The Dicteriadidae are a small family of

damselflies Damselflies are flying insects of the suborder Zygoptera in the order Odonata. They are similar to dragonflies, which constitute the other odonatan suborder, Anisoptera, but are smaller and have slimmer bodies. Most species fold the wings along ...

with only two species in two

monotypic genera In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

. The family is endemic to South America.Fleck, G., Neiss, U. G., & Hamada, N. (2012)
The larva of ''Dicterias'' Selys, 1853 (Odonata: Heliocharitidae (= Dicteriadidae)), and taxonomic and phylogenetic notes on Heliocharitidae.
''Zootaxa'', 3164, 32-40. Species: *'' Dicterias atrosanguinea'' – Red Bareleg: endemic to Brazil *'' Heliocharis amazona'' – widely distributed in South America

References

Calopterygoidea Odonata families {{Calopterygoidea-stub