CLADOENDESIS OF EPHEMEROPTERA

CLADOENDESIS OF EPHEMEROPTERA
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Fallceon

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna pm.Tridentiseta
Tetramerotarsata Liberevenata Turbanoculata
Anteropatellata Baetovectata Baetungulata - Fallceon)

Nomen hierarchicum: Fallceon/g(1) [g:1987]

In circumscription fits:

— sungen. Fallceon: Kluge 1992: 38

— gen. Fallceon Waltz & McCafferty 1987: 668

References. Kluge 1992: * *

Autapomorphies of Fallceon.

...

Characters of Fallceon of unclear phylogenetic status.

() Hind wing of the "Centroptilum-type": relatively narrow and long, with long hooked costal projection (see Index of characters [2.2.60]). Probably plesiomorphy [see Turbanoculata (10)].

() Larval antennae bases are turned together, frons between them forms a longitudinal keel. The same in some other taxa (see Index of characters [1.1.3]).

() Larval abdominal terga with scales in operculate sockets [see Turbanoculata (12)] (see Index of characters [1.3.4]).

Plesiomorphies of Fallceon.

In mature larva ready to moult to subimago, buds of subimaginal gonostyli are folded under larval cuticle by the "Nigrobaetis-type": 2^nd segment of gonostylus is directed posteriorly and curved by its convexity medially and by apex laterally [see Baetovectata (3)] (see Index of characters [2.3.9]).

Larval paracercus is developed.

Size. Fore wing length 3–5 mm (see Tetramerotarsata).

Distribution. America (dominate in Neotropical Region).

Nominal species in Fallceon/g(1):

ater Hofmann & Thomas (in Hofmann & Sartori & Thomas) 1999 [Fallceon]