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-green eyes. The larvae are black, hairy-looking, and usually semiaquatic. This family include species called "baskettails", "emeralds", "sundragons", "shadowdragons", and "boghaunters". They are not uncommon and are found nearly worldwide, but some individual species are quite rare. Hine's emerald dragonfly, for example, is an endangered species in the United States.
Dorocordulia, commonly called little emeralds or little barlasses, is a genus of dragonfly in the family Corduliidae found in North America.
Somatochlora elongata, known generally as the "ski-tipped emerald" or "ski-tailed emerald", is a species of emeralds in the family Corduliidae. It is found in North America.
Epitheca canis, the beaverpond baskettail, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora albicincta, the ringed emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Epitheca sepia, the sepia baskettail, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Helocordulia uhleri, or Uhler's sundragon, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora minor, the ocellated emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora franklini, the delicate emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora provocans, the treetop emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora whitehousei, or Whitehouse's emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora hudsonica, the hudsonian emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora walshii, the brush-tipped emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora tenebrosa, the clamp-tipped emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora cingulata, the lake emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Neurocordulia xanthosoma, also called the orange shadowdragon, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora semicircularis, the mountain emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora ensigera, the plains emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora williamsoni, or Williamson's emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
Somatochlora forcipata, the forcipate emerald, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.
