CLADOENDESIS OF EPHEMEROPTERA
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Fig. 345–351. Centroptella (Crassolus) ludmilae sp. n. 345–346 – left and right mandibles of penultimolarva before molt to ultimolarva (with mandibles of next instar inside); 347–348 – labium; 349 – labrum; 350 – maxilla; 351 – apex of maxilla. Abbreviations: ds1–ds3 – dentisetae.