CLADOENDESIS OF EPHEMEROPTERA |
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Fascioculus
(Panephemeroptera
Euephemeroptera
Euplectoptera
Posteritorna
Baetisca/f2=g1
Baetisca/f3=g2
- Fascioculus)
Nomen hierarchicum: Fascioculus/g(1) [g:1981]
In circumscription fits:
— subgen. Fascioculus: Pescador & Berner 1981: 168
— Fascioculus/g(1): Kluge 2004: 69
References. Pescador & Berner 1981: ; – Kluge 2004: .
Autapomorphy of Fascioculus. (1) Larval, subimaginal and imaginal eyes with vertical alternate light and dark bands (Pescador & Berner 1981: Fig.12b). Character of Fascioculus of unclear phylogenetic status. (2) Larval notal shield [see Baetisca/f3=g2 (4)] is compressed dorsoventrally (unlike Baetisca/f4=g3). Plesiomorphy of Fascioculus. Unlike Baetisca/f4=g3, larval head has no frontal projections between antennae bases; there are only genal projections latero-ventrad of antennae bases, which are more or less developed in all Baetisca/f3=g2 (Pescador & Berner 1981: Fig.12b). |
Size. Fore wing length 8–12 mm.
Distribution. Florida (USA).
Nominal species in Fascioculus/g(1): 1 species
escambiensis Berner 1955 [Baetisca] — typus nominis Fascioculus
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