Key to Micronotus species

1. Mid-femur without conspicuous carinae. Pronotum without exceeding the apex of the abdomen and the hind femur (Figs. 1B, 2B, 4B, 5B); pronotal disc with a wavy midline from anterior to the posterior edge (Figs. 1A, 2A, 4A, 5A)............ ... 3

‒ Mid femur conspicuously carinate. Pronotum exceeding the apex of the abdomen and hind femur (Fig. 3B); pronotal disc with a small hump at the level of the prozone, thereafter no additional undulations (Fig. 3A)..................... M. asperulus

2. Ocelli conspicuous, as wide as the antennal pedicelus (Fig. 1C). Hind wings reduced, especially to the female. Fastigium rounded, slightly protruding in the middle of the eyes in lateral view (Fig. 1A)...................... M. quadriundulatus

‒ Ocelli of medium size, as wide as half the width of the antennal pedicelus (Figs. 4C and 5C). Hind wings moderately developed, failing to reach the pronotal apex. Fastigium conical, protruding conspicuously from the middle of the eyes in lateral view (Figs. 4A and 5A)........................................................................ M. andeanum n. comb.