CLADOENDESIS OF EPHEMEROPTERA
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Chankagenesia

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna Bidentiseta Furcatergaliae  
Fimbriatotergaliae Fossoriae Cryptoprosternata Palingenia/f2=g1PentageniaPalingenia/f3=g2 Anagenesia/g1 - Chankagenesia)

Nomen hierarchicum: Chankagenesia/g(1) [g:1935]

In circumscription fits:

— subgen. Chankagenesia: Tshernova 1952: 247

— gen. Chankagenesia Buldovsky 1935a:831; 1935b:152

— Chankagenesia/g(1): Kluge 2004: 255

References. Buldovsky 1935a: ; – 1935b: ; – Tshernova 1952: ; – Demoulin 1952a: ; – 1965b: ; – Tshernova & Kluge & Sinitshenkova & Belov 1986: ; Kluge 2004:

Character of Chankagenesia of unclear phylogenetic status (Table).

(1) In male imago middle and hind legs with one (anterior) claw on each, thus only on fore legs of male two claws are retained [all claws are blunt – see Anagenesia/g1 (2)]. The same in Anagenesia/g2; possibly, synapomorphy.

Plesiomorphies of Chankagenesia (Table). On fore wing MP1 and iMP are not brought together (unlike Cheirogenesia); CuA without furcation (unlike Anagenesia/fg2, Plethogenesia and Cheirogenesia). In larva: on outer margin of mandibular tusk each denticle terminates by a spine-like seta [see Palingenia/f2=g1 (2)] (Kluge 2004: Fig.76:D); outer margin of fore tibia without denticles, with spine-like setae [see Palingenia/f2=g1 (5)].

Size. Fore wing length 10–19 mm, body length 17–27 mm. 

Distribution. Eastern Asia.

Nominal species in Chankagenesia/g(1): 

 natans Buldovsky 1935 [Chankagenesia] ,,

 sibirica McLachlan 1872 [Palingenia] (nomen dubium)

 yangi Hsu 1937 [Anagenesia]

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