Mesagrionidae

Mesagrion leucorrhinum is a species of damselfly endemic to the Andes of central Colombia. It is the sole species in the genus Mesagrion, which in turn is the only genus in the family Mesagrionidae, which is a family in the superfamily Polythoroidea.

Mesagrion leucorrhinum inhabits small waterfalls and forest streams in subtropical and tropical montane forests. Adults are medium-sized damselflies with clear wings, a black body marked with yellow, and a largely red abdomen. The species is assessed as being of least concern on the IUCN Red List.