CLADOENDESIS OF EPHEMEROPTERA
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Figs 31–37. Thraulobaetodes cumminsorum. 31 – fore and hind wing; 32 – hind wing, enlarged; 33 – apex of fore wing of another individual; 34 – head of female imago; 35 – outline of abdominal segment IX of mature male larva with developing subimaginal genitals inside (in left half muscles shown by interrupted lines); 36 – exuviae of left gonostylus of male subimago; 37 – genitals of male imago, the same individual (muscles shown by interrupted lines; in left half gonostylar muscle not shown, internal sclerotized part of penis shown by interrupted line and dotted; in right half cuticular pigmentation shown by dots). Abbreviations: gs1, gs2, gs3 – segments of gonostylus; m.gs – gonostylar muscle; m.gv1, m.gv2 – muscles of gonovectis; m.s – sterno-styligeral muscle; us – unistyliger.