Figures: 20, 103, 166, 237
In addition to the Ecdyonurinae characteristics, the following combination of characteristics will identify the genus:
The combination of having a slightly thickened anterior margin of the head capsule (as in Fig. 30), two rows of long setae on the mid- and hindtibiae (as in Figs. 76, 78), and whorls of fine setae on the articulations of the caudal filaments (Fig. 103) will distinguish Parafronurus from all other Ecdyonurinae genera. Larvae of Parafronurus are similar to those of Afronurus but, in addition to the above combination of characters, the eggs from mature female larvae of Parafronurus have scattered knob terminated coiled threads with scattered granules, whereas those of Afronurus have large, equatorial knob terminated coiled threads.
Parafronurus males may be distinguished from those of other Ecdyonurinae genera by the combination of having penes (Fig. 166) that lack both ventral and dorsolateral spines, have well-developed titallators that are located medially, the presence of both apical and lateral sclerites, and hindtarsi that are 0.5X the length of the hindtibiae.
China (Fig. 237).