CLADOENDESIS OF EPHEMEROPTERA
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Eopolymitarcys

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna Bidentiseta Furcatergaliae  
Fimbriatotergaliae Fossoriae Cryptoprosternata Polymitarcys/f1=Ephoron/g2Campsurus/fg1Polymitarcys/f2=Ephoron/g3 - Eopolymitarcys)

Nomen hierarchicum: Eopolymitarcys/g(1) [g:1934]

In circumscription fits:

— gen. Eopolymitarcys Tshernova 1934: 240

— Eopolymitarcys/g1: Kluge 2004: 259

References. Tshernova 1934: ; – Tshernova & Kluge & Sinitshenkova & Belov 1986 (Ephoron nigridorsum): ; – Kluge 1997 (E. nigridorsum): ; – Kluge 2004: * * * *

Characters of Eopolymitarcys of unclear phylogenetic status. 

(1) In cubital field of fore wing [see Polymitarcys/f1=Ephoron/g2 (5)] usually only one concave intercalary is present; it goes parallel to CuA toward tornoapical margin; sigmoid veins arise from this intercalary and directly from CuA (Kluge 2004: Fig.78:A). In selected specimens there are two or none intercalaries (in the last case all sigmoid veins arise from CuA). Non-unique character (see Index of characters [2.2.51] and [2.2.52]).

(2) Egg has 2 polar caps [see Polymitarcys/f2=Ephoron/g3 (5)].

Size. Fore wing length 10–14 mm. 

Distribution. Palaearctic.

Nominal species in Eopolymitarcys/g(1): 1 species

 ladogensis Tiensuu 1935 [Polymitarcys] — syn.subj. nigridorsum [Eopolymitarcys]

 nigridorsum Tshernova 1934 [Eopolymitarcys] --,-/

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