Oblong-elongate; yellowish or reddish; pronotal and elytral markings extremely variable. Head: medial sulcusfaint; frontal horn broad, scarcely narrows to apex, truncate or slightly rounded; vertex concave between eyes,smooth; medial sulcus absent. Antennae: antennomere 1 robust, thickened, with projection on inner apicalmargin, flattened ventrally, projection reaches to near apex of 2; 2 cylindrical, short, 1/4 length of 3; 3cylindrical, longest, longer than 1 and 2 combined; 4–5 subequal in length, combined subequal in length to 3;6–7 subequal in length, each shorter than 4; 8–10 decreasing in length, wider and shorter than preceding; 11rounded at apex; 1–10 with scattered setae, 11 setose. Pronotum: transverse; lateral margin straight, nearlyparallel, converging at apex; anterior angle angulate; posterior angle acute; convex; disc impunctate; shallowdepression on each side; sides deeply, sparsely punctate; pronotal length 2.0–2.4 mm (n=20); pronotal width3.0–3.4 mm. Scutellum: smooth. Elytron: convex; lateral margin straight until exterior apical angle, thenrounded; apical margin produced posteriorly to form short triangular reflexed process; suture angularlynotched; suture without tooth; with 10 puncture rows plus short scutellar row of slightly impressed punctures;elytral length 7.6–11.1 mm; elytral width 4.4–5.3 mm. Venter: black. Total length: 10.0–13.7 mm.Larva. (from Maulik 1932). Total length 12–19 mm. Width 6.5–9.0 mm. Very similar to
Ch. bicolor. Finelyrugose dorsally, surface slightly shining.
Larval host plants. Heliconia imbricata and Calathea insignis Peterson. Adults collectedfrom Heliconia lathispatha; Heliconia pogonantha Cuford, Heliconiairrasa, Heliconia mariae Hook.
Comparative notes. This species can be distinguished by the angulate elytral apices, by antennomere 3 being longer than 1 and 2 combined, and by antennomere 2 being cylindrical.
Distribution. Brazil, Colombia, Costa Rica, Ecuador, Guatemala, Nicaragua, Panama.
