Revision of the scarab subfamily Aclopinae Blanchard (Coleoptera: Scarabaeidae) in Argentina and Chile Author Ocampo, Federico C. Author Mondaca, José text Zootaxa 2012 3409 1 29 journal article 10.5281/zenodo.210632 d241173d-b901-4ba7-878d-04546e8d1200 1175-5326 210632 Gracilaclopus caceresi Ocampo & Mondaca , new species ( Figs. 8–9 , 24 , 31 ) Diagnosis. This species is distinguished from the other species of Gracilaclopus by the following combination of characters: labral apex deeply indented in middle; head black, body light brown with scutellum same color as elytra (light brown); pronotum with a transversal row of setae in middle on each side of disc, setae sparse, long; size < 5 mm ; male genitalia as Fig. 24 . FIGURES 8–9. Gracilaclopus caceresi , male. Description. Holotype male. Length 4.07 mm , width 1.57 mm . Color: Head black, pronotum and elytra light brown; legs, antennae, and mouthparts brown; ventral surface brown. Head ( Fig. 8 ): Frons flat on apical half, convex at base, surface sparsely punctate, glabrous. Clypeus strongly transverse; lateral margins oblique; anterior margin straight, slightly reflexed, frontal area of anterior margin oblique; frontoclypeal suture obsolete, surface densely punctate. Labral shape subrectangular in dorsal view apex strongly indented in middle, strongly reflexed, glabrous. Pronotum ( Fig. 9 ): Surface sparsely punctate, with one row of sparse setae on each side of disc; setae long, slender. Marginal bead present in all margins, reduced on posterior margin at middle. Anterior angle nearly right-angled; posterior angles broadly rounded. Scutellum : Triangular , apex rounded, surface punctate at base, smooth at apex. Elytra : Surface punctate, punctures sparse, setose, setae moderately long. Legs : Mesotibiae and metatibiae with two transverse carinae. Mesotibial and metatibial apex with fringe of spine-like setae. Male genitalia ( Fig. 24 ): Parameres las long as phallobase, curved at middle; apex rounded not club-like. Type material : Holotype male at IAZA labeled: “ ARGENTINA : San Juan / Salinas de Mascasín. 423 m / S 31°25’39” , W 67°04’05” / XII-12-2003 . F. C. Ocampo”; “ Gracilaclopus / caceresi / Ocampo & Mondaca / HOLO- TYPE ” (red label). Paratypes (all male). Seventeen paratypes (11 at IAZA [three in 95% Et-OH], three FVMC , three JMEC ) labeled as holotype except: “ Gracilaclopus / caceresi / Ocampo & Mondaca / PARATYPE ” (yellow label). Type locality. Argentina , San Juan, Salinas de Mascasín ( 31°25’39”S , 67°04’05”W ). Etymology. We take great pleasure in naming this species after senior author’s friend José María Cáceres. Distribution ( Fig. 31 ). ARGENTINA . San Juan : Salinas de Mascasín (18). Temporal distribution. December (18).