CLADOENDESIS OF EPHEMEROPTERA

CLADOENDESIS OF EPHEMEROPTERA
			zzz	A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Bleptus

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna Bidentiseta Branchitergaliae
Heptagennota Pentamerotarsata Radulapalpata Rhithrogena/fg1
Epeorus/fg1 - Bleptus)

Nomen hierarchicum: Bleptus/g(1) [g:1885]

In circumscription fits:

— gen. Bleptus Eaton 1885: 243

— Bleptus/g(1): Kluge 2004: 201

References. Eaton 1883–1888: ; – Ueno 1931: ; – Tshernova 1974: ; – 1976: ; – Yoon & Bae 1984: (L) ; – Kluge 1988: ; – 1993: ; – 2004:

Autapomorphies of Bleptus.

(1) Glossae [initially pyramidal – see Radulapalpata (1)] are roundish, wide (Kluge 2004: Fig.64:F) (unlike other Rhithrogena/fg1).

(2) Hind wing is diminished, with only 2 longitudinal veins behind triad MP (Eaton 1883–1888: Pl.65:1). Non-unique apomorphy (see Index of characters [2.2.59]).

(3) Titillators [see Pentamerotarsata (5)] are lost. Non-unique apomorphy; among Epeorus/fg1 the same in Ironodes and some Epeorus/fg3 (see Index of characters [2.3.15]).

Characters of Bleptus of unclear phylogenetic status.

(4) Superlinguae diverge toward apex (Kluge 2004: Fig.64:G). Similar form of superlinguae is present in Ironodes [for comment see Ironodes (3) below].

Plesiomorphies of Bleptus. Unlike Epeorus/fg2, larval head is widest in its posterior part, without dense hairs on fore margin (Ueno 1931: Pl.12: 1). Maxilla is long [see Radulapalpata (3)], apical margin bears long hairs and vestiges of pectinate setae [see Epeorus/fg1 (5)], canines are not thickened (Kluge 2004: Fig.64:E) (symplesiomorphy with Ironodes, unlike Epeorus/fg3).

Size. Fore wing length 10–18 mm.

Distribution. Japan and Korea.

Nominal species in Bleptus/g(1):

fasciatus Eaton 1885 [Bleptus] --/