Dorylus (Alaopone) diadema Gerstäcker

Type locality Mozambique (Gerstäcker, 1859: 261, male); subspecies arnoldi (Forel, 1914d: 216, male; Arnold, 1948: 217, illustrated, workers) from Zimbabwe; and fusciceps (Emery, 1899e: 463, male) from Malawi, workers and male known (see Bolton, 1995) .

Gerstaecker's (1859) description is -
"Dorylus diadema, n.sp.; pedunculo abdominis quadrato, mandibulis triangularibus, dilatatis, pallide ferrugineus, capite pedibus rufis, fascia verticali nigra: thorace supra nitido, subtiler sericeo, abdomine opaco, albido-pruinoso. Long. lin. 9½-10. Mas."

Emery (1895j) provided illustrated notes on the diadema s.s. male; this is at ; Forel (1899b: 309) gave further comments on the diadema s.s. male; these are at ; Forel's (1914d) description of the arnoldi male is at . Arnold's (1948) description of the presumed workers of arnoldi is at ; probably media and minors only. Emery's (1899e) brief description of fusciceps is at - this mentions a specimen from Congo (collector v. Volxem) that seemed likely to be of this species.