CLADOENDESIS OF EPHEMEROPTERA
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Fig. 422–428. Centroptella (Crassolus?) sp. «Nepal», larva. 422–423 – left and right mandibles with developing mandibles of next instar inside (arrow shows tuft of setiform processes on proximal angle of mola); 424–425 – maxilla; 426 – abdominal tergum X; 427 – abdominal tergum IX; 428 – labrum.