CLADOENDESIS OF EPHEMEROPTERA
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Figs 21–25. Demoulinia spp. 21–23 – D. crassi; 24–25 – D. insularis (holotype); 21, 22, 24 – maxilla (21 – with focus on ventral side; 22 – with focus on dorsal side; d1, d2, d3 – dentisetae; p1, p2, p3 – segments of maxillary palp); 23, 25 – hypopharynx and superlinguae.