The common name is also used to refer to the closely related Nysius aa, which occupies the same niche on Mauna Loa. It is even more poorly known than N. wekiuicola, but appears to be in less danger since the summit of Mauna Loa is not under threat of development. Although it receives a large number of hikers, the area is largely made up of rocky lava rather than loose cinder, and is less vulnerable to human influence.