Aclopinae Blanchard, 1850

Ocampo, Federico C. & Mondaca, José, 2012, Revision of the scarab subfamily Aclopinae Blanchard (Coleoptera: Scarabaeidae) in Argentina and Chile, Zootaxa 3409, pp. 1-29 : 3-4

Aclopinae Blanchard, 1850

Type genus. Aclopus Erichson, 1835 .

Description. Small to medium-sized scarabs; color variable, light brown to black. Body elongated. Head and pronotum lacking horns. Mandibles and labrum protruding beyond clypeal apex, clearly visible on dorsal view, labrum and clypeus located on the same plane, shape variable. Antenna with 8–9 antennomeres, antennal club with three lamellae, lamellae small. Pronotum evenly convex, mostly glabrous, with few setae on each side of pronotal disc (at least one seta present), anterior margin with membrane well developed. Elytra: Convex, longer than wide, lateral margins rounded. Surface punctate; punctures sparse to moderately dense, glabrous, or setose; setae moderately long. Elytral striae absent, except for sutural striae; pseudoepipleura not developed. Vent er: Abdomen with 6 sclerotized sternites (only five are clearly visible [2-6]), sutures distinct. Pygidium not exposed beyond elytral apex. Protibia with two teeth, lacking tibial spur. Metatibial spurs separated or subcontiguous, metatarsus may pass between metatibial spurs or not (articulation of the metatarsus adjacent to the metatibial spurs so that the metatarsus can pass in between the spurs, or articulated above them so that the metatarsus pass over the spurs). Tarsal claws simple, symmetrical. Male genitalia symmetrical; aedeagus with parameres slender, variable in length. Genital segment not developed as a genital capsule, and limited to a ventral plate, plate subrectangular or elongatedoval, the ventral plate does not constitute a true spiculum gastrale. Abdominal spiracles placed on the pleural membrane.

Distribution. Argentina, Bolivia, Brazil, Chile.