On confusion about the identity of Pseudagrion acaciae Foerster, 1906, with the description of P. niloticum spec. nov., and on the identity of P. hamoni Fraser, 1955 (Zygoptera: Coenagrionidae)

P. niloticum sp. n. (d holotype: Giohar, Somalia) is described and figured. It occurs in the Nile valley and in the Horn of Africa. P. acaciae has been confused with this sp. by Ris (partim), Andres and Carfi. Nielsen and Fraser confused acaciae with a widespread sp., now widely known as P. whellani Pinhey. However, this is by 1 yr a junior synonym of P. hamoni Fraser, 1955, as shown by a re-examination of the holotype. The latter occurs throughout the Ethiopian region, and has been found once in Libya, within limits of the Palearctic area. The distribution of P. acaciae is redefined as South and South- East Africa.