A revision of the genus Aphengium Harold, 1868 (Coleoptera: Scarabaeidae: Scarabaeinae: Ateuchini) Author Silva, Fernando A. B. Author Vaz-De-Mello, Fernando text Zootaxa 2015 3955 4 505 520 journal article 10.11646/zootaxa.3955.4.3 ac08f47a-d395-406a-8461-b1a65d65fc38 1175-5326 244417 B4E21D99-203B-4818-904E-BBA145E5CD33 Key to males of Aphengium Harold 1. Dorsal surface of head with dense foveiform punctures deeply impressed and often rounded ( Figs. 9 , 15 , 21 ). Anterolateral portion of pronotum lacking sleek callus............................................................... 2 - Dorsal surface of head smooth and sleek or punctures almost inconspicuous ( Fig. 27 ). Anterolateral portion of pronotum with a longitudinal and sleek callus ( Fig. 29 ). Male genitalia figs. 34, 40. Brazil (Bahia)..... A. curtum sp. nov. ( Fig. 25 ). 2. Dorsal surface of head with contiguous foveiform punctures over its central portion ( Figs. 9 , 21 ). Anterolateral margin of pronotum explanate ( Figs. 11 , 23 ).................................................................... 3 - Dorsal surface of head with foveiform punctures separated by distance equivalent to at least two times puncture diameter along most of midline ( Fig. 15 ). Anterolateral margin of pronotum not explanate ( Fig. 17 ). Male genitalia figs. 32, 36, 38. Brazil (Espírito Santo and Minas Gerais).......................................... A. cupreum Shipp ( Fig. 13 ). 3. Pronotum with larger and contiguous foveiform punctures on lateral and posterior portions ( Fig. 11 ). Length of parameres one-half that of phallobase ( Fig. 31 ); apical third of parameres slightly narrowed ( Fig. 31 ); fronto-lateral peripheral sclerite (FLP) as in figure 37. Brazil (Rio de Janeiro and São Paulo).......................... A. sordidum Harold ( Fig. 7 ). - Foveiform punctures of lateral and posterior portions of pronotum not contiguous, usually separated by distance equivalent to less than one puncture diameter ( Fig. 23 ). Length of parameres less than one-half that of phallobase ( Fig. 33 ); apical third of parameres abruptly narrowed ( Fig. 33 ); fronto-lateral peripheral sclerite (FLP) as in figure 39. Brazil (Alagoas)............................................................................. A. ibateguara sp. nov. ( Fig. 19 ).