CLADOENDESIS OF EPHEMEROPTERA
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Figures 144–148. Centroptella (Crassolus) ingridae (specimens from Thailand). 144–145 – left and right mandibles; 146 – genitals of male imago; 147 – their subimaginal exuviae; 148 – subimaginal gonostyli crumpled under larval cuticle (146–147 – holotype).