CLADOENDESIS OF EPHEMEROPTERA
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Figs 637–649. Thraulodes sp. «Itaya», larva. 637 – tergalius III; 638–645 – larval exuviae at the same magnification: 638 – part of head with labrum; 639–640 – left and right mandibles; 641 – right half of pronotum and mesonotum; 642–644 – fore, middle and hind legs; 645 – abdominal terga and sterna; 646 – anterior side of hind femur; 647 – anterior side of fore tibia; 648 – hind tibia with focus on outer-posterior row of stout setae; 649 – the same with focus on outer-anterior and inner-anterior rows of stout setae.