CLADOENDESIS OF EPHEMEROPTERA
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Figs 569–577. Thraulodes alboniger. 569 – female subimago extracted from larva; 570 – apex of fore wing; 571–573 – abdominal terga of three different male imagines; 574–575 – two male imagines in lateral view; 576 – head and thorax of male imago in dorsal view; 577 – right half of subimaginal exuviae of mesonotum (570, 572, 577 – holotype).