CLADOENDESIS OF EPHEMEROPTERA
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Figs 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: 210 and 216–217 – details of head; 211–213 – fore, middle and hind legs; 214 and 218 – right halves of pronotum and mesonotum; 215 and 219 – abdominal terga and sterna; 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.