Mesoscytina Tillyard 1919

Mesoscytina Tillyard, 1919

Mesoscytina Tillyard, 1919: 871.

Triassoscarta Tillyard, 1919: 874. Syn. nov.

Type species. Mesoscytina australis Tillyard, 1919, by original designation.

Diagnostic characters. Tegmen approximately 6–11 mm long and no more than 3 times longer than wide, distinctly punctate basally, less so apically; apical venation indistinct; costal fracture well developed; R curved basally, then more or less straight; M with 3 apical branches.

Notes. The type species of Mesoscytina and Triassoscarta are synonyms. As both generic names were established in the same paper, as first reviser (ICZN Article 24), I have chosen Mesoscytina as the senior synonym on the grounds that its type specimen is better preserved. The type specimen of Triassoscarta subcostalis Tillyard, the type species of Triassoscarta, has poorly preserved apical venation (see photograph at page 37 of Jell 2004), but otherwise exactly matches M. australis. This match plus the fact that it is also from Denmark Hill are considered as sufficient grounds for the synonymy.