(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna Bidentiseta Branchitergaliae  
Eusetisura Coloburiscus/fg1 - Coloburiscus/fg2)

Nomen hierarchicum: Coloburiscus/fg2 [f:1963; g:1888] (sine Coloburiscioides, incl. Murphyella)

In circumscription fits:

 Coloburiscus/fg2: Kluge 2004: 128

Reference. Kluge 2004: * * * *. 

Autapomorphies of Coloburiscus/fg2.

(1) In imago and subimago posterior end of lateroparapsidal suture is strongly curved laterally; in subimago lateral pigmented area of mesonotum occupies most part of sublateroscutum and is bordered from behind by the curvation of lateroparapsidal suture (Kluge 2004: Fig.39:C-D).

(2) Swimming setae of larval caudalii are lost. Paracercus is shortened, less than a half of cerci length (in Coloburiscus/fg3) or vestigial (in Murphyella). Non-unique apomorphies (see Index of characters [1.3.64] and [1.3.66]).

Plesiomorphies of Coloburiscus/fg2. Unlike Coloburiscoides, on hind wing fork of MP is more proximal than fork of MA. 

Size. Fore wing length 1216 mm. 

Distribution. New Zealand and South America. 

The taxon Coloburiscus/fg2 is divided into:

1. plesiomorphon Coloburiscus/fg3

2. Murphyella