A review of the Neotropical moth genus Bardaxima (Lepidoptera: Notodontidae: Nystaleinae), with special reference to the species occurring in Brazil Author Becker, Vitor Osmar Serra Bonita Reserve. Caixa Postal 01, 45880 - 000 Camacan, Bahia, Brazil. Corresponding author: Vitor Osmar Becker (becker. vitor @ gmail. com) becker.vitor@gmail.com text Zoologia 2021 e 63526 2021-06-28 38 1 14 http://dx.doi.org/10.3897/zoologia.38.e63526 journal article 10.3897/zoologia.38.e63526 1984-4689 13176203 DC7BC4A9-25B6-4F70-B219-65B87F506572 Bardaxima procne ( Schaus, 1892 ) Figs 31–33 , 57–59 Symmerista procne Schaus, 1892: 336 . Lectotype female, BRAZIL : [RJ], Corcovado (USNM), designated by Schintlmeister (2016: 432) [examined]. Gisara meyeri Schaus, 1928: 32 . Lectotype male, FRENCH GUIANA : St. Laurent (USNM), designated by Schintlmeister (2016: 323) [examined]. Syn. nov. Diagnosis. Male ( Fig. 31 ) FW length 23–25 mm ( 52–56 mm wingspan), female ( Figs 32, 33 ) FW length 30–33 mm ( 66–72 mm wingspan). FW gray, minutely mottled blackish; large white patch on tornus; termen dark fuscous, from apex to Cu1. Thorax, dorsally, with a conspicuous white dot at middle. HW dark gray, cilia white. Distal margin of 8 th male sternite ( Fig. 59 ) shallowly concave. Male genitalia ( Fig. 57 ): uncus thin, tapering distad to a sharp tip; socii small, thin. Figures 19–30. Bardaxima , Stragulodonta and Elasmia specimens, dorsal view: (19) B . ionia , female, Turrialba, Cartago, Costa Rica; (20) B. dissona , male holotype, Peru; (21, 22) B. subrutila male, female, Camacan, Bahia, Brasil. (23–25) B. terminalba : (23, 24) male, female, Campos do Jordão, São Paulo, Brazil; (25) male holotype, São Paulo, São Paulo, Brazil. (26–28) S. stragula : (26) male, Jenaro Herrera, Loreto, Peru; (27) female, Vilhena, Rondônia, Brazil; (28) male holotype, Surinam. (29, 30) E. perses : (29) male, Cacaulândia, Rondônia, Brazil; (30) female, Planaltina, Distrito Federal, Brazil. Figures 31–38. Bardaxima specimens, dorsal view: (31–33) B. procne : (31) male, Vilhena, Rondônia, Brazil; (32) female, Cacaulândia, Rondônia, Brazil; (33) female, Jenaro Herrera, Loreto, Peru. (34–38) B. sambana : (34) male holotype, Costa Rica; (35) male, Porto Seguro, Bahia, Brazil; (36) female, Guaramiranga, Ceará. Brazil; (37) male, Los Bancos, Pichuincha, Ecuador; (38) male, Esquipulas, Chiquimula, Guatemala. Figures 39–50. Bardaxima , male genitália, aedoeagus, 8 th male abdominal segment, ventral view: (39–41) B. lucilinea ; (42–44) B. fulgurifera ; (45–47) B. donatian ; (48–50) B. ionia . Valva broad, costa slightly curved at distal third; sacculus long, narrow, reaching tip of valva, with pair of thin, sharp pointed teeth at middle. Aedoeagus ( Fig. 58 ) curved ventrad; three sharp pointed teeth at apex; vesica smooth. Material studied. Types ; 12 males (g.s. 4536, 5615), 2 females ( VOB ); 2 males ( AMC ) . Distribution. French Guiana to Brazil , throughout the Amazon region, south to São Paulo . Remarks. Easily distinguished from other similar species by the conspicuous white dot on the center of thorax, dorsally. Specimens tend to be darker (= G . meyeri ) towards the northern portion of the distributional range. Genitalia of both phenotypes, as well of intermediate phenotypes, are identical. It is very likely that B. brauni , the next species, from Colombia , is just a local, darker phenotype of B. procne .