CLADOENDESIS OF EPHEMEROPTERA
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Fig. 273–280. Centroptella (Crassolus) saxophila, larval exuviae. 273 – abdomen; 274 – pronotum and mesonotum; 275 – head; 276 – abdominal tergum V; 277 – abdominal tergum V of another specimen; 278 – abdominal tergum X; 279 – paraprocts; 280 – apex of abdomen of female.