''Helocordulia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of dragonfly in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

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 ...

. They are commonly known as sundragons. These are medium-sized odonates, long, dark brown with orange markings. They are confined to eastern USA and Canada where their

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

is clear streams and lakes with sandy bottoms. The genus contains only two species: *'' Helocordulia selysii'' – Selys's sundragon *'' Helocordulia uhleri'' – Uhler's sundragon

References

Corduliidae Anisoptera genera Taxa named by James George Needham {{Corduliidae-stub