Erpetogomphus

Erpetogomphus is a genus of dragonfly in the family Gomphidae. They are commonly known as ringtails. Most of the species are predominantly green coloured and the males have a moderately clubbed tail. A fossil species are known from the Miocene Mexican amber

The genus contains the following species:
 * Erpetogomphus agkistrodon Garrison, 1994
 * Erpetogomphus boa Selys, 1859
 * Erpetogomphus bothrops Garrison, 1994 – one-striped ringtail
 * Erpetogomphus compositus Hagen in Selys, 1858 – white-belted ringtail
 * Erpetogomphus constrictor Ris, 1918 – knob-tipped ringtail
 * Erpetogomphus cophias Selys, 1858
 * Erpetogomphus crotalinus (Hagen in Selys, 1854) – yellow-legged ringtail
 * Erpetogomphus designatus Hagen in Selys, 1858 – eastern ringtail
 * Erpetogomphus elaphe Garrison, 1994
 * Erpetogomphus elaps Selys, 1858 – straight-tipped ringtail
 * Erpetogomphus erici Novelo & Garrison, 1999
 * Erpetogomphus eutainia Calvert, 1905 – blue-faced ringtail
 * Erpetogomphus heterodon Garrison, 1994 – dashed ringtail
 * Erpetogomphus lampropeltis Kennedy, 1918 – serpent ringtail
 * Erpetogomphus leptophis Garrison, 1994 – dark-shouldered ringtail
 * Erpetogomphus liopeltis Garrison, 1994
 * Erpetogomphus ophibolus Calvert, 1905
 * Erpetogomphus sabaleticus Williamson, 1918
 * Erpetogomphus schausi Calvert, 1919
 * Erpetogomphus sipedon Calvert, 1905
 * Erpetogomphus tristani Calvert, 1912
 * Erpetogomphus viperinus Selys, 1868