region ( Fig. 39). Adapted from Mariano (2010).

Geographical distribution. Brazil: states of Bahia, Maranhão *, Paraná, and Tocantins.

Material examined. BRAZIL • 3 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.; 08 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 . • 2 imagos ♂; Maranhão state, Caxias mu- nicipality, Mangueira, Rio Itapecuru ; 05°07′05.5″S, 043°33′47.8″W; 69 m a.s.l.; 09 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; CZMA .