CLADOENDESIS OF EPHEMEROPTERA
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Figure 86. Caenoptera.

A – Brachycercus/f1=g3 minutus [Brachycercus], prothorax and head of male imago, ventral view; B–G – Caenis/f4=g2: B – Caenis/f6=g4 horaria [Ephemera], the same; C–E – Tillyardocaenis/g* tillyardi [Caenis]: C – abdominal sternum IX of mature male larva, ventral view (internal structures shown by interrupted lines: subimaginal cuticle without dots, imaginal parts with dots; penis not shown); D – right gonostylus of male imago, ventral view; E – the same, median view. F–G – Caenis/fg* macrura [Caenis]: F – fore wing; G – tibia and tarsus of imaginal right hind leg, anterior view. (A, B – from Tshernova & Kluge & Sinitshenkova & Belov 1986).