Plagiognathidea grisescens Poppius, 1914f: 100. LT (Linnavuori, 1975b: 98, as type; 1993b: 231, as HT): male, Tanzania, Langenburg; MZHF.
Plagiognathidea grisescens atricapillus Linnavuori, 1975b: 98 (syn. Linnavuori, 1993b: 231). HT: male, Sudan, Kordofan, El Obeid; AMNH.