CLADOENDESIS OF EPHEMEROPTERA
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Siphlurella

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna pm.Tridentiseta  
Siphlonurus/fg1Parameletus/fg1Siphlonurus/fg2EdmundsiusSiphlonurus/fg3 - Siphlurella)

Nomen hierarchicum: Siphlurella/g(1) [g:1909]

In circumscription fits:

— subgen. Siphlurella: Jacob 1974a: 2

— gen. Siphlurella: Bengtsson 1909: 11

— Siphlurella/g1: Kluge 2004: 76

References. Bengtsson 1909: ; - 1930: ; - Kluge 2004: * * * *.

Autapomorphy of Siphlurella.

(1) Tergalii III–VII with additional dorsal (anterior) lamella, which represents an expansion of anal-proximal area bent dorsally [tergalii I and II with additional ventral (posterior) lamella – see Siphlonurus/fg2 (1) and Siphlonurus/fg3 (1)]; thus all tergalii are double, but tergalii I–II and III–VII have basically different structure.

Size. Fore wing length 12–14 mm.

Distribution. Holarctic.

Nominal species in Siphlurella/g(1): 

alternata Say 1824 [Baetis] --/

annulata Walker 1853 [Baetis] — syn.subj. alternata [Baetis]

linnaeanus Eaton 1871 [Siphlurus] — syn.subj. alternata [Baetis]

oblita Bengtsson 1909 [Siphlurella] — syn.subj. alternata [Baetis]

phyllis McDunnough 1923 [Siphlonurus]

thomsoni Bengtsson 1909 [Siphlurella] — typus nominis Siphlurella — syn.subj. alternata [Baetis]

See also:  

Siphlonurus/fg1 incertae sedis

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