Key to species of Megaprosternum

1. Females.............................................................................................2

- Males...............................................................................................3

2. Apterous, mesoscutum not divided into scutum and scutellum................................. M. longiceps Azevedo

- Macropterous, mesoscutum divided into scutum and scutellum.............. M. cleonarovorum Gupta & Azevedo sp. nov.

3. Hypopygeal stalk narrow, lateral hypopygeal margin almost straight; aedeagus with apical lobes not curved............................................................................... M. cleonarovorum Gupta & Azevedo sp. nov.

- Hypopygeal stalk wide basally, lateral hypopygeal margin distinctly outcurved; aedeagus with apical lobes curved ventrad..4

4. Head rectangular with sides subparallel; ocelli almost touching one another.............................. M. longiceps

- Head subquadrate with sides convergent posteriorly; ocelli clearly far from one another............ M. pentagonal Azevedo