CLADOENDESIS OF EPHEMEROPTERA
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Figs 62–66. Male genitalia of Demoulinia crassi. 62 – penis, ventral view (left muscles not shown); 63 – genitalia, ventral view (penis dotted; left gonovectal muscle and right styligeral muscle not shown); 64 – penis (dotted), posterior view (left muscle not shown); 65 – subimaginal gonostyli crumpled under larval cuticle; 66 – exuviae subimaginal of gonostyli (gd – gonoduct; gs1, gs2, gs3 – segments of gonostylus; m.gv – gonovectal-sternal muscle; m.g-t, – gonovectal-tergal muscle; m.pp – paces of attachment of muscles going to paraprocts; m.sg – sterno-styligeral muscle; usg – unistyliger).