Figure: 149, 226

In addition to the Ecdyonurinae characteristics, the following combination of characteristics will identify the genus:

Larval Diagnosis

There are no unique characteristics for Electrogena larvae. They can be identified, however, by the combination of having simple setae on the ventral surface of the maxillae (as in Fig. 49), only one row of long, fine setae on the mid- and hindtibiae, rounded supracoxal sclerites (as in Fig. 80), an unthickened anterior margin of the head capsule (as in Fig. 34), no dorsal ridge on the abdomen, tarsal claws with at least one denticle, well-developed lamellae on all gills, gills 1 with a concave anal margin (as in Fig. 88), and rounded posterolateral projections on the superlinguae. Larvae of Thamnodontus are similar, but the two genera are not sympatric.

Adult Diagnosis

The teardrop shaped penes with partially fused apical and lateral sclerites (Fig. 149) will distinguish Electrogena from all other Ecdyonurinae genera.


Western and southern Palearctic (Fig. 226).