''Megaloprepus'' is a genus of large Neotropical

damselflies Damselflies are flying insects of the suborder Zygoptera in the order Odonata. They are similar to dragonflies (which constitute the other odonatan suborder, Epiprocta) but are usually smaller and have slimmer bodies. Most species fold the win ...

in the family

Coenagrionidae Coenagrionidae is a family of damselflies, also known as pond damselflies, in the order Odonata and the suborder Zygoptera. The Zygoptera are the damselflies, which although less known than the dragonflies, are no less common. More than 1,300 spec ...

, commonly known as helicopter damsels. There are four species distributed from Mexico to Ecuador and Peru.Feindt, W., & Hadrys, H. (2022)
The damselfly genus Megaloprepus (Odonata: Pseudostigmatidae): Revalidation and delimitation of species-level taxa including the description of one new species.
''Zootaxa'', 5115(4): 487-510. Species include: * '' Megaloprepus brevistigma'' * ''

Megaloprepus caerulatus ''Megaloprepus caerulatus'', also known as the blue-winged helicopter, is a forest giant damselfly of the family Coenagrionidae. Forest giant damselflies were previously recognized as their own family, Pseudostigmatidae. ''M. caerulatus'' is fou ...

'' * '' Megaloprepus diaboli'' * '' Megaloprepus latipennis''

References

Zygoptera genera Coenagrionidae Taxa named by Jules Pierre Rambur Insects of Mexico {{Coenagrionidae-stub