CLADOENDESIS OF EPHEMEROPTERA
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Procloeon/g1

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna pm.Tridentiseta  
Tetramerotarsata Liberevenata Turbanoculata
 Anteropatellata Cloeon/fg1 -Procloeon/g1)

Nomen hierarchicum: Procloeon/g1 [g:1915] (incl. Oculogaster, Pseudocentroptiloides)

In circumscription fits:

— branch “11”: Kluge & Novikova 1992: Fig. 11

— gen. Procloeon: Kluge 2016: 494

— Procloeon/g1: Kluge 2012:361-376: 362

References.  Kluge & Novikova 1992: * *; – Kluge 2016:491-516: *

Autapomorphy of Procloeon/g1.

(1) In larva, at distal part of cerci, each cercomere bears on its outer (lateral) side one large spine directed posteriorly; usually this spine is spindle-like thickened and its length exceeds length of cercomere (Kluge & al. 2014: Fig.1-3; Kluge 2016: Fig.21-22, 59-60). A unique apomorphy: in some other taxa spines of posterior margins of cercomeres are also enlarged on outer side, but in this case outer side of cercomere bears more than one spine, and these spines are not so long and thickened.

Cerci and paracercus often without long bare last segments (the same in Pseudocentroptilum; possibly, synapomorphy) in some species area of cercus with large spines on outer side is followed by additional terminal part consisted on slender bare cercomeres.

Size. Fore wing length 4–8 mm (see Tetramerotarsata).

Distribution. Arctogea (Holarctic, Oriental and Afrotropical Regions).

The taxon Procloeon/g1 is divided into:

1. plesiomorphon Procloeon/g2

2. Oculogaster

3. Pseudocentroptiloides/g1

3.1. plesiomorphon Pseudocentroptiloides/g2

3.2. Psammonella/g(1)

4. Securiops/g(1)

5. Monilistylus