CLADOENDESIS OF EPHEMEROPTERA
PAGE UNDER CONSTRUCTION
Tetramerotarsata Liberevenata Turbanoculata
Anteropatellata Baetovectata Baetungulata - Offadens)
Nomen hierarchicum: Offadens/g [g:1998]
In circumscription fits:
Autapomorphies of Offadens/g1.
Characters of Offadens/g1 of unclear phylogenetic status.
??() Larval antennae bases are not turned together, frons between them does not form a keel (unlike Nigrobaetis/g1, Fallceon et al. – see Index of characters [1.1.3]).
??() Hind wing [see Turbanoculata (10)] of the "Nigrobaetis-type": not narrowed, with non-curved pointed costal projection, with three longitudinal veins among which the second is bifurcate (i.e. MA arises from RA). The same in Nigrobaetis/fg1 and some others (see Index of characters [2.2.60]).
Plesiomorphies of Offadens/g1.
In mature larva ready to moult to subimago, buds of subimaginal gonostyli are folded under larval cuticle by the "Nigrobaetis-type": 2nd segment of gonostylus is directed posteriorly and diped into 1st segment [see Baetovectata (3)] (unlike Baetofemorata and Labiobaetis/f1 – see Index of characters [2.3.9]).
Larval paracercus is developed.
Size. Fore wing length ?–? mm (see Tetramerotarsata).
Nominal species in Offadens/g1:
soror Ulmer 1908 [Baetis] --/
Baetovectata INCERTAE SEDIS
Turbanoculata INCERTAE SEDIS