Redescriptions of Bittacus montanus Weele, 1909, and Bittacus schoutedeni Esben-Petersen, 1913, with new synonymy and the description of a new central African species (Mecoptera: Bittacidae). Journal of the Entomological Society of Southern Africa, 40(1) 1977: 87-98,illust.. 94 [Zoological Record Volume 114]