The insect family Corduliidae contains the emerald dragonflies or green-eyed skimmers. 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. Some genera: \n* Archaeophya – urflys \n* Cordulia – American emeralds \n* Dorocordulia – little emeralds \n* Epitheca – baskettails \n* Helocordulia – sundragons \n* Idionyx \n* Macromidia \n* Neurocordulia – shadowdragons \n* Somatochlora – striped emeralds \n* Williamsonia – boghaunters