Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species Author Silveira, Luiz Felipe Lima Da Author Mermudes, José Ricardo M. text Zootaxa 2014 3835 3 325 337 journal article 10.11646/zootaxa.3835.3.2 a40c49b1-75a8-489c-a2a1-42807b68ebb3 1175-5326 229041 C8338F48-3E18-477D-A134-11778ABD6781 Ybytyramoan praeclarum Silveira and Mermudes sp. nov. ( Figs. 1–25 , 47 ) Etymology. praeclarum means remarkable in Latin. Adjective, gender neutrum. Diagnosis. Body shape ellipsoidal ( Fig. 16 ). Antennal alveolus with antennifer process indistinct. Pronotum widest posteriad ( Figs. 8 , 18 ). Abdominal sterna VI and VII with lanterns anteriorly rounded, straight posteriad, with posterolateral rounded projections (billycock-shaped), almost as long as sterna length, maximum width as wide as 3/4 sterna width ( Figs 19 ). Description of the male. ( Figs. 1–25 ) Body-shape ellipsoidal. Antennal alveolus with antennifer process indistinct. Antennae with antennomeres from III slightly decreasing in length toward apex up to subapical; apical antennomere slightly longer than subapical. Labrum somewhat straight. Pronotum widest posteriad, semilunar. Elytra almost 4x longer than wide, widest medially. Abdominal tergum IX and pygidium generally exposed. Abdominal sterna VI and VII with lanterns anteriorly rounded, straight posteriad, with posterolateral rounded projections (billycock-shaped), almost as long as sterna length, maximum width as wide as 3/4 sterna width. Pygidium with posterior margin slightly mucronate. Phallum constricted at basal 1/2, sclerotized portion slightly shorter than paramere, with paired subapical, laterally-oriented teeth, and anterior margin straight in dorsal view. FIGURES 1–7. Ybytyramoan praeclarum sp. nov. head. 1 , frontal. 2 , ventral. 3 , dorsal. 4 , lateral. 5 , posterior. 6 , occipital. 7 tentoria detail, frontal. Scale bar 1–7 = 1,0 mm. FIGURES 8–12. Ybytyramoan praeclarum sp. nov. 8–10 prothorax. 8 , pronotum, dorsal. 9 - prothorax, posterior. Note the proendosternite. 10 , prosternum, ventral. 11–12 , allinotum. 11 , dorsal. 12 , lateral. Scale bar 8–12 = 1,0 mm. Colour: Body overall dark-brown, except by abdominal sterna VI and VII, which are dark-brown on outer margins and light-yellow on the area around lanterns; and a central light-brown strip on metasternum. Pronotum light-yellow, contour and a central strip on disc dark-brown, sometimes with pair of pink vittae. Elytra dark-brown, outer margins light-yellow except by outer contour, dark-brown. Immature stages and female unknown. Biology. Fireflies active from twilight through the first hours of the night, flashing. Remarks. This species can be easily distinguished from congenders by pronotum widest posteriad and lanterns anteriorly rounded, straight posteriad, with posterolateral rounded projections (billycock-shaped). Type . Holotype male ( DZRJ ). BRAZIL . Rio de Janeiro. Teresópolis, P.N. Serra dos Órgãos, Vale das Antas, 2,000m , GPS S 22.464495 , W 43.042886 , 1-2/X/2011 , Silveira, L, Dias, G. col. Paratypes ( 8 males ). Same data as holotype ( DZRJ ).