Prionopetalum frundsbergi Attems, 1927
Prionopetalum serratum frundsbergi Attems, 1927: 85 .
Prionopetalum frundsbergi – Kraus 1960: 87.
Previous Eastern Arc records: Tanga Region, Muheza Distr., Mgambo Proposed FR, 350 m a.s.l., Sep. 1996, N. Cordeiro leg. (Enghoff et al. 2016).
General distribution: known from several places in NE Tanzania and SE Kenya (Enghoff et al. 2016).