Figures: 1, 30, 66, 76, 80, 100, 135-137, 214
In addition to the Ecdyonurinae characteristics, the following combination of characteristics will identify the genus:
The combination of a slightly thickened anterior margin of the head capsule (Fig. 30), simple scattered setae on the ventral surface of the maxillae (as in Fig. 49), the absence of whorls of long, fine setae on the caudal filaments (Fig. 100), the absence of a dorsal ridge on the abdominal terga, and the presence of two rows of long, fine setae on the mid- and hindtibiae (Fig. 76) should differentiate larvae of Afronurus from other Ecdyonruinae genera. Additionally, mature female larvae can be identified by the presence of large, equatorial knob terminated coiled threads on the eggs. Larvae are most similar to those of Parafronurus and Darthus but lack whorls of fine setae on the caudal filaments and a dorsal abdominal ridge. At least one species of Afronurus has long posterolateral abdominal spines, similar to those of Thalerosphyrus, but otherwise the two should be readily differentiated by the other characteristics listed above.
Adult male Afronurus differ from all other known Ecdyonurinae males by having either no titillators or titillators that are widely separated (Figs. 135-137).
Afrotroptical; Oriental; eastern Palearctic (Fig. 214).