CLADOENDESIS OF EPHEMEROPTERA
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Figs 450–463. Larvae, presumably attributed to Thraulodes nigrabdominalis. 450–455 – parts of last instar larva at the same magnification: 450 – fragment of head with labrum and mandibles; 451 – pronotum and mesonotum; 452 – hind leg; 453 – abdominal terga; 454–455 – tergalii IV–V; 456–458 – exuviae of young larva at the same magnification: 456–457 – fore and hind legs; 458 – abdominal terga and sterna; 459 – young larva with brown cuticular coloration and blackish hypodermal coloration; 460 – larval protogonostyli and protopenis; 461 – anterior side of hind femur; 462 – hind tibia with focus on outer-posterior row of stout setae; 463 – the same with focus on outer-anterior and inner-anterior rows of stout setae.