CLADOENDESIS OF EPHEMEROPTERA
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Parameletus/fg1

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna pm.Tridentiseta  
Siphlonurus/fg1 - Parameletus/fg1)

Nomen hierarchicum: Parameletus/fg1 [f;1995; g:1908] (incl. Siphlonisca)

In circumscription fits:

— subfam. Parameletinae: Kluge & Studemann & Landolt & Gonser 1995: 111

— Parameletus/fg1: Kluge 2004: 76

References. Kluge & al. 1995: * * *; – Kluge 2004: * * * *.

Autapomorphies of Parameletus/fg1.

(1) In female imago copulatory pouch [see Siphlonurus/fg1 (1)] has a pair of basal lobes projecting posteriorly from copulatory duct; pigmented area of abdominal sternum VIII anteriorly forms an unpaired projection, jutting out between the basal lobes of copulatory pouch (Kluge 2004: Fig.19:A,B,G).

(2) Penis [distally subdivided into two pairs of lobes – see Siphlonurus/fg1 (3)] in its proximal part on ventral side bears a pair of spine-like processes directed distally.

(3) Larval abdominal terga lack denticles on posterior margins [like that of sterna – see Siphlonurus/fg1 (6)]. Non-unique apomorphy.

Size. Fore wing length 10–17 mm.

Distribution. Holarctic.

The taxon Parameletus/fg1 is divided into:

1. Parameletus/fg2

2. Siphlonisca