Key to species of Icimauna

(Except I. macilenta)

1 Central area of pronotum with band of yellow pubescence, usually complete from base to apex, always crest-shaped . Brazil (Rio de Janeiro, Santa Catarina), Paraguay, Argentina (Misiones)............................. I. reversa (Bates, 1881)

- Central area of pronotum without band of yellow pubescence (when partially present, never crest-shaped).............. 2

2(1) Antennomeres III and IV equal in length. Costa Rica ......................... I. pallidipennis Martins & Galileo, 2007

- Antennomere III distinctly longer than IV................................................................. 3

3(2) Antennomere III about twice the length of the scape. Costa Rica ....................... I. aysa Martins & Galileo, 1991

- Antennomere III, at most, 1.5 times longer than scape........................................................ 4

4(3) Pronotum and elytra with very sparse erect setae. Bolivia, Brazil (Rondônia)......... I. sarauaia Martins & Galileo, 1991

- Pronotum and elytra with moderately abundant erect setae.................................................... 5

5(4) Length of lower eye lobes at least 1.5 times length of gena; long setae on antennomere IV not reaching apex. Costa Rica ............................................................................. I. angaba Martins & Galileo, 1991

- Length of lower eye lobes at most 1.0 times length of gena; long setae on antennomere IV reaching apex. Brazil (Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul), Argentina (Misiones), Paraguay...................................................................................... .. I. ciliaris (Klug, 1825)