Key to species of Palmaraltica

1 Pro- and mesotarsal claws bifid; metatarsal claws simple. Elytra dark red with yellow band........................... 2

- All tarsal claws bifid. Head black, with exception of yellow antennal calli, interantennal callus and frontal ridge; antennomeres 1–3 yellow, 4–11 black; legs and underside black, with exception of yellow distal half of femora; pronotum yellow; elytral suture and apical and lateral borders, including elytropleura, yellow (Figure 6)................................................................................................... Palmaraltica yepezi Bechyné & Bechyné, 1969

2 Head and pronotum dark red to black, with slight metallic blue-green sheen; legs, antennae and underside dark red; elytra yellow, with exception of dark red coloration at anterior third and posterior sixth (Figure 4)............................................................................................. Palmaraltica heteronycha Bechyné, 1959

- Head and pronotum dark red; legs, antennae and underside dark red to black; elytra red, with exception of yellow at apical 1/3 rd (Figure 5).................................................. Palmaraltica tomentosa (Jacoby, 1880), comb. nov.