Key to the Brazilian species of Glenurus

1 Forewing with a transversal brown band at the apex (Fig. 2 b–c)................................................ 2

- Forewing without a transversal brown band at the apex (Fig. 2a)..................................... G. heteropteryx

2 Hind wing apex with two transparent marks at the posterior margin and the large transparent mark at the anterior margin not brown indented posteriorly (Fig. 2c)............................................................. G. peculiaris

- Hind wing apex with one transparent mark at the posterior margin and the large transparent mark at the anterior margin brown indented posteriorly (Fig. 2b)..................................................................... G. incalis