Previously they have been divided in two subfamilies Epermeniinae and Ochromolopinae (e.g. Common, 1990: 321) but this is no longer maintained since the last group is probably hierarchically nested within the first (Dugdale et al., 1999).
Previously, they were divided into two subfamilies: Epermeniinae and Ochromolopinae (e.g., Common, 1990: 321). However, this classification is no longer considered valid because the latter group is likely nested within the former (Dugdale et al., 1999).