FIGURES 208–231. Thraulodes marreroi. 208 in Systematic position of Thraulodes Ulmer 1920 (Ephemeroptera: Leptophlebiidae) and descriptions of new and little-known species

FIGURES 208–231. Thraulodes marreroi. 208, margin of labrum with focus on posterior transverse setal row; 209, the same with focus on anterior transverse setal row (represented by field of irregularly situated setae) (arrows show four sensilla separating three denticles). 210–215 and 216–219, larval exuviae of two different specimens at the same magnification; 220–226, tergalii I–VII; 227, immature larva (with ocher and whitish cuticular coloration and blackish paired hypodermal markings on abdomen); 228, anterior side of hind femur; 229, anterior side of fore tibia; 230, hind tibia with focus on outer-posterior row of stout setae; 231, the same with focus on outer-anterior and inner-anterior rows of stout setae.