CLADOENDESIS OF EPHEMEROPTERA
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Figs 54–56. Pseudopannota pannota sp.n. 54 – subimaginal gonostyli folded under larval cuticle; 55 – genitals of male imago (at left half, muscles shown by interrupted lines; places of attachment of median paraproctal muscles shown by dotted lines); 56 – head of female larva. Abbreviations: gs1, gs2, gs3 – segments of gonostylus; gv – gonovectis; pgs – protogonostylus (paired convexity on posterior margin of IX sternum of male larva); mIX-X, – areas of anterior attachment of median paraproctal muscles (i.e., muscles going from sternum IX to common base of paraprocts); usg – unistyliger.