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 Hermanellopsis arsia Savage & Peters, 1983 Figures 12 , 31 Hermanellopsis arsia Savage and Peters 1983: 574 ; Domínguez et al. 2006: 399 ; Raimundi et al. 2017: 581 . Diagnosis. Male subimago: 1) head brownish yellow, upper portion of compound eye brownish black ( Fig. 12 ); 2) wing with posterior, well-developed costal projection; 3) portion posterior subgenital plate slightly straight, posterior margin with a tuft of thorns sclerosed later designed ( Fig. 31 ); 4) straight penis tapering toward the apex ( Fig. 31 ). Adapted from Savage and Peters (1983) . Figures 9–18. Dorsal habitus of some species of Leptophlebiidae ( Ephemeroptera ) found in Maranhão state, Brazil. 9. Askola emmerichi . 10. Farrodes xingu . 11. Fittkaulus cururuensis . 12. Hermanellopsis arsia . 13. Hydromastodon sallesi . 14. Hydrosmilodon gilliesae . 15. Leentvaaria palpalis . 16. Miroculitus emersoni . 17. Miroculis ( Atroari ) duckensis . 18. Paramaka convexa . Scale bars = 2 mm. Geographical distribution. Brazil : states of Amazonas, Maranhão *, and Roraima . Material examined. BRAZIL • 16 subimagos ♂ ; Maranhão state , Caxias municipality, Inhamum Municipal EnvironmentalProtectionArea, RiachoAreiaBranca; 04°53′ 34.9″S , 043°26′11.1″W ; 118 m a.s.l. ; 13 Aug. 2019 ; S. R . S. Nascimento leg; Pennsylvania trap ; CZMA , LEAq .