CLADOENDESIS OF EPHEMEROPTERA

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Autapomorphies of Coloburiscus/fg2.

(1) In imago and subimago posterior end of lateroparapsidal suture is strongly curved laterally; in subimago lateral pigmented area of mesonotum occupies most part of sublateroscutum and is bordered from behind by the curvation of lateroparapsidal suture (Kluge 2004: Fig.39:C-D).

(2) Swimming setae of larval caudalii are lost. Paracercus is shortened, less than a half of cerci length (in Coloburiscus/fg3) or vestigial (in Murphyella). Non-unique apomorphies (see Index of characters [1.3.64] and [1.3.66]).

Plesiomorphies of Coloburiscus/fg2. Unlike Coloburiscoides, on hind wing fork of MP is more proximal than fork of MA.