Triadophlebiomorpha

Diagram of preserved wing portion of Zygophlebiella curta, showing pattern of basal venation. From Nel et al. (2001).

Belongs within: Pandiscoidalia.

The Triadophlebiomorpha are a clade of Permian and Triassic insects of the odonate stem group, known from central Asia and Russia. Many triadophlebiomorphs have petiolate wings similar to those of modern damselflies; however, Xamenophlebia ornata is notable for its relatively broad wings with a strongly undulated hindwing.

Characters (from Nel et al. 2001): Wing with very long petiolus, with veins MP and Cu basally separated, distally fused together with AA, CuA + CuP + AA separate more distally from MP; MP distinctly curved distad of its origin at distal angle of discoidal cell; very long and oblique discoidal vein MAb; CuA without distal posterior branches.

<==Triadophlebiomorpha
    |  i. s.: Piroutetia Meunier 1907 [Piroutetiidae] NB01
    |           `--*P. liasina Meunier 1907 NB01
    |--Triadophlebiida NB01
    |    |--Mitophlebia [Mitophlebiidae] NB01
    |    `--Triadophlebioidea NB01
    |         |--Paurophlebia Pritykina 1981 [Paurophlebiidae] NB01
    |         |    `--P. lepida NB01
    |         `--Triadophlebiidae NB01
    |              |--Triadophlebia Pritykina 1981 NB01
    |              `--Cladophlebia Pritykina 1981 NB01
    |                   `--C. parvula Pritykina 1981 NB01
    `--Zygophlebiida NB01
         |--Xamenophlebioidea NB01
         |    |--Xamenophlebia Pritykina 1981 [Xamenophlebiidae] NB01
         |    |    `--*X. ornata Pritykina 1981 NB01
         |    `--Permophlebia Nel, Bethoux et al. 2001 [Permophlebiidae] NB01
         |         `--*P. uralica Nel, Bethoux et al. 2001 NB01
         `--Zygophlebiidae [Zygophlebioidea] NB01
              |--Zygophlebia Pritykina 1981 NB01
              |    `--*Z. ramosa Pritykina 1981 NB01
              |--Zygophlebiella Pritykina 1981 NB01
              |    `--*Z. curta Pritykina 1981 NB01
              |--Mixophlebia Pritykina 1981 NB01
              |    `--*M. mixta Pritykina 1981 NB01
              `--Cyrtophlebia Pritykina 1981 NB01
                   `--*C. sinuosa Pritykina 1981 NB01

*Type species of generic name indicated

==References==

[NB01] Nel, A., O. Bethoux, G. Bechly, X. Martínez-Delclòs & F. Papier. 2001. The Permo-Triassic Odonatoptera of the “protodonate” grade (Insecta: Odonatoptera). Annales de la Société Entomologique de France (N.S.) 37 (4): 501-525.