Libelluloidea is a superfamily of

dragonflies A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of true dragonfly are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threa ...

. A 2007 phylogenetic analysis suggests that this superfamily contains four families:Ware, J., May, M., & Kjer, K. (2007)
Phylogeny of the higher Libelluloidea (Anisoptera: Odonata): an exploration of the most speciose superfamily of dragonflies.
''Molecular Phylogenetics and Evolution'', 45(1), 289-310. *

Corduliidae The Corduliidae, also knowns as the emeralds, emerald dragonflies or green-eyed skimmers, is a family of dragonflies. These dragonflies are usually black or dark brown with areas of metallic green or yellow, and most of them have large, emerald-gr ...

* Gomphomacromiidae * Libellulidae *

Macromiidae The insect family Macromiidae contains the dragonfly species known as cruisers or skimmers. They tend to fly over bodies of water (and roads) straight down the middle. They are similar to Aeshnidae in size, but the eyes are green and just barely ...

Some authors include other families here, including Synthemistidae and the monotypic Neopetaliidae.Carle, F. L., Kjer, K. M., & May, M. L. (2008)
Evolution of Odonata, with special reference to Coenagrionoidea (Zygoptera).
''Arthropod Systematics & Phylogeny'', 66(1), 37-44.

References

* Dragonflies Insect superfamilies {{Libelluloidea-stub