CLADOENDESIS OF EPHEMEROPTERA
Figure 51. Oligoneuria/f4=g5.
A–B – Spaniophlebia/g1 sp.O3 (in T.Soldan's collection), fore and hind wings (all veins conventionally shown by black, lying in one plain and spaced). C – Lachlania/g1 powelli [Lachlania], head of mature male larva, dorsal view. D – Oligoneuria/f5=g6 sp.O4 (in T.Soldan's collection), head of young larva, dorsal view.