CLADOENDESIS OF EPHEMEROPTERA
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INDEX OF CHARACTERS

2.1. SUBIMAGO & IMAGO:
HEAD AND ITS APPENDAGES
Head [2.1], antennae [2.1.1], eyes [2.1.2-3]

[2.1] Head

— with lateral incisions: Oligoneuria/f4=g5 (1)

— with anterior projection curved backward: part of Oligoneuria/f4=g5 (4) {Spaniophlebia (1), Oligoneuria/f5=g6 (1)}

— with face plate projecting anteriorly: part of Heptagennota (1)

— with pair of projections between antennae: Acanthametropus/fg2 (1)

— with unpaired projection on vertex: Nesameletus/f1=Metamonius/g1 (not all) (6)

Antennae of subimago & imago [2.1.1]

[2.1.1] Antennae

— located on projections: Behningia/fg1 (1)

Eyes of subimago & imago [2.1.2-5]

[2.1.2] Eyes

— with vertical bands: Fascioculus (1)

— of male - see [2.1.3-4]

— of female - see [2.1.5]

[2.1.3] Eyes of male

— as small as in female: Prosopistoma/f1=g2 (), part of Turbanoculata (1) {Aturbina (1)}, part of Potamanthus/fg1 (VAR), Caenoptera (not all) (15), Teloganella (4), part of Tricorygnatha (13), Leptohyphes/fg1 (not all) (3), part of Leptophlebia/fg1 (VAR)

— large, but not turban: Baetisca/f2=g1 (P), Siphlaenigma (P), †Palaeocloeon (P), Potamanthus/fg1 (not all) (VAR), Neoephemera/fg1 (P), part of Caenoptera (15) {Caenopsella/g1 (1)}, Ephemerella/fg2 (P), Vietnamella (P), Teloganodes/f1=g3 (7), part of Tricorygnatha (13), Ephemerythus (P), Dicercomyzon (P), Machadorythus (P), part of Leptohyphes/fg1 (3), Leptophlebia/fg1 (not all) (VAR) 

— turban: Turbanoculata (not all) (1), part of Leptophlebia/fg1 (VAR) {??Fittkaulus (), Hagenulopsis (), Isca/fg (), Megaglena (), Miroculis/g3 (1)},

— widely separated: Leucrocuta/f3=g2 (1)

[2.1.4] Upper portion of male eye

— transformed to turban eye: Turbanoculata (not all) (1)

— with square facets: Atalophleboculata (1)

[2.1.5] Eyes of female