CLADOENDESIS OF EPHEMEROPTERA
Figs 65–67. Procloeon (Oculogaster) album. 65 – genitals of male imago (at left half gonovectal muscles shown by interrupted lines, hidden part of penis shown by interrupted line and dotted, gonostylar muscle not shown; at right half gonostylar muscle shown by interrupted lines, gonovectal muscles not shown; median styligeral muscle shown by interrupted lines, areas of anterior attachment of median paraproctal muscles shown by dotted lines). 66 – genitals of male subimago; 67 – wing. Abbreviations: 1, 2, 3 – segments of gonostylus; mIX-X – areas of anterior attachment of median paraproctal muscles (i.e., muscles going from sternum IX to common base of paraprocts); usg – unistyliger.