Neotropical Region

Onorius (Coleoptera, Scarabaeidae)

Onorius inexpectatus habitus of male

Medium-sized beetles with uniform black coloration. Dorsal surface shiny, punctate with rounded punctures. Clypeus symmetrical or subsymmetrical, slightly convex anteriorly. Mandibles of the same length, feebly visible in dorsal view. Labrum hidden under clypeus. Head without suturae and medial tubercle. Pronotum narrower than elytra in both sexes; lateral and basal margins bordered and widely rounded, posterior angles rounded, anterior margin not bordered. Disc of pronotum with a small fossa medioanteriorly in male, evenly convex in female. Elytra without distinct striae visible as either depressed lines or puncture rows, with well-developed humeral and apical humps. Scutellum triangular...

Genus Paraegidium (Scarabaeidae, Orphninae)

Orphninae, Paraegidium costalimai

Body about 8 mm long, brown to dark-brown. Mandibles subsymmetrical. Clypeus with protruding horn-like anterior angles in males, somewhat rectangular, with slightly upturned anterior margin in females. Pronotum excavated medially, with 2 ridges aside the excavation in males, slightly depressed medially in females. Propleurae with carinae separating anterolateral areas from basal area. Scutellum narrowly rounded apically, about 1/10 length of elytra. Elytra convex, with marked humeral umbones, without distinct striae or carinae, densely punctate with U-shaped punctures. Wings fully developed. Metepisternon triangular, its posterior angle somewhat triangular and is situated in the distinct concavity of epipleuron...

Aegidiellus (Coleoptera, Scarabaeidae)

Orphninae, Aegidiellus alatusBody mid-sized (length about 10 mm), brown to dark-brown. Mandibles subsymmetrical. Clypeus without tubercles, horns or ridges. Pronotum with deep excavation in the middle, two horns bordering the excavation near anterior margin, and with a tubercle medially on the anterior margin in most males; females with pronotum impressed anteriorly on disc and with a tubercle medially on the anterior margin. Propleurae with carinae separating anterolateral areas from basal area...

Genus Aegidinus (Scarabaeidae, Orphninae)

Orphninae, Aegidinus brasiliensis

Body small to mid-sized (length 6 mm to 12 mm), reddish brown to dark-brown. Mandibles subsymmetrical. Clypeus with tubercle or horns on anterior margin medially in males, without horn in females. Pronotum variably excavated medially in males, convex to depressed medially in females; anterior margin of pronotum in males with a tubercle or horn medially. Propleurae with carinae separating anterolateral areas from basal area. Scutellum narrowly rounded apically, about 1/15 length of elytra. Elytra convex, with marked humeral umbones, with striae marked with elongated punctures. Wings fully developed. Metepisternon triangular, its posterior angle is rounded to triangular and is situated in the distinct concavity of epipleuron. Anterior tibiae with 3 strong outer teeth in both sexes and with a smaller medial tooth in majority of males. Phallobase tube-shaped with strongly sclerotized ventral side but without differentiation of ventral and dorsal sclerites. Parameres relatively short, with complex shape, asymmetrical in one species, apices without setae...

Genus Aegidium (Scarabaeidae, Orphninae)

Orphninae, Aegidium columbianum

Body mid-sized (length 10 mm to 20 mm), brown to dark-brown. Mandibles subsymmetrical. Clypeus without tubercles, horns or ridges. Pronotum with deep excavation in the middle, two horns or ridges bordering the excavation near anterior margin, and with a tubercle medially on the anterior margin in most males; females with pronotum convex, without armature. Propleurae with carinae separating anterolateral areas from basal area. Scutellum narrowly rounded apically, about 1/10 length of elytra. Elytra convex, with marked humeral umbones and 2 low ridges in basal half. Wings fully developed or vestigial. Metepisternon triangular, its posterior angle is rounded to triangular and is situated in the distinct concavity of epipleuron...