Key to the Neotropical and Nearctic pupae of Monopelopia

1. Plastron plate elongated and reaching at least one third of the total length of the thoracic horn...................................................................................................................... 2

–. Plastron plate small, rounded and reaching at most one fourth of the total length of the thoracic horn ...................................................................................................... 4 2. Genital sac equal to longer than the anal lobe............................................................... 3 –. Genital sac smaller than the anal lobe; USA, Colombia .................................. boliekae 3. Genital sac equal size to the anal lobe; thoracic horn apex smooth; USA, Europe ........