CLADOENDESIS OF EPHEMEROPTERA
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Figure 30. Nesameletus/f2=Metamonius/g2.

A–E – flavitinctus [Ameletus]: A–B – pterothorax of female imago: A – ventral view; B – lateral view; C – head of female imago; D – subimaginal exuviae of right half of mesonotum; E – tergalius. F – anceps [Metamonius], labium, ventral view (muscles shown by interrupted lines). (A–D – from Kluge & al., 1995).

Abbreviations: AES – anepisternum; a.r1 – anterior branch of anal rib; a.r2 – posterior branch of anal rib; c.r – costal rib; FSp – furcasternal protuberance; KES – katepisternum; MNs – mesonotal suture; PCxsA – anterior paracoxal suture; SLS – sublateroscutum.