Cephaloleia bucki Uhmann 1957

Elongate; subdepressed; shining; brownish-yellow; head black; pronotum black with brownish-yellow lateral margin; antennomeres 8–11 darker. Head: vertex finely punctate, medial sulcus absent; eye convex; frons not projecting; slightly depressed between eyes. Antenna: as long as head and pronotum combined; robust, cylindrical; antennomere 1 subequal to 3; 2 shorter than 1; 4–5 subequal in length, slightly longer than wide, each shorter than 3; 6–10 subequal in length, each shorter than 5; 11 2× length of 10, acutely pointed at apex; 1–2 punctate with scattered setae; 3–11 setose. Pronotum: transverse; lateral margin sinuate basally then straight and rounding to anterior angle, slightly canaliculate; anterior angle rounded, not produced; posterior angle acute; anterior margin curved anteriorly; disc subconvex, nearly impunctate; surface sparsely, irregularly punctate, punctures larger and denser basally; transverse basal impression present medially; pronotal length 1.0–1.1 mm; pronotal width 1.3–1.4 mm. Scutellum: pentagonal; impunctate. Elytron: lateral margin straight, smooth, margined; apex rounded; sutural angle without tooth; humerus rounded, not produced; slightly constricted behind humerus; subconvex; finely punctate-striate; elytral length 2.9–3.0 mm; elytral width 1.3–1.4 mm. Venter: pro-, meso-, and metasterna punctate; abdominal sterna punctate, each puncture with pale seta; suture between sterna 1 and 2 complete; male with apical margin of sternite 5 broadly rounded, female strongly truncate, convex medially. Leg: slender; punctate; femur and tibia with pale seta in each puncture; tibia with fringe of setae on inner margin of apex. Total length: 3.9–4.0 mm.

Brazil (Rio Grande do Sul).