CLADOENDESIS OF EPHEMEROPTERA
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CLADOENDESIS OF EPHEMEROPTERA |
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Baetisca/f4=g3
(Panephemeroptera
Euephemeroptera
Euplectoptera
Posteritorna
Baetisca/f2=g1
Baetisca/f3=g2
- Baetisca/f4=g3)
Nomen hierarchicum:
Baetisca/f4=g3
[f:1900; g:1862] (sine Fascioculus).
In circumscription fits:
— subgen. Baetisca s.str.: Pescador & Berner 1981: 169
— Baetisca/f4=g3: Kluge 2004: 69
References. Pescador & Berner 1981:
* 
*;
– Kluge 2004:
* 
*
*.
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Autapomorphy of Baetisca/f4=g3. (1) Mature larva has a pair of frontal projections between antennae bases ventrad of lateral ocelli (Pescador & Peters 1974: Fig.15:I-J); in different species these projections have form from small protuberances to large denticles (Pescador & Berner 1981: Fig.10-12a,13-14), but are absent in young larvae (Pescador & Peters 1974: Fig.10-11). Character of Baetisca/f4=g3 of unclear phylogenetic status. (2) Larval notal shield [see Baetisca/f3=g2 (4)] is strongly convex (unlike Fascioculus). Plesiomorphy of Baetisca/f4=g3. Unlike Fascioculus, eyes are uniformly coloured. |
Size. Fore wing length 6–16 mm.
Distribution. Nearctic (dominate in Eastern Nearctic).
Nominal species in Baetisca/f4=g3:
bajkovi Neave 1934 [Baetisca]
— syn.subj. lacustris
[Baetisca]
becki
Schneider & Berner 1963 [Baetisca]
berneri Tarter & Kirchner 1978 [Baetisca]
callosa
Traver 1931 [Baetisca]
carolina Traver 1931 [Baetisca]
columbiana Edmunds 1960
[Baetisca]
gibbera Berner 1955 [Baetisca]
lacustris
McDunnough 1932 [Baetisca]
laurentina McDunnough 1932 [Baetisca]
obesa Say 1839 [Baetis]
— typus nominis Baetisca
rogersi Berner 1940 [Baetisca]
--
rubescens Provancher 1878 [Cloe]
thomsenae Traver 1937 [Baetisca]
— syn.subj.
carolina [Baetisca]
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