CLADOENDESIS OF EPHEMEROPTERA

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Chiloporter

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna pm.Tridentiseta
 Ameletopsis/fg1 - Chiloporter)

Nomen hierarchicum: Chiloporter/fg(1) [f:1973; g:1931]

In circumscription fits:

— gen. Chiloporter Lestage 1931c: 50

— fam. Chiloporteridae Landa 1973: 156

— Chiloporter/fg(1): Kluge 2004: 118


References. Eaton 1883-1888 ("nameless", Pl.53): ; – Lestage 1935a: ; – Demoulin 1955c: ; – Edmunds 1975: ; – Kluge 2004: .


Autapomorphies of Chiloporter.

(1) Labrum [widened – see Ameletopsis/fg1 (1)] with large median incision (Kluge 2004: Fig.35:B); glossae are thickened and truncate in such a manner, that their apices are inserted into the incision of labrum (Kluge 2004: Fig.35:A).

(2) Larva is rheophilous: body is somewhat flattened dorsoventrally; head is prognathous; femora are somewhat widened; claws are strongly curved, with proximal denticle on inner margin (Kluge 2004: Fig.35:A).

(3) Larval abdominal posterolateral spines are diminished, on segment IX completely lost.

Characters of Chiloporter of unclear phylogenetic status.

(4) Each tergalius I–VII has fibrillose lobe – additional ventral lamella with long marginal processes [see Ameletopsis/fg1 (4)]; main lobe is enlarged, round, without anal rib (Demoulin 1955c: Fig.2f-i).

(5) Larval cerci with secondary swimming setae (Demoulin 1955c: Fig.2k) [unlike Mirawara – see Ameletopsis/fg1 (5)].

Plesiomorphies of Chiloporter. Gonostylus with 2 distal segments (unlike Mirawara). Imaginal and subimaginal paracercus is subequal to cerci (unlike other Ameletopsis/fg1).

Size. Fore wing length 18–19 mm.

Distribution. Chile.


Nominal species in Chiloporter/fg(1):

eatoni Lestage 1931 [Chiloporter] ,/,,/

 penai Demoulin 1955 [Chiloporter] — syn.subj. eatoni [Chiloporter]


See also: 

Chiloporter spp.

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