Key to species of Abanycha, adapted from Martins & Galileo (2014)

1. Elytra with at least most of the anterior third light and the remaining surface dark.................................. 2

– Elytra unicolorous, light with the apex or part of sides dark, or with the anterior third entirely bicolorous................ 4

2(1). Antennae entirely dark. Costa Rica ......................................... A. pectoralis Martins & Galileo, 2004

– Antennae not dark at least on basal antennomeres............................................................ 3

3(2). Scape dark; elytra about as long as 2.5 humeral width. Colombia ........................... A. urocosmia (Bates, 1881)

– Scape reddish; elytra shorter than 2.5 times humeral width. Ecuador .......................... A. bicolor (Gahan, 1899)

4(1). Elytra without dark areas............................................................................... 5

– Elytra with dark are.................................................................................... 6

5(4). Antennae without white antennomeres. Venezuela ............................... A. fasciata Galileo & Martins, 2005

– Antennae with white antennomeres. Ecuador .............................. A. bicoloricornis Galileo & Martins, 2009

6(4). Elytra with orange area anteriorly, distinctly contrasting with the remaining integumental color on basal half; elytra with large dark area posteriorly. Peru ........................................................... A. contamanina sp. nov.

– Elytra without orange area anteriorly contrasting with the remaining integumental color on basal half; elytra with narrow dark area apically......................................................................................... 7

7(6). Pronotum dark brown with two longitudinal yellowish pubescent bands. Guatemala .......... A. pulchricollis (Bates, 1885)

– Pronotum orange without longitudinal pubescent bands. Costa Rica, Panama ................ A. sericipennis (Bates, 1885)