Nugonioneura, Tillyard, 1937

Aristov, D. S., 2020, Revision of the genera Heteroptilon, Nugonioneura and Opistocladus from the Lower Permian of USA (Insecta: Cnemidolestida: Tillyardembiidae, Nugonioneuridae and Parmapteridae), Far Eastern Entomologist 401, pp. 1-9 : 6

Nugonioneura problematica Tillyard, 1937

Figs 3, 4

Nugonioneura problematica Tillyard, 1937: 94, fig. 4; Carpenter, 1976: 337, figs 1-3; 1992:

500; Béthoux et al., 2003: 278.

MATERIAL. Holotype MCZ, № 5895, positive imprint of forewing; United

States, Kansas, Dickinson County, Banner Township, 5 km southeast of Elmo town ,

Elmo locality; Lower Permian, Lower Leonardian, Sumner Group, Wellington Formation, Carlton Member; in MCZ.

REDESCRIPTION. Small insects. Anterior margin of forewing is convex. Costal field in wings basal third equal to subcostal one in width. SC curved parallel to wings anterior margin. SC and R with sparse simple or Y-shaped anterior branches.

RS+MA with three branches, MP simple. CuA anteriorly pectinate with three long branches. Intercubital field wide, А 1 simple, А 2 with four branches. Transverse veins simple.

MEASUREMENTS. Forewing length 10 mm.

Figures

Figs 3, 4. Nugonioneura problematica Tillyard, 1937, forewing, holotype MCZ, № 5895.