CLADOENDESIS OF EPHEMEROPTERA

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Autapomorphies of Baetodes/g2.

(1) Patella-tibial suture [equally developed on all legs – see Anteropatellata (1)] goes by anterior (dorsal) side of tibia exactly along tibia and has a form of light line on dark background; distally from the middle of tibia this suture has its usual oblique direction (Kluge & Novikova 2014: Fig.67–68). In Baetodes/g3 it undergoes further modification [see below, Baetodes/g3 ()].

Non-unique autapomorphies of Baetodes/g2.

() Larva is adapted to inhabit in rapid waters, with this are connected some unique apomorphies [see ()–()], as well as non-unique ones: body Acentrella-like, i.e. with flattened ventral and convex dorsal side, thorax relatively large in comparison with abdomen (non-unique character – see Index of characters [1a]); paracercus is vestigial, consists of several segments (non-unique character – see Index of characters [1.3.64]); cerci are long, swimming setae are short or lost.

() Larval abdominal terga lack wide scales [see Turbanoculata (12)] (see Index of characters [1.3.4]).

(?) Tergalial ribs [initially situated on anterior and posterior margins – see Tetramerotarsata (12)] are lost.

Characters of Baetodes/g2 of unclear phylogenetic status. 

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Plesiomorphies of Baetodes/g2.

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