CLADOENDESIS OF EPHEMEROPTERA
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Figure 19. Siphlonurus/fg1-Parameletus/fg1.

A – Parameletus/fg2 minor [Potameis]: copulatory pouch of female imago, dorsal view (in left half) and ventral view (in right half). B–F – Parameletus/fg* chelifer [Parameletus]: B – copulatory pouch of female imago, dorsal view (in left half) and ventral view (in right half); C – hind wing; D – labium; E – imaginal mesonotum; F – larva cleaning its abdomen and tergalii. G–H – Siphlonisca/g* aerodromia [Siphlonisca]: G – copulatory pouch of female imago, dorsal view; H – subimaginal exuviae of right half of mesonotum. (A, B, E, G, H – from Kluge & al. 1995; D – from Kluge 1997d; F – by Novikova, from Kluge & Novikova & Brodsky 1984)

Abbreviations: cp - copulatory pouch; rs - receptaculum seminis; sVIII – anterior margin of abdominal sternite VIII.