CLADOENDESIS OF EPHEMEROPTERA
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Figs 510–521. Thraulodes nigrotibialis. 510 and 511–517 – larval exuviae of two specimens at the same magnification: 510 and 511–512 – parts of head with labrum and mandibles; 513 – abdominal terga and sterna; 514–516 – fore, middle and hind legs; 517 – left half of pronotum and mesonotum; 518 – young larva with brown cuticle and blackish hypodermal markings on head, thorax and abdomen; 519 – anterior side of hind femur; 520 – hind tibia with focus on outer-posterior row of stout setae; 521 – the same with focus on outer-anterior and inner-anterior rows of stout setae (511–517– holotype).