FIGURES 637–649 in Systematic position of Thraulodes Ulmer 1920 (Ephemeroptera: Leptophlebiidae) and descriptions of new and little-known species

FIGURES 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.