CLADOENDESIS OF EPHEMEROPTERA
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† Plesiomorphon Sharephemera/fg1

(Panephemeroptera Euephemeroptera Euplectoptera Posteritorna - Sharephemera/fg1)

Nomen hierarchicum: Sharephemera/fg1 [fg:202].

In circumscription fits:

— fam. Sharephemeridae Sinitshenkova 2002: 275

— gen. Sharephemera Sinitshenkova 2002: 275

Nominal taxa included:  

Tunephemera/g [g:2013]

Jurassephemera/g [2022]

References. Sinitshenkova 2002: .

Plesiomorphy of Sharephemera/fg1. On fore wing, vein CuA [terminated on tornoapical margin – see Posteritorna (1)] retains the triad consisted of CuA1, iCuA and CuA2 (in contrast to Baetisca and Prosopistoma, whose CuA is non-branched).

Size. Fore wing length 8–15 mm.

Distribution.  

Nominal species in Sharephemera/fg1: 

cubitalis Sinitshenkova 2002 [Sharephemera] — typus nominis Sharephemera

tungussica Sinitshenkova 2013 [Tunephemera] — typus nominis Tunephemera

zhangi Zhang & Zheng & Jarzembowski & Wang & Li & Engel 2022 [Jurassephemera] — typus nominis Jurassephemera