(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna Bidentiseta Furcatergaliae  
AttenellaTimpanoga/fg2 Eurylophella/g1 - Eurylophella/g2)

Nomen hierarchicum: Eurylophella/fg2 [f:2000; g:1935] (sine Dentatella

In circumscription fits:

subgen. Eurylophella: Edmunds 1959: 546

gen. Eurylophella Tiensuu 1935: 20

gen. Melanameletus Tiensuu 1935: 15

Eurylophella/fg2: Kluge 2004: 302

Synonym: subjective synonym of Eurylophella/fg (typus karelica [E.]) is Melanameletus/g [g:1935] (typus brunnescens [M.]) (subjective synonymy: karelica [E.] = brunnescens [M.])

References. Edmunds 1959: * *; Allen & Edmunds 1963c: * *; Edmunds & Jensen & Berner 1976: * *; McCafferty & Wang 1994a (subgen.): *; Studemann & Landolt 1997a: *; Kluge 2004: * * * *

Autapomorphy of Eurylophella/fg2.

(1) Larval abdominal segment IX is elongate: medially it is approximately 1.4 times longer than segment VIII (Kluge 2004: Fig.91:I). Non-unique apomorphy, the same in many Ephemerella/fg3 and some other Ephemeroptera; in other Timpanoga/fg1 abdominal segment IX is subequal or only slightly longer than segment VIII.

Character of Eurylophella/fg2 of unclear phylogenetic status. 

(2) Egg without polar cap (unlike majority of other Ephemerella/fg1, which have one polar cap), with polygonal relief, without anchors [see Ephemerella/fg1 (14)]. It is unclear if this is an autapomorphy of Eurylophella/g2 or Eurylophella/g1, as egg structure of Dentatella is unknown.

Size. Fore wing length 611 mm.

Distribution. Mainly Nearctic, also in Europe.

Nominal species in Eurylophella/fg2:  

aestiva McDunnough 1931 [Ephemerella]

bicolor Clemens 1913 [Ephemerella]

bicoloroides McDunnough 1938 [Ephemerella]

brunnescens Tiensuu 1935 [Melanameletus] syn.subj. karelica [Eurylophella]

doris Traver 1934 [Ephemerella]

enoensis Funk (in Funk & Sweeney) 1994 [Eurylophella]

funeralis McDunnough 1925 [Ephemerella]

iberica Keffermüller & Da-Terra 1978 [Ephemerella (Eurylophella)]

karelica Tiensuu 1935 [Eurylophella] typus nominis Eurylophella ,,

korneyevi Martynov & Palatov & Godunko 2015 [Eurylophella]

lineata Clemens 1913 [Ephemerella] syn.subj. lutulenta [Ephemerella]

lithuanica Kazlauskas 1959 [Ephemerella (Eurylophella)] syn.subj. karelica [Eurylophella]

lodi Mayo 1952 [Ephemerella]

lutulenta Clemens 1913 [Ephemerella]

macdunnoughi Funk (in Funk & Sweeney) 1994 [Eurylophella]

minimella McDunnough 1931 [Ephemerella]

oviruptis Funk (in Funk & Jackson& Sweeney) 2008 [Eurylophella]

poconoensis Funk (in Funk & Sweeney) 1994 [Eurylophella]

prudentalis McDunnough 1931 [Ephemerella] ,

temporalis McDunnough 1924 [Ephemerella] ,,

trilineata Berner 1945 [Ephemerella] syn.subj. doris [Ephemerella]

verisimilis McDunnough 1930 [Ephemerella]