(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna pm.Tridentiseta  
Tetramerotarsata Liberevenata Turbanoculata 
 pm.Protopatellata Rhithrocloeon/fg1 - Rhithrocloeon/fg2)

Nomen hierarchicum: Rhithrocloeon/fg2 [f:2012; g:1985] (sine Thraulobaetodes; incl. Mutelocloeon, Bugilliesia)

In circumscription fits:

Bugilliesia complex: Gillies 2001:32; Gattolliat 2003; 2006 (non Lugo-Ortiz & McCafferty 1996)

— Rhithrocloeon/fg1: Kluge 2012

— Rhithrocloeoninae Kluge 2012

— Rhithrocloeonini Kluge 2012

— Rhithrocloeon/fg2: Kluge 2015

References. Kluge 2012:1-13 (as Rhithrocloeon/fg1): * *; – Kluge 2015: * * *

Autapomorphies of Rhithrocloeon/fg2.

(1) Gonostylus [modified – see Rhithrocloeon/fg1 (1)] lacks distal segment (Kluge 2012: Fig.12-18, 20, 31, 40-42,45; Kluge 2015: Fig.61-62). Unlike all other Liberevenata.

Characters of Rhithrocloeon/fg2 of unclear phylogenetic status.

(2) Maxilla of «Cloeon-type», i.e. its three canines and distal dentiseta are pointed and bent to the same direction (Kluge 2012: Fig.27).

(3) Larval legs of «Cloeon-type», i.e. slender, with femora parallel-sided (Kluge 2012: Fig.5); claws slender, slightly arched, denticles on inner side small or absent (in Mutelocloeon); if present, form either both rows (in Bugilliesia and Adnoptilum), or one row [see below, Rhithrocloeon/fg2 (2)].

(4) Tergalii of all seven pairs are simple and oval, with costal and anal ribs developed. At the same time, tergalii are able for rhythmic respiratory movements [see Rhithrocloeon/fg1 (1)], in contrast to most other Turbanoculata with such form of tergalii.

Size. Fore wing length 3–12 mm (see Tetramerotarsata). 

Distribution. Afrotropical Region.

The taxon Rhithrocloeon/fg2 is divided into:

1. Plesiomorphon Bugilliesia

2. Rhihrocloeon/fg3

2.1. Rhithrocloeon/fg4

2.2. Kivuiops

3. Mutelocloeon

4. Adnoptilum  

Some taxa are known as imagoes only and have uncertain systematic position

See also:

Turbanoculata INCERTAE SEDIS