Sympetrum dilatatum
Sympetrum dilatatum, the St. Helena darter, was a species of dragonfly in the family Libellulidae. It was endemic to Saint Helena. In 2021, it was declared extinct by the IUCN. There have been no recorded sightings since 1962 and it is no longer present at the only two locations it was previously found at. References

Libellulidae
Insects described in 1892
Taxonomy articles created by Polbot