CLADOENDESIS OF EPHEMEROPTERA
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Figure 31. Nesameletus/f1=Metamonius/g1, maxillae and mandibles.

A–D – Nesameletus/f2=Metamonius/g2: A–B – flavitinctus [Ameletus]: A – apex of left maxilla, dorsal view, canines and distal dentiseta pressed together (distal dentiseta shown by dots); B – the same, canines and distal dentiseta not pressed together (distal dentiseta shown by dots); C–D – anceps [Metamonius]: C – left maxilla, dorsal view (muscles shown by interrupted lines); D – right mandible, dorsal view. E–F – Siphluriscus/fg* chinensis [Siphluriscus]: E – apex of maxilla (some bristles are not drawn; dentisetae shown by dots); F – kinetodontium and prostheca of right mandible, dorsal view. (A, B – from Kluge & al., 1995).

Abbreviations: c1, c2, c3 – maxillary canines; ds1, ds2, ds3 – first, second and third dentisetae; i – incisor; kd – kinetodontium; m – mola; prs – prostheca.