CLADOENDESIS OF EPHEMEROPTERA
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Figs 86–93. Thraulodes telegraphicus. 86 – median longitudinal section of labrum in usual condition; 87 – the same, in spread condition; 88 – labrum in spread condition in dorsal view (setal rows shown as dotted lines); 89 – transverse section of hind tibia; 90–93 – tergalii I, III, VI and VII. Abbreviations: anter.r – anterior transverse row of setae; dent – five denticles separated by six sensilla; poster.r – posterior transverse row of setae; i.f – inner field of stout pointed setae; i-a.h – inner-anterior recurved hairs; i-a.r – inner-anterior row of stout setae; o-a.r – outer-anterior row of stout setae; o.h – outer hairs; o-p.r – outer-posterior row of stout setae; p.r – row of posterior pointed pectinate setae.