Key to species of Genieridium 1. Eyes hidden dorsally (Fig. 64). Central Colombia......... 6.5. G. medinae (Gill & Vaz-de-Mello, 2004) -. Eyes small but visible dorsally............................................................................................................. 2 2(1). Clypeal teeth lacking (Figs. 57, 68)...................................................................................................... 3 -. Two clypeal teeth present...................................................................................................................... 4 3(2). Elytral striae without evident punctures. Venezuela.......................... 6.2. G. bordoni (Martínez, 1992) -. Elytral striae with ocellated punctures. Southern Brazil..................... 6.6. G. paranense (Arrow, 1932) 4(2). Clypeal teeth very acute, sides almost parallel in the apical part (Figs. 60, 70).................................... 5 -. Clypeal teeth obtuse, short, and equilateral (Figs. 55, 62).................................................................... 6 5(4). Clypeal teeth arising from below clypeal margin (Fig. 60). Central Brazil, Northern Argentina, Paraguay and Bolivia.................................................................................... 6.3. G. cryptops (Arrow, 1913) -. Clypeal teeth at same plane as clypeal margin (Fig. 70). Southeastern Brazil.................................................................................................................. 6.7. G. zanunciorum (Vaz-de-Mello & Canhedo, 1998) 6(4). Elytral striae straight, without punctures. Central Brazil and Paraguay................................................................................................................................................................ 6.1. G. bidens (Balthasar, 1938) -. Elytral striae marked by inconspicuous punctures that make striae appear sinuated. Northeastern and Central Brazil....................................................... 6.4. G. margareteae (Génier & Vaz-de-Mello, 2002)

Published as part of Vaz-De-Mello, Fernando Z., 2008, Synopsis of the new subtribe Scatimina (Coleoptera: Scarabaeidae: Scarabaeinae: Ateuchini), with descriptions of twelve new genera and review of Genieridium, new genus, pp. 1-75 in Zootaxa 1955 on pages 27-28