CLADOENDESIS OF EPHEMEROPTERA
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Figs 34–39. Choroterpes (Dilatognathus) spp. 34–37 – median part of postrior margin of abdominal tergum of ultimolarva: 34–35 – Ch. (D.) bogori; 36–37 – Ch. (D.) cataractae; 34 and 36 – tergum II; 35 and 37 – tergum VII. 38–39 – Ch. (D.) bogori: 38 – exuviae of right half of subimaginal mesonotum; 39 – egg.