CLADOENDESIS OF EPHEMEROPTERA |
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Litobrancha
(Panephemeroptera
Euephemeroptera
Euplectoptera
Anteritorna
Bidentiseta
Furcatergaliae
Fimbriatotergaliae
Fossoriae
Ephemera/fg9
Hexagenia/fg1
Eatonica/g1
-
Litobrancha)
Nomen hierarchicum:
Litobrancha/g(1)
[g:1971]
In circumscription fits:
— gen. Litobrancha McCafferty 1971a: 45
— Litobrancha/g(1): Kluge 2004: 242
References. Burks 1953 (Hexagenia
recurvata):
; – McCafferty 1971a:
; – 1975:
; –
Edmunds & Jensen & Berner 1976:
; – Kluge 2004:
Autapomorphy of Litobrancha. (1) Vestige of tergalius I [see Ephemera/fg9 (4)] is unilamellate. Non-unique apomorphy (see Index of characters [1.3.33]). Plesiomorphies of Litobrancha. Larval claw of fore leg is normally developed (unlike Eatonigenia). Imaginal and subimaginal gonostylus with 2 distal segments (unlike Eatonica/g2 and Eatonigenia). Penis has no shape peculiar for Eatonigenia. |
Size. Fore wing length 15–24 mm.
Distribution. Eastern Nearctic.
Nominal species in Litobrancha/g(1): 1 species
recurvata Morgan
1913 [Hexagenia]
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