CLADOENDESIS OF EPHEMEROPTERA
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Figure 46. Discoglossata-Geminovenata-Oligoneuriella/g2

A–B – Oligoneuriella/g2 pallida [Oligoneuria]: A – right half of imaginal mesonotum; B – longitudinal median section of male imaginal abdominal segments IX and X with genitals, telescopic lobe protracted. C–D – Oligoneuriella/g2 tskhomelidzei [Oligoneuriella]:C – pterothorax, lateral view; D – the same, ventral view (nerve ganglions shown by interrupted lines).

Abbreviations: a – primary point of joining of posterior arm of prealar bridge with scutum, PAB – secondary dorso-posterior arm of prealar bridge; AES – anepisternum; FSp – furcasternal protuberance; gsty – gonostylus; KES – katepisternum; p:l – lateral longitudinal sclerotized lobe of penis; p:m – median telescopic lobe of penis; p:pr – proximal part of penis; PCxsA – anterior paracoxal suture.